./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-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 34ebd55fb329f5d1f91a7448416ebb87d44ad143bdc373b65c05d35b2199abdd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:32:03,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:32:03,607 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:32:03,613 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:32:03,614 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:32:03,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:32:03,645 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:32:03,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:32:03,646 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:32:03,647 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:32:03,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:32:03,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:32:03,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:32:03,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:32:03,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:32:03,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:32:03,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:32:03,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:32:03,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:32:03,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:32:03,652 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:32:03,654 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:32:03,654 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:32:03,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:32:03,654 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:32:03,655 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:32:03,655 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:32:03,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:32:03,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:32:03,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:32:03,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:32:03,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:32:03,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:32:03,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:32:03,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:32:03,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:32:03,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:32:03,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:32:03,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:32:03,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:32:03,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:32:03,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:32:03,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34ebd55fb329f5d1f91a7448416ebb87d44ad143bdc373b65c05d35b2199abdd [2024-11-19 06:32:03,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:32:03,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:32:03,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:32:03,959 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:32:03,959 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:32:03,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i [2024-11-19 06:32:05,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:32:05,685 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:32:05,687 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca-1.i [2024-11-19 06:32:05,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0153b2ea4/002a6c0a930742a5a98178abaff72e7a/FLAGcd8d08f10 [2024-11-19 06:32:05,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0153b2ea4/002a6c0a930742a5a98178abaff72e7a [2024-11-19 06:32:05,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:32:05,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:32:05,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:32:05,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:32:05,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:32:05,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:32:05" (1/1) ... [2024-11-19 06:32:05,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539110cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:05, skipping insertion in model container [2024-11-19 06:32:05,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:32:05" (1/1) ... [2024-11-19 06:32:05,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:32:06,079 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:32:06,080 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:32:06,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:32:06,101 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:32:06,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:32:06,196 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:32:06,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06 WrapperNode [2024-11-19 06:32:06,197 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:32:06,199 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:32:06,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:32:06,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:32:06,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,221 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,250 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2024-11-19 06:32:06,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:32:06,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:32:06,252 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:32:06,252 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:32:06,266 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,295 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [4, 5]. 56 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2024-11-19 06:32:06,296 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,296 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:32:06,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:32:06,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:32:06,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:32:06,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (1/1) ... [2024-11-19 06:32:06,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:32:06,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:06,349 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) [2024-11-19 06:32:06,353 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 [2024-11-19 06:32:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:32:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:32:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:32:06,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:32:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 06:32:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:32:06,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:32:06,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:32:06,564 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:32:06,567 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:32:06,793 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2024-11-19 06:32:06,793 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:32:06,808 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:32:06,808 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 06:32:06,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:32:06 BoogieIcfgContainer [2024-11-19 06:32:06,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:32:06,810 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:32:06,811 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:32:06,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:32:06,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:32:05" (1/3) ... [2024-11-19 06:32:06,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f6f8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:32:06, skipping insertion in model container [2024-11-19 06:32:06,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:32:06" (2/3) ... [2024-11-19 06:32:06,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f6f8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:32:06, skipping insertion in model container [2024-11-19 06:32:06,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:32:06" (3/3) ... [2024-11-19 06:32:06,818 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcmp-alloca-1.i [2024-11-19 06:32:06,833 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:32:06,833 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2024-11-19 06:32:06,871 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:32:06,876 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;@72829773, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:32:06,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-19 06:32:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 31 states have (on average 1.903225806451613) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:32:06,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:06,884 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:06,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:06,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:06,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2024-11-19 06:32:06,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:06,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959194630] [2024-11-19 06:32:06,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:06,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:07,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959194630] [2024-11-19 06:32:07,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959194630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:07,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:07,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:07,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421316621] [2024-11-19 06:32:07,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:07,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:07,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:07,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:07,290 INFO L87 Difference]: Start difference. First operand has 51 states, 31 states have (on average 1.903225806451613) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:07,341 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-19 06:32:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:07,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-19 06:32:07,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:07,351 INFO L225 Difference]: With dead ends: 64 [2024-11-19 06:32:07,351 INFO L226 Difference]: Without dead ends: 62 [2024-11-19 06:32:07,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:07,356 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:07,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 142 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:07,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-19 06:32:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2024-11-19 06:32:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 51 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2024-11-19 06:32:07,387 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 7 [2024-11-19 06:32:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:07,387 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2024-11-19 06:32:07,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2024-11-19 06:32:07,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:32:07,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:07,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:07,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:32:07,389 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:07,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876138, now seen corresponding path program 1 times [2024-11-19 06:32:07,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:07,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901414613] [2024-11-19 06:32:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:07,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:07,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901414613] [2024-11-19 06:32:07,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901414613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:07,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:07,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:32:07,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240922533] [2024-11-19 06:32:07,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:07,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:32:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:07,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:32:07,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:32:07,593 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:07,631 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-11-19 06:32:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:32:07,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-19 06:32:07,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:07,633 INFO L225 Difference]: With dead ends: 50 [2024-11-19 06:32:07,633 INFO L226 Difference]: Without dead ends: 50 [2024-11-19 06:32:07,633 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 [2024-11-19 06:32:07,634 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 17 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:07,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 59 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-19 06:32:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-19 06:32:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.696969696969697) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:07,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-11-19 06:32:07,640 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 7 [2024-11-19 06:32:07,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:07,640 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-11-19 06:32:07,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:07,641 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-11-19 06:32:07,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:32:07,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:07,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:07,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:32:07,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:07,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:07,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2024-11-19 06:32:07,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:07,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967774356] [2024-11-19 06:32:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:07,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:07,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967774356] [2024-11-19 06:32:07,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967774356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:07,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:07,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:07,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749324614] [2024-11-19 06:32:07,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:07,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:07,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:07,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:07,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:07,945 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:08,057 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-19 06:32:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-19 06:32:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:08,060 INFO L225 Difference]: With dead ends: 54 [2024-11-19 06:32:08,060 INFO L226 Difference]: Without dead ends: 54 [2024-11-19 06:32:08,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:08,061 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:08,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 122 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:08,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-19 06:32:08,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2024-11-19 06:32:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2024-11-19 06:32:08,069 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 7 [2024-11-19 06:32:08,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:08,069 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2024-11-19 06:32:08,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2024-11-19 06:32:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:32:08,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:08,070 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:08,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:32:08,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:08,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash -533876908, now seen corresponding path program 1 times [2024-11-19 06:32:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:08,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42176224] [2024-11-19 06:32:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:08,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42176224] [2024-11-19 06:32:08,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42176224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:08,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:08,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348450069] [2024-11-19 06:32:08,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:08,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:08,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:08,116 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:08,136 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-11-19 06:32:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:08,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 06:32:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:08,137 INFO L225 Difference]: With dead ends: 69 [2024-11-19 06:32:08,137 INFO L226 Difference]: Without dead ends: 69 [2024-11-19 06:32:08,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:08,139 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:08,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:08,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-19 06:32:08,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-19 06:32:08,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 62 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) [2024-11-19 06:32:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-19 06:32:08,147 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 9 [2024-11-19 06:32:08,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:08,148 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-19 06:32:08,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,148 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-19 06:32:08,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:32:08,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:08,149 