./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test24-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test24-1.c -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 61e163c7079e2ec105ad677de51f27ac7eccc49ef492909c4fa51ebc02ead9b7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 16:13:19,579 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 16:13:19,636 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 16:13:19,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 16:13:19,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 16:13:19,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 16:13:19,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 16:13:19,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 16:13:19,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 16:13:19,665 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 16:13:19,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 16:13:19,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 16:13:19,667 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 16:13:19,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 16:13:19,668 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 16:13:19,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 16:13:19,669 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 16:13:19,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 16:13:19,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 16:13:19,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 16:13:19,670 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 16:13:19,671 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 16:13:19,671 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 16:13:19,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 16:13:19,672 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 16:13:19,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 16:13:19,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 16:13:19,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 16:13:19,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 16:13:19,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 16:13:19,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 16:13:19,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 16:13:19,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 16:13:19,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 16:13:19,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 16:13:19,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 16:13:19,676 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 16:13:19,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 16:13:19,676 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 16:13:19,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 16:13:19,677 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 16:13:19,677 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 16:13:19,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61e163c7079e2ec105ad677de51f