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:08,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:32:08,149 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:08,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:08,150 INFO L85 PathProgramCache]: Analyzing trace with hash -476618606, now seen corresponding path program 1 times [2024-11-19 06:32:08,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:08,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772948129] [2024-11-19 06:32:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:08,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:08,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772948129] [2024-11-19 06:32:08,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772948129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:08,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:08,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:32:08,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222501297] [2024-11-19 06:32:08,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:08,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:32:08,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:08,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:32:08,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:32:08,202 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:08,235 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2024-11-19 06:32:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:32:08,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 06:32:08,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:08,236 INFO L225 Difference]: With dead ends: 61 [2024-11-19 06:32:08,236 INFO L226 Difference]: Without dead ends: 61 [2024-11-19 06:32:08,237 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 [2024-11-19 06:32:08,239 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 13 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:08,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 59 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-19 06:32:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-19 06:32:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.5434782608695652) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-19 06:32:08,251 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 9 [2024-11-19 06:32:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:08,251 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-19 06:32:08,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-19 06:32:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:32:08,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:08,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:08,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:32:08,252 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:08,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash -476618605, now seen corresponding path program 1 times [2024-11-19 06:32:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129970317] [2024-11-19 06:32:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:08,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:08,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129970317] [2024-11-19 06:32:08,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129970317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:08,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:08,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:32:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948321852] [2024-11-19 06:32:08,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:08,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:32:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:08,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:32:08,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:08,463 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:08,559 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-19 06:32:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:08,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 06:32:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:08,562 INFO L225 Difference]: With dead ends: 65 [2024-11-19 06:32:08,562 INFO L226 Difference]: Without dead ends: 65 [2024-11-19 06:32:08,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:08,563 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 25 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:08,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 106 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-19 06:32:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-11-19 06:32:08,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 48 states have (on average 1.5416666666666667) internal successors, (74), 62 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-19 06:32:08,575 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 9 [2024-11-19 06:32:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:08,576 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-19 06:32:08,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,576 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-19 06:32:08,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:32:08,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:08,576 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:08,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:32:08,577 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:08,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:08,577 INFO L85 PathProgramCache]: Analyzing trace with hash 629683416, now seen corresponding path program 1 times [2024-11-19 06:32:08,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:08,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320919024] [2024-11-19 06:32:08,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:08,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:08,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:08,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:08,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320919024] [2024-11-19 06:32:08,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320919024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:08,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:08,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:08,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158084633] [2024-11-19 06:32:08,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:08,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:08,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:08,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:08,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:08,707 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:08,763 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2024-11-19 06:32:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:08,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-19 06:32:08,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:08,764 INFO L225 Difference]: With dead ends: 75 [2024-11-19 06:32:08,764 INFO L226 Difference]: Without dead ends: 75 [2024-11-19 06:32:08,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:08,766 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:08,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 112 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:08,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-19 06:32:08,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-19 06:32:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 73 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2024-11-19 06:32:08,776 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 10 [2024-11-19 06:32:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:08,777 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2024-11-19 06:32:08,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:08,777 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2024-11-19 06:32:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:32:08,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:08,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:08,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:32:08,778 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:08,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:08,778 INFO L85 PathProgramCache]: Analyzing trace with hash -179663210, now seen corresponding path program 1 times [2024-11-19 06:32:08,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:08,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299965354] [2024-11-19 06:32:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:08,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:08,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:08,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299965354] [2024-11-19 06:32:08,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299965354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:08,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:08,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045081667] [2024-11-19 06:32:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:08,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:08,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:08,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:08,985 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:09,056 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2024-11-19 06:32:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:09,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-19 06:32:09,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:09,057 INFO L225 Difference]: With dead ends: 90 [2024-11-19 06:32:09,057 INFO L226 Difference]: Without dead ends: 90 [2024-11-19 06:32:09,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:09,058 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 27 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:09,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 101 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:09,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-19 06:32:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 74. [2024-11-19 06:32:09,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 73 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2024-11-19 06:32:09,069 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 10 [2024-11-19 06:32:09,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:09,070 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2024-11-19 06:32:09,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2024-11-19 06:32:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:09,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:09,071 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:09,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:32:09,071 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:09,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1954650589, now seen corresponding path program 1 times [2024-11-19 06:32:09,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:09,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828531712] [2024-11-19 06:32:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:09,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828531712] [2024-11-19 06:32:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828531712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:09,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:09,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:09,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323591806] [2024-11-19 06:32:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:09,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:09,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:09,263 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:09,316 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2024-11-19 06:32:09,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:09,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-19 06:32:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:09,318 INFO L225 Difference]: With dead ends: 81 [2024-11-19 06:32:09,318 INFO L226 Difference]: Without dead ends: 81 [2024-11-19 06:32:09,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:09,319 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:09,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 110 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-19 06:32:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2024-11-19 06:32:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.46875) internal successors, (94), 78 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2024-11-19 06:32:09,325 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 11 [2024-11-19 06:32:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:09,325 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2024-11-19 06:32:09,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2024-11-19 06:32:09,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:09,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:09,326 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:09,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:32:09,326 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:09,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:09,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1530970081, now seen corresponding path program 1 times [2024-11-19 06:32:09,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:09,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914369046] [2024-11-19 06:32:09,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:09,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:09,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:09,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914369046] [2024-11-19 06:32:09,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914369046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:09,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:09,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:09,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141700814] [2024-11-19 06:32:09,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:09,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:09,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:09,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:09,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:09,451 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:09,477 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2024-11-19 06:32:09,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:09,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-19 06:32:09,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:09,478 INFO L225 Difference]: With dead ends: 78 [2024-11-19 06:32:09,478 INFO L226 Difference]: Without dead ends: 78 [2024-11-19 06:32:09,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:09,479 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:09,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 91 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-19 06:32:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2024-11-19 06:32:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 72 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2024-11-19 06:32:09,490 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 11 [2024-11-19 06:32:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:09,490 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2024-11-19 06:32:09,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2024-11-19 06:32:09,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 06:32:09,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:09,492 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:09,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:32:09,492 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:09,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2024-11-19 06:32:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:09,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796464659] [2024-11-19 06:32:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:09,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796464659] [2024-11-19 06:32:09,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796464659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:09,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022221103] [2024-11-19 06:32:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:09,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:09,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:09,706 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) [2024-11-19 06:32:09,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:32:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:09,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 06:32:09,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:09,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:32:09,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-19 06:32:09,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-19 06:32:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:10,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:10,246 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:32:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022221103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:10,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:10,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-19 06:32:10,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242248442] [2024-11-19 06:32:10,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:10,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 06:32:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:10,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 06:32:10,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:32:10,264 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:10,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:10,494 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2024-11-19 06:32:10,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:10,494 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 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 11 [2024-11-19 06:32:10,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:10,495 INFO L225 Difference]: With dead ends: 78 [2024-11-19 06:32:10,495 INFO L226 Difference]: Without dead ends: 78 [2024-11-19 06:32:10,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-19 06:32:10,496 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:10,496 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 209 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-19 06:32:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 70. [2024-11-19 06:32:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.456140350877193) internal successors, (83), 69 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2024-11-19 06:32:10,503 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 11 [2024-11-19 06:32:10,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:10,503 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2024-11-19 06:32:10,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:10,504 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2024-11-19 06:32:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:32:10,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:10,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:10,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 06:32:10,705 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,SelfDestructingSolverStorable10 [2024-11-19 06:32:10,706 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:10,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1518507737, now seen corresponding path program 1 times [2024-11-19 06:32:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276432809] [2024-11-19 06:32:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:10,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:10,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276432809] [2024-11-19 06:32:10,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276432809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:10,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:10,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:10,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213347717] [2024-11-19 06:32:10,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:10,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:10,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:10,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:10,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:10,749 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:10,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:10,794 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2024-11-19 06:32:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:10,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:32:10,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:10,795 INFO L225 Difference]: With dead ends: 69 [2024-11-19 06:32:10,795 INFO L226 Difference]: Without dead ends: 69 [2024-11-19 06:32:10,795 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 [2024-11-19 06:32:10,796 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:10,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 61 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-19 06:32:10,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2024-11-19 06:32:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 67 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2024-11-19 06:32:10,799 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 13 [2024-11-19 06:32:10,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:10,800 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2024-11-19 06:32:10,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:10,800 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2024-11-19 06:32:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:32:10,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:10,800 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:10,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:32:10,801 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:10,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:10,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1518507736, now seen corresponding path program 1 times [2024-11-19 06:32:10,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:10,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306134261] [2024-11-19 06:32:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:10,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:10,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:10,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306134261] [2024-11-19 06:32:10,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306134261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:10,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:10,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:32:10,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952375630] [2024-11-19 06:32:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:10,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:32:10,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:32:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:10,930 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:10,997 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2024-11-19 06:32:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:32:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:32:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:10,998 INFO L225 Difference]: With dead ends: 78 [2024-11-19 06:32:10,998 INFO L226 Difference]: Without dead ends: 78 [2024-11-19 06:32:10,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:10,999 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 37 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:10,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 111 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:11,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-19 06:32:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2024-11-19 06:32:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.435483870967742) internal successors, (89), 72 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2024-11-19 06:32:11,002 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 13 [2024-11-19 06:32:11,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:11,002 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2024-11-19 06:32:11,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:11,002 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2024-11-19 06:32:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:32:11,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:11,003 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:11,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 06:32:11,003 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:11,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1862804906, now seen corresponding path program 1 times [2024-11-19 06:32:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:11,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210183242] [2024-11-19 06:32:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:11,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:11,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:11,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210183242] [2024-11-19 06:32:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210183242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970267298] [2024-11-19 06:32:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:11,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:11,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:11,203 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) [2024-11-19 06:32:11,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:32:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:11,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 06:32:11,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:11,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-19 06:32:11,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 06:32:11,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:11,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:11,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970267298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:11,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:11,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-19 06:32:11,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930386342] [2024-11-19 06:32:11,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:11,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:32:11,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:11,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:32:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:32:11,669 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:11,875 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2024-11-19 06:32:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:32:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:32:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:11,877 INFO L225 Difference]: With dead ends: 78 [2024-11-19 06:32:11,877 INFO L226 Difference]: Without dead ends: 78 [2024-11-19 06:32:11,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:32:11,878 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 39 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:11,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 182 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:11,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-19 06:32:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2024-11-19 06:32:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 58 states have (on average 1.396551724137931) internal successors, (81), 67 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2024-11-19 06:32:11,890 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 13 [2024-11-19 06:32:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:11,890 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2024-11-19 06:32:11,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2024-11-19 06:32:11,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 06:32:11,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:11,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:11,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 06:32:12,091 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,SelfDestructingSolverStorable13 [2024-11-19 06:32:12,094 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:12,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:12,095 INFO L85 PathProgramCache]: Analyzing trace with hash -115553677, now seen corresponding path program 1 times [2024-11-19 06:32:12,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:12,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584691228] [2024-11-19 06:32:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:12,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:12,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584691228] [2024-11-19 06:32:12,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584691228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:12,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:12,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:32:12,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105259113] [2024-11-19 06:32:12,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:12,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:32:12,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:12,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:32:12,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:12,295 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:12,335 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-19 06:32:12,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:12,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 06:32:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:12,336 INFO L225 Difference]: With dead ends: 67 [2024-11-19 06:32:12,336 INFO L226 Difference]: Without dead ends: 67 [2024-11-19 06:32:12,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:12,337 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:12,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:12,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-19 06:32:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2024-11-19 06:32:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-19 06:32:12,340 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 14 [2024-11-19 06:32:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:12,340 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-19 06:32:12,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-19 06:32:12,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 06:32:12,341 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:12,341 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:12,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 06:32:12,341 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:12,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1002946536, now seen corresponding path program 1 times [2024-11-19 06:32:12,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:12,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685333421] [2024-11-19 06:32:12,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:12,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:12,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685333421] [2024-11-19 06:32:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685333421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:12,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:12,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:12,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119063139] [2024-11-19 06:32:12,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:12,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:12,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:12,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:12,425 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:12,479 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-11-19 06:32:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:12,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-19 06:32:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:12,480 INFO L225 Difference]: With dead ends: 56 [2024-11-19 06:32:12,480 INFO L226 Difference]: Without dead ends: 56 [2024-11-19 06:32:12,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:12,481 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:12,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 79 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-19 06:32:12,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2024-11-19 06:32:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-11-19 06:32:12,483 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 15 [2024-11-19 06:32:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:12,483 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-11-19 06:32:12,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,483 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-11-19 06:32:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-19 06:32:12,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:12,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:12,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 06:32:12,484 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:12,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1002946537, now seen corresponding path program 1 times [2024-11-19 06:32:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:12,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701606926] [2024-11-19 06:32:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:12,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701606926] [2024-11-19 06:32:12,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701606926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:12,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:12,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:32:12,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834988938] [2024-11-19 06:32:12,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:12,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:32:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:12,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:32:12,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:12,646 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:12,720 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2024-11-19 06:32:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:12,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-19 06:32:12,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:12,721 INFO L225 Difference]: With dead ends: 60 [2024-11-19 06:32:12,721 INFO L226 Difference]: Without dead ends: 60 [2024-11-19 06:32:12,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:12,722 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:12,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 122 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:12,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-19 06:32:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2024-11-19 06:32:12,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-11-19 06:32:12,724 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 15 [2024-11-19 06:32:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:12,724 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-11-19 06:32:12,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-11-19 06:32:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 06:32:12,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:12,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:12,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 06:32:12,726 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:12,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:12,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1758948201, now seen corresponding path program 1 times [2024-11-19 06:32:12,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:12,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249908578] [2024-11-19 06:32:12,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:12,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:12,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:12,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249908578] [2024-11-19 06:32:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249908578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:12,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:12,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:12,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228913757] [2024-11-19 06:32:12,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:12,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:12,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:12,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:12,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:12,778 INFO L87 Difference]: Start difference. First operand 55 states and 63 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) [2024-11-19 06:32:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:12,817 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-19 06:32:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:12,817 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 [2024-11-19 06:32:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:12,818 INFO L225 Difference]: With dead ends: 55 [2024-11-19 06:32:12,818 INFO L226 Difference]: Without dead ends: 55 [2024-11-19 06:32:12,818 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 [2024-11-19 06:32:12,819 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:12,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 71 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-19 06:32:12,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-19 06:32:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-19 06:32:12,820 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 17 [2024-11-19 06:32:12,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:12,821 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-19 06:32:12,821 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) [2024-11-19 06:32:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-19 06:32:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-19 06:32:12,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:12,822 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:12,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 06:32:12,823 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:12,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1758948202, now seen corresponding path program 1 times [2024-11-19 06:32:12,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:12,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148995176] [2024-11-19 06:32:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:12,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:12,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148995176] [2024-11-19 06:32:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148995176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:12,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:12,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:32:12,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282938020] [2024-11-19 06:32:12,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:12,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:32:12,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:12,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:32:12,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:32:12,953 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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) [2024-11-19 06:32:13,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:13,030 INFO L93 Difference]: Finished difference Result 68 states and 79 transitions. [2024-11-19 06:32:13,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:13,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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 [2024-11-19 06:32:13,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:13,031 INFO L225 Difference]: With dead ends: 68 [2024-11-19 06:32:13,032 INFO L226 Difference]: Without dead ends: 68 [2024-11-19 06:32:13,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:13,032 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 29 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:13,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 128 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-19 06:32:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2024-11-19 06:32:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 48 states have (on average 1.3125) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2024-11-19 06:32:13,035 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 17 [2024-11-19 06:32:13,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:13,035 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2024-11-19 06:32:13,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 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) [2024-11-19 06:32:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2024-11-19 06:32:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:32:13,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:13,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:13,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 06:32:13,036 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:13,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1867940585, now seen corresponding path program 1 times [2024-11-19 06:32:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:13,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264006853] [2024-11-19 06:32:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:13,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:13,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:13,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:13,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264006853] [2024-11-19 06:32:13,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264006853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:13,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:13,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:13,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835339880] [2024-11-19 06:32:13,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:13,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:13,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:13,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:13,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:13,114 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2024-11-19 06:32:13,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:13,170 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2024-11-19 06:32:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:32:13,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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 [2024-11-19 06:32:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:13,171 INFO L225 Difference]: With dead ends: 55 [2024-11-19 06:32:13,171 INFO L226 Difference]: Without dead ends: 55 [2024-11-19 06:32:13,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:32:13,172 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:13,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:13,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-19 06:32:13,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-19 06:32:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:13,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-11-19 06:32:13,178 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 19 [2024-11-19 06:32:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:13,178 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-11-19 06:32:13,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2024-11-19 06:32:13,179 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-11-19 06:32:13,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:32:13,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:13,179 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:13,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 06:32:13,180 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:13,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1867940584, now seen corresponding path program 1 times [2024-11-19 06:32:13,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:13,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070133191] [2024-11-19 06:32:13,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:13,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:13,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:13,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070133191] [2024-11-19 06:32:13,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070133191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:13,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:13,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:32:13,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726147314] [2024-11-19 06:32:13,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:13,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:32:13,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:13,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:32:13,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:32:13,428 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 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) [2024-11-19 06:32:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:13,558 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2024-11-19 06:32:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:32:13,559 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 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 [2024-11-19 06:32:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:13,560 INFO L225 Difference]: With dead ends: 66 [2024-11-19 06:32:13,560 INFO L226 Difference]: Without dead ends: 66 [2024-11-19 06:32:13,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:32:13,561 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:13,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 132 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-19 06:32:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2024-11-19 06:32:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.28) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:13,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-19 06:32:13,563 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 19 [2024-11-19 06:32:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:13,563 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-19 06:32:13,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 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) [2024-11-19 06:32:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-19 06:32:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:32:13,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:13,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:13,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 06:32:13,564 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:13,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1867891817, now seen corresponding path program 1 times [2024-11-19 06:32:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:13,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392158100] [2024-11-19 06:32:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:13,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:13,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:13,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392158100] [2024-11-19 06:32:13,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392158100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:13,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:13,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:32:13,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656451587] [2024-11-19 06:32:13,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:13,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:32:13,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:13,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:32:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:13,730 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:13,794 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2024-11-19 06:32:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:32:13,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-19 06:32:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:13,795 INFO L225 Difference]: With dead ends: 74 [2024-11-19 06:32:13,795 INFO L226 Difference]: Without dead ends: 74 [2024-11-19 06:32:13,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:32:13,796 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:13,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 203 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:13,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-19 06:32:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-19 06:32:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2024-11-19 06:32:13,798 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 19 [2024-11-19 06:32:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:13,798 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2024-11-19 06:32:13,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2024-11-19 06:32:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 06:32:13,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:13,799 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:13,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 06:32:13,801 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:13,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash 838727577, now seen corresponding path program 1 times [2024-11-19 06:32:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:13,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311254537] [2024-11-19 06:32:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:13,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:14,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:14,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311254537] [2024-11-19 06:32:14,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311254537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:14,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:14,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 06:32:14,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738326147] [2024-11-19 06:32:14,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:14,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:32:14,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:14,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:32:14,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:32:14,005 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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) [2024-11-19 06:32:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:14,076 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2024-11-19 06:32:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:32:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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 [2024-11-19 06:32:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:14,077 INFO L225 Difference]: With dead ends: 99 [2024-11-19 06:32:14,077 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 06:32:14,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:32:14,078 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:14,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 203 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 06:32:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 75. [2024-11-19 06:32:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 74 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2024-11-19 06:32:14,080 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 19 [2024-11-19 06:32:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:14,080 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2024-11-19 06:32:14,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 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) [2024-11-19 06:32:14,081 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2024-11-19 06:32:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 06:32:14,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:14,081 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] [2024-11-19 06:32:14,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 06:32:14,082 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:14,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:14,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2070072374, now seen corresponding path program 1 times [2024-11-19 06:32:14,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:14,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220777970] [2024-11-19 06:32:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:14,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:14,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:14,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220777970] [2024-11-19 06:32:14,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220777970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:14,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:14,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:32:14,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354313383] [2024-11-19 06:32:14,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:14,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:32:14,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:14,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:32:14,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:14,187 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:14,212 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2024-11-19 06:32:14,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:32:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-19 06:32:14,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:14,213 INFO L225 Difference]: With dead ends: 74 [2024-11-19 06:32:14,213 INFO L226 Difference]: Without dead ends: 46 [2024-11-19 06:32:14,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:32:14,214 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:14,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 56 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-19 06:32:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-19 06:32:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-19 06:32:14,216 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 20 [2024-11-19 06:32:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:14,216 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-19 06:32:14,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-19 06:32:14,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-19 06:32:14,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:14,216 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] [2024-11-19 06:32:14,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 06:32:14,217 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:14,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:14,217 INFO L85 PathProgramCache]: Analyzing trace with hash 719635548, now seen corresponding path program 1 times [2024-11-19 06:32:14,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:14,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668978511] [2024-11-19 06:32:14,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:14,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:14,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668978511] [2024-11-19 06:32:14,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668978511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142401242] [2024-11-19 06:32:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:14,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:14,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:14,377 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) [2024-11-19 06:32:14,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:32:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:14,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 06:32:14,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:14,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:14,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142401242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:14,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:14,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-19 06:32:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095797764] [2024-11-19 06:32:14,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:14,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:32:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:32:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:32:14,746 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:14,889 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2024-11-19 06:32:14,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:32:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-19 06:32:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:14,890 INFO L225 Difference]: With dead ends: 58 [2024-11-19 06:32:14,890 INFO L226 Difference]: Without dead ends: 58 [2024-11-19 06:32:14,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:32:14,892 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:14,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 161 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-19 06:32:14,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2024-11-19 06:32:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.186046511627907) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-19 06:32:14,897 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 23 [2024-11-19 06:32:14,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:14,897 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-19 06:32:14,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-19 06:32:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 06:32:14,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:14,898 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:14,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 06:32:15,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:15,099 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:15,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash 80027165, now seen corresponding path program 1 times [2024-11-19 06:32:15,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:15,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033025106] [2024-11-19 06:32:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:15,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:15,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:15,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033025106] [2024-11-19 06:32:15,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033025106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:15,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:15,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 06:32:15,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255429007] [2024-11-19 06:32:15,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:15,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:32:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:15,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:32:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:32:15,381 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:15,462 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2024-11-19 06:32:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:32:15,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-19 06:32:15,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:15,463 INFO L225 Difference]: With dead ends: 57 [2024-11-19 06:32:15,463 INFO L226 Difference]: Without dead ends: 39 [2024-11-19 06:32:15,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:32:15,464 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:15,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:15,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-19 06:32:15,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-19 06:32:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-19 06:32:15,466 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 25 [2024-11-19 06:32:15,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:15,466 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-19 06:32:15,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:15,467 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-19 06:32:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 06:32:15,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:15,467 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:15,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 06:32:15,468 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:15,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash 298881883, now seen corresponding path program 1 times [2024-11-19 06:32:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:15,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233336572] [2024-11-19 06:32:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:15,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:16,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233336572] [2024-11-19 06:32:16,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233336572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:16,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230233735] [2024-11-19 06:32:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:16,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:16,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:16,031 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) [2024-11-19 06:32:16,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:32:16,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:16,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-19 06:32:16,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:16,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 06:32:16,282 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 [2024-11-19 06:32:16,338 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 [2024-11-19 06:32:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:16,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:16,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 06:32:16,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2024-11-19 06:32:17,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 06:32:17,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2024-11-19 06:32:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:17,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230233735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:17,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:17,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 15] total 37 [2024-11-19 06:32:17,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603290493] [2024-11-19 06:32:17,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:17,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-19 06:32:17,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:17,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-19 06:32:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 06:32:17,179 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:17,868 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2024-11-19 06:32:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 06:32:17,868 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-19 06:32:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:17,869 INFO L225 Difference]: With dead ends: 58 [2024-11-19 06:32:17,871 INFO L226 Difference]: Without dead ends: 48 [2024-11-19 06:32:17,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 06:32:17,873 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:17,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 232 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:32:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-19 06:32:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2024-11-19 06:32:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-19 06:32:17,874 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 25 [2024-11-19 06:32:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:17,875 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-19 06:32:17,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 37 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-19 06:32:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 06:32:17,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:17,876 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:17,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 06:32:18,076 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,SelfDestructingSolverStorable26 [2024-11-19 06:32:18,077 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:18,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1289791583, now seen corresponding path program 1 times [2024-11-19 06:32:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:18,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835832883] [2024-11-19 06:32:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:32:18,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:18,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835832883] [2024-11-19 06:32:18,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835832883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:18,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675498860] [2024-11-19 06:32:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:18,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:18,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:18,224 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) [2024-11-19 06:32:18,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:32:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:18,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 06:32:18,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:18,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:18,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675498860] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:18,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:18,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2024-11-19 06:32:18,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051525827] [2024-11-19 06:32:18,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:18,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:32:18,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:18,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:32:18,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:32:18,557 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:18,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:18,745 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2024-11-19 06:32:18,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:32:18,745 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-19 06:32:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:18,746 INFO L225 Difference]: With dead ends: 41 [2024-11-19 06:32:18,746 INFO L226 Difference]: Without dead ends: 41 [2024-11-19 06:32:18,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:32:18,747 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:18,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 192 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:32:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-19 06:32:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-19 06:32:18,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.131578947368421) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:18,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2024-11-19 06:32:18,748 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 31 [2024-11-19 06:32:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:18,748 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2024-11-19 06:32:18,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2024-11-19 06:32:18,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 06:32:18,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:18,749 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] [2024-11-19 06:32:18,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 06:32:18,953 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,SelfDestructingSolverStorable27 [2024-11-19 06:32:18,954 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:18,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:18,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1755885363, now seen corresponding path program 1 times [2024-11-19 06:32:18,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:18,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259902695] [2024-11-19 06:32:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:18,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:19,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:19,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259902695] [2024-11-19 06:32:19,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259902695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:19,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411729121] [2024-11-19 06:32:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:19,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:19,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:19,283 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) [2024-11-19 06:32:19,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:32:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:19,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 06:32:19,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:19,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:32:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:19,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:19,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411729121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:19,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:19,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2024-11-19 06:32:19,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191249580] [2024-11-19 06:32:19,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:19,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:32:19,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:19,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:32:19,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:32:19,759 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 25 states, 24 states have (on average 3.125) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:19,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:19,974 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-11-19 06:32:19,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:32:19,974 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.125) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 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 33 [2024-11-19 06:32:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:19,975 INFO L225 Difference]: With dead ends: 53 [2024-11-19 06:32:19,975 INFO L226 Difference]: Without dead ends: 50 [2024-11-19 06:32:19,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2024-11-19 06:32:19,976 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:19,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 181 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:19,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-19 06:32:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2024-11-19 06:32:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 41 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2024-11-19 06:32:19,977 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 33 [2024-11-19 06:32:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:19,977 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2024-11-19 06:32:19,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.125) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2024-11-19 06:32:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 06:32:19,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:19,978 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:19,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 06:32:20,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 06:32:20,185 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:20,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1755836596, now seen corresponding path program 1 times [2024-11-19 06:32:20,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:20,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143381404] [2024-11-19 06:32:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:20,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:20,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143381404] [2024-11-19 06:32:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143381404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537477425] [2024-11-19 06:32:20,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:20,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:20,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:20,541 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) [2024-11-19 06:32:20,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:32:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:20,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-19 06:32:20,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:20,708 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 [2024-11-19 06:32:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:20,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:20,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-19 06:32:20,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:32:21,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:32:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:21,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537477425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:21,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:21,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 28 [2024-11-19 06:32:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110401462] [2024-11-19 06:32:21,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:21,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:32:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:32:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2024-11-19 06:32:21,076 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:21,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:21,555 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2024-11-19 06:32:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-19 06:32:21,555 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-19 06:32:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:21,556 INFO L225 Difference]: With dead ends: 114 [2024-11-19 06:32:21,556 INFO L226 Difference]: Without dead ends: 56 [2024-11-19 06:32:21,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=1620, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 06:32:21,557 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:21,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 269 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:32:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-19 06:32:21,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2024-11-19 06:32:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:21,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2024-11-19 06:32:21,559 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 33 [2024-11-19 06:32:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:21,559 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2024-11-19 06:32:21,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:21,560 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2024-11-19 06:32:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 06:32:21,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:21,560 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:21,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:21,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:21,765 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:21,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:21,765 INFO L85 PathProgramCache]: Analyzing trace with hash -313150958, now seen corresponding path program 2 times [2024-11-19 06:32:21,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:21,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752962215] [2024-11-19 06:32:21,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:21,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:21,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:21,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:22,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752962215] [2024-11-19 06:32:22,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752962215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:22,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2415019] [2024-11-19 06:32:22,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:22,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:22,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:22,075 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) [2024-11-19 06:32:22,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:32:22,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:22,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:22,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 06:32:22,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:22,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:22,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2415019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:22,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:22,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-19 06:32:22,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649074786] [2024-11-19 06:32:22,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:22,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:32:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:32:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:32:22,565 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:22,758 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-19 06:32:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:32:22,759 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-19 06:32:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:22,759 INFO L225 Difference]: With dead ends: 58 [2024-11-19 06:32:22,760 INFO L226 Difference]: Without dead ends: 58 [2024-11-19 06:32:22,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-19 06:32:22,760 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:22,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 226 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-19 06:32:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2024-11-19 06:32:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.1) internal successors, (55), 52 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) [2024-11-19 06:32:22,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2024-11-19 06:32:22,762 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 41 [2024-11-19 06:32:22,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:22,763 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2024-11-19 06:32:22,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2024-11-19 06:32:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 06:32:22,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:22,763 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:22,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 06:32:22,967 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,SelfDestructingSolverStorable30 [2024-11-19 06:32:22,967 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:22,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash -290359725, now seen corresponding path program 1 times [2024-11-19 06:32:22,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499252815] [2024-11-19 06:32:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:23,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499252815] [2024-11-19 06:32:23,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499252815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:23,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250118023] [2024-11-19 06:32:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:32:23,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:23,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:23,267 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) [2024-11-19 06:32:23,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:32:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:23,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 06:32:23,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:23,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:23,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:23,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250118023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:23,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:23,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2024-11-19 06:32:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274740291] [2024-11-19 06:32:23,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:23,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 06:32:23,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 06:32:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-19 06:32:23,731 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:23,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:23,968 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2024-11-19 06:32:23,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:32:23,969 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 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 43 [2024-11-19 06:32:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:23,969 INFO L225 Difference]: With dead ends: 55 [2024-11-19 06:32:23,969 INFO L226 Difference]: Without dead ends: 55 [2024-11-19 06:32:23,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2024-11-19 06:32:23,970 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:23,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 273 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-19 06:32:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-19 06:32:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2024-11-19 06:32:23,972 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 43 [2024-11-19 06:32:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:23,973 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2024-11-19 06:32:23,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 24 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2024-11-19 06:32:23,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 06:32:23,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:23,974 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:23,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 06:32:24,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:24,175 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:24,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1315049854, now seen corresponding path program 2 times [2024-11-19 06:32:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:24,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692979510] [2024-11-19 06:32:24,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:24,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:24,187 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 06:32:24,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-19 06:32:24,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692979510] [2024-11-19 06:32:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692979510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:32:24,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:32:24,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:32:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462549360] [2024-11-19 06:32:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:32:24,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:32:24,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:32:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:24,245 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:24,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:24,280 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2024-11-19 06:32:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:32:24,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 [2024-11-19 06:32:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:24,281 INFO L225 Difference]: With dead ends: 54 [2024-11-19 06:32:24,281 INFO L226 Difference]: Without dead ends: 51 [2024-11-19 06:32:24,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:32:24,283 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 5 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:24,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 78 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:32:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-19 06:32:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-19 06:32:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 50 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:24,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-19 06:32:24,285 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2024-11-19 06:32:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:24,285 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-19 06:32:24,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-19 06:32:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 06:32:24,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:24,286 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:24,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-19 06:32:24,286 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:24,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:24,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1315001087, now seen corresponding path program 3 times [2024-11-19 06:32:24,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:24,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168032890] [2024-11-19 06:32:24,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:24,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:24,325 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 06:32:24,326 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:24,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168032890] [2024-11-19 06:32:24,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168032890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:24,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010553375] [2024-11-19 06:32:24,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:24,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:24,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:24,717 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) [2024-11-19 06:32:24,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:32:24,857 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-19 06:32:24,857 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:24,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-19 06:32:24,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:24,951 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 [2024-11-19 06:32:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:25,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:25,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:32:25,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:32:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:32:25,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010553375] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:25,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:25,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2024-11-19 06:32:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594399653] [2024-11-19 06:32:25,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:25,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:32:25,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:32:25,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:32:25,266 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 25 states, 25 states have (on average 3.44) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:25,483 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2024-11-19 06:32:25,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 06:32:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.44) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 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 [2024-11-19 06:32:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:25,484 INFO L225 Difference]: With dead ends: 90 [2024-11-19 06:32:25,484 INFO L226 Difference]: Without dead ends: 58 [2024-11-19 06:32:25,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2024-11-19 06:32:25,485 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:25,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 413 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:25,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-19 06:32:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2024-11-19 06:32:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 54 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2024-11-19 06:32:25,487 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 47 [2024-11-19 06:32:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:25,487 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2024-11-19 06:32:25,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.44) internal successors, (86), 25 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2024-11-19 06:32:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 06:32:25,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:25,488 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:25,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:25,688 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,SelfDestructingSolverStorable33 [2024-11-19 06:32:25,688 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:25,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:25,689 INFO L85 PathProgramCache]: Analyzing trace with hash 87226436, now seen corresponding path program 4 times [2024-11-19 06:32:25,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:25,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638652338] [2024-11-19 06:32:25,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:25,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:25,725 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:25,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:26,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638652338] [2024-11-19 06:32:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638652338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429798979] [2024-11-19 06:32:26,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:26,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:26,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:26,572 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) [2024-11-19 06:32:26,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:32:26,664 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:26,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:26,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-19 06:32:26,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:26,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-19 06:32:27,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:32:27,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2024-11-19 06:32:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:27,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:28,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:32:28,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 38 [2024-11-19 06:32:28,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2024-11-19 06:32:28,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:32:28,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2024-11-19 06:32:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:28,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429798979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:28,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:28,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 63 [2024-11-19 06:32:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391517808] [2024-11-19 06:32:28,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:28,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-19 06:32:28,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-19 06:32:28,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=3493, Unknown=0, NotChecked=0, Total=3906 [2024-11-19 06:32:28,433 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 63 states, 63 states have (on average 1.5238095238095237) internal successors, (96), 63 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:28,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:28,892 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2024-11-19 06:32:28,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 06:32:28,892 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.5238095238095237) internal successors, (96), 63 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-19 06:32:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:28,893 INFO L225 Difference]: With dead ends: 84 [2024-11-19 06:32:28,893 INFO L226 Difference]: Without dead ends: 62 [2024-11-19 06:32:28,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1799 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=475, Invalid=4217, Unknown=0, NotChecked=0, Total=4692 [2024-11-19 06:32:28,894 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:28,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 288 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:32:28,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-19 06:32:28,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2024-11-19 06:32:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2024-11-19 06:32:28,896 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 51 [2024-11-19 06:32:28,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:28,896 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2024-11-19 06:32:28,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.5238095238095237) internal successors, (96), 63 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:28,896 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2024-11-19 06:32:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 06:32:28,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:28,897 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:28,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 06:32:29,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-19 06:32:29,097 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:29,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:29,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1294426809, now seen corresponding path program 5 times [2024-11-19 06:32:29,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:29,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184114451] [2024-11-19 06:32:29,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:32:29,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:29,119 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 06:32:29,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:29,376 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:29,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184114451] [2024-11-19 06:32:29,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184114451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:29,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023874147] [2024-11-19 06:32:29,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 06:32:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:29,379 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:29,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:32:29,497 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-19 06:32:29,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:29,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-19 06:32:29,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:29,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:29,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2024-11-19 06:32:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:30,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023874147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:30,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:30,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2024-11-19 06:32:30,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713648210] [2024-11-19 06:32:30,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:30,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:32:30,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:30,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:32:30,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2024-11-19 06:32:30,057 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 28 states, 27 states have (on average 4.407407407407407) internal successors, (119), 28 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:30,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:30,285 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2024-11-19 06:32:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:32:30,286 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.407407407407407) internal successors, (119), 28 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-19 06:32:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:30,287 INFO L225 Difference]: With dead ends: 67 [2024-11-19 06:32:30,287 INFO L226 Difference]: Without dead ends: 67 [2024-11-19 06:32:30,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2024-11-19 06:32:30,287 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:30,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 242 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:30,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-19 06:32:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-11-19 06:32:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 62 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-19 06:32:30,289 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 55 [2024-11-19 06:32:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:30,290 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-19 06:32:30,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.407407407407407) internal successors, (119), 28 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-19 06:32:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 06:32:30,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:30,290 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:30,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:30,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-19 06:32:30,495 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:30,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:30,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1596352584, now seen corresponding path program 2 times [2024-11-19 06:32:30,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:30,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187252313] [2024-11-19 06:32:30,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:30,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:30,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:30,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187252313] [2024-11-19 06:32:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187252313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7789035] [2024-11-19 06:32:30,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:30,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:30,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:30,996 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:30,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:32:31,123 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:31,123 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:31,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 06:32:31,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:31,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:32:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:31,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:31,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7789035] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:31,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:31,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 32 [2024-11-19 06:32:31,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822560011] [2024-11-19 06:32:31,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:31,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 06:32:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 06:32:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 06:32:31,762 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 33 states, 32 states have (on average 3.65625) internal successors, (117), 33 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:32,074 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2024-11-19 06:32:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:32:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.65625) internal successors, (117), 33 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-19 06:32:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:32,075 INFO L225 Difference]: With dead ends: 65 [2024-11-19 06:32:32,075 INFO L226 Difference]: Without dead ends: 65 [2024-11-19 06:32:32,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=1174, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 06:32:32,076 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 9 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:32,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 302 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-19 06:32:32,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-19 06:32:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0634920634920635) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2024-11-19 06:32:32,078 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 57 [2024-11-19 06:32:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:32,078 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2024-11-19 06:32:32,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.65625) internal successors, (117), 33 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2024-11-19 06:32:32,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-19 06:32:32,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:32,079 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:32,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 06:32:32,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-19 06:32:32,280 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:32,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash 430939254, now seen corresponding path program 6 times [2024-11-19 06:32:32,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:32,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103601959] [2024-11-19 06:32:32,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:32:32,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:32,320 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 06:32:32,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:32,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:32,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103601959] [2024-11-19 06:32:32,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103601959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:32,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342245197] [2024-11-19 06:32:32,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 06:32:32,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:32,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:32,776 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:32,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:32:32,925 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-19 06:32:32,926 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:32,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-19 06:32:32,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:33,167 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 [2024-11-19 06:32:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:32:33,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:33,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-19 06:32:33,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:32:33,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:32:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:32:33,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342245197] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:33,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:33,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25, 18] total 51 [2024-11-19 06:32:33,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864900209] [2024-11-19 06:32:33,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:33,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 06:32:33,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 06:32:33,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2406, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 06:32:33,970 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:35,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:35,224 INFO L93 Difference]: Finished difference Result 181 states and 186 transitions. [2024-11-19 06:32:35,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-19 06:32:35,225 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-19 06:32:35,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:35,225 INFO L225 Difference]: With dead ends: 181 [2024-11-19 06:32:35,225 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 06:32:35,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=358, Invalid=5962, Unknown=0, NotChecked=0, Total=6320 [2024-11-19 06:32:35,227 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 59 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:35,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 553 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:32:35,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 06:32:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2024-11-19 06:32:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 71 states have (on average 1.056338028169014) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2024-11-19 06:32:35,229 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 61 [2024-11-19 06:32:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:35,229 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2024-11-19 06:32:35,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2024-11-19 06:32:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-19 06:32:35,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:35,230 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:35,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:35,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:35,435 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:35,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:35,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1211614660, now seen corresponding path program 7 times [2024-11-19 06:32:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:35,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982128124] [2024-11-19 06:32:35,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:32:35,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 62 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:35,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982128124] [2024-11-19 06:32:35,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982128124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511196690] [2024-11-19 06:32:35,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 06:32:35,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:35,860 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:35,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:32:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:32:35,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-19 06:32:36,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:36,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:36,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:36,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511196690] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:36,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:36,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2024-11-19 06:32:36,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32641762] [2024-11-19 06:32:36,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:36,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-19 06:32:36,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:36,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-19 06:32:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:32:36,464 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 29 states, 28 states have (on average 4.214285714285714) internal successors, (118), 29 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:36,701 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2024-11-19 06:32:36,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 06:32:36,701 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.214285714285714) internal successors, (118), 29 states have internal predecessors, (118), 0 states have call successors, (0), 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 69 [2024-11-19 06:32:36,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:36,702 INFO L225 Difference]: With dead ends: 81 [2024-11-19 06:32:36,702 INFO L226 Difference]: Without dead ends: 81 [2024-11-19 06:32:36,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2024-11-19 06:32:36,703 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:36,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 304 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-19 06:32:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2024-11-19 06:32:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2024-11-19 06:32:36,704 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 69 [2024-11-19 06:32:36,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:36,705 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2024-11-19 06:32:36,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.214285714285714) internal successors, (118), 29 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2024-11-19 06:32:36,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-19 06:32:36,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:36,706 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:36,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 06:32:36,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-19 06:32:36,906 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:36,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash -425550851, now seen corresponding path program 3 times [2024-11-19 06:32:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:36,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015367911] [2024-11-19 06:32:36,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:36,934 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 06:32:36,935 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 6 proven. 70 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:37,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:37,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015367911] [2024-11-19 06:32:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015367911] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:37,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701141737] [2024-11-19 06:32:37,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:37,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:37,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:37,517 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:37,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 06:32:37,698 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 06:32:37,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:37,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-19 06:32:37,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 15 proven. 61 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:37,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:38,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-19 06:32:38,153 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 15 proven. 61 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:38,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701141737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:38,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:38,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 34 [2024-11-19 06:32:38,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597166795] [2024-11-19 06:32:38,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:38,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-19 06:32:38,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:38,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-19 06:32:38,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2024-11-19 06:32:38,155 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 35 states, 34 states have (on average 3.676470588235294) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:38,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:38,433 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2024-11-19 06:32:38,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-19 06:32:38,433 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.676470588235294) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-19 06:32:38,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:38,434 INFO L225 Difference]: With dead ends: 79 [2024-11-19 06:32:38,434 INFO L226 Difference]: Without dead ends: 79 [2024-11-19 06:32:38,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 119 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=256, Invalid=1550, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 06:32:38,435 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:38,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 229 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:32:38,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-19 06:32:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-19 06:32:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.051948051948052) internal successors, (81), 78 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:38,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2024-11-19 06:32:38,438 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 71 [2024-11-19 06:32:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:38,438 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2024-11-19 06:32:38,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.676470588235294) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:38,438 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2024-11-19 06:32:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-19 06:32:38,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:38,438 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:38,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:38,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-19 06:32:38,639 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:38,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1540418987, now seen corresponding path program 8 times [2024-11-19 06:32:38,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:38,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151463313] [2024-11-19 06:32:38,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:38,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:38,668 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:38,668 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:39,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151463313] [2024-11-19 06:32:39,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151463313] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:39,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503985636] [2024-11-19 06:32:39,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:32:39,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:39,156 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:39,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 06:32:39,293 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:32:39,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:39,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-19 06:32:39,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:39,456 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 [2024-11-19 06:32:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:39,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:39,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-19 06:32:39,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-19 06:32:39,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-19 06:32:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 5 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:32:39,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503985636] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:39,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:39,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 20] total 38 [2024-11-19 06:32:39,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342256216] [2024-11-19 06:32:39,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:39,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-19 06:32:39,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:39,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-19 06:32:39,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1317, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 06:32:39,887 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:41,045 INFO L93 Difference]: Finished difference Result 216 states and 221 transitions. [2024-11-19 06:32:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-19 06:32:41,045 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 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 75 [2024-11-19 06:32:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:41,046 INFO L225 Difference]: With dead ends: 216 [2024-11-19 06:32:41,046 INFO L226 Difference]: Without dead ends: 93 [2024-11-19 06:32:41,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=246, Invalid=4176, Unknown=0, NotChecked=0, Total=4422 [2024-11-19 06:32:41,047 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:41,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 600 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:32:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-19 06:32:41,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2024-11-19 06:32:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2024-11-19 06:32:41,050 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 75 [2024-11-19 06:32:41,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:41,050 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2024-11-19 06:32:41,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3684210526315788) internal successors, (128), 38 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2024-11-19 06:32:41,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-19 06:32:41,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:41,051 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:41,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:41,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:41,256 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:41,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash 918722801, now seen corresponding path program 9 times [2024-11-19 06:32:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:41,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881196826] [2024-11-19 06:32:41,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:41,288 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 06:32:41,288 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 06:32:41,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:41,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881196826] [2024-11-19 06:32:41,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881196826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:41,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986595924] [2024-11-19 06:32:41,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:32:41,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:41,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:41,907 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:41,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 06:32:42,104 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-19 06:32:42,105 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:42,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-19 06:32:42,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 28 proven. 126 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:32:42,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:42,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 06:32:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 28 proven. 82 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 06:32:43,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986595924] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:43,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:43,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 15] total 47 [2024-11-19 06:32:43,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381293873] [2024-11-19 06:32:43,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:43,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 06:32:43,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:43,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 06:32:43,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2006, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 06:32:43,187 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 48 states, 47 states have (on average 4.446808510638298) internal successors, (209), 48 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:43,671 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2024-11-19 06:32:43,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 06:32:43,671 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.446808510638298) internal successors, (209), 48 states have internal predecessors, (209), 0 states have call successors, (0), 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 83 [2024-11-19 06:32:43,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:43,672 INFO L225 Difference]: With dead ends: 95 [2024-11-19 06:32:43,672 INFO L226 Difference]: Without dead ends: 95 [2024-11-19 06:32:43,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=424, Invalid=2998, Unknown=0, NotChecked=0, Total=3422 [2024-11-19 06:32:43,673 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 44 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:43,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 292 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:32:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-19 06:32:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2024-11-19 06:32:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2024-11-19 06:32:43,678 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 83 [2024-11-19 06:32:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:43,680 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2024-11-19 06:32:43,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.446808510638298) internal successors, (209), 48 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2024-11-19 06:32:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 06:32:43,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:43,681 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:43,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 06:32:43,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:43,882 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:43,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1870651022, now seen corresponding path program 4 times [2024-11-19 06:32:43,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:43,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245462744] [2024-11-19 06:32:43,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:43,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:43,921 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:43,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-19 06:32:46,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:32:46,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245462744] [2024-11-19 06:32:46,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245462744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:32:46,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429857933] [2024-11-19 06:32:46,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:46,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:46,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:32:46,257 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:32:46,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-19 06:32:46,406 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:46,407 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:32:46,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-19 06:32:46,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:32:46,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-19 06:32:50,403 INFO L349 Elim1Store]: treesize reduction 16, result has 70.9 percent of original size [2024-11-19 06:32:50,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 80 treesize of output 81 [2024-11-19 06:32:50,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:32:50,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 35 [2024-11-19 06:32:50,822 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 06:32:50,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:32:54,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:32:54,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 64 [2024-11-19 06:32:54,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 64 [2024-11-19 06:32:54,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 96 [2024-11-19 06:32:54,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 06:32:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 06:32:54,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429857933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:32:54,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:32:54,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 35, 35] total 104 [2024-11-19 06:32:54,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262593762] [2024-11-19 06:32:54,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:32:54,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-19 06:32:54,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:32:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-19 06:32:54,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=883, Invalid=10037, Unknown=0, NotChecked=0, Total=10920 [2024-11-19 06:32:54,520 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 105 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 105 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:56,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:32:56,796 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-19 06:32:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-19 06:32:56,796 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 105 states have internal predecessors, (141), 0 states have call successors, (0), 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 85 [2024-11-19 06:32:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:32:56,797 INFO L225 Difference]: With dead ends: 93 [2024-11-19 06:32:56,797 INFO L226 Difference]: Without dead ends: 93 [2024-11-19 06:32:56,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3727 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1145, Invalid=11287, Unknown=0, NotChecked=0, Total=12432 [2024-11-19 06:32:56,798 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 2636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 06:32:56,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 820 Invalid, 2636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2628 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 06:32:56,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-19 06:32:56,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2024-11-19 06:32:56,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-11-19 06:32:56,800 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 85 [2024-11-19 06:32:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:32:56,800 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-11-19 06:32:56,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 105 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:32:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-11-19 06:32:56,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-19 06:32:56,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:32:56,800 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:32:56,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-19 06:32:57,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:32:57,001 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-19 06:32:57,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:32:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash 668250272, now seen corresponding path program 10 times [2024-11-19 06:32:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:32:57,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505278997] [2024-11-19 06:32:57,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:32:57,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:32:57,089 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:32:57,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 8 proven. 141 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-19 06:33:06,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:33:06,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505278997] [2024-11-19 06:33:06,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505278997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:33:06,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74519650] [2024-11-19 06:33:06,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 06:33:06,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:33:06,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:33:06,142 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:33:06,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-19 06:33:06,286 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 06:33:06,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:33:06,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-11-19 06:33:06,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:33:06,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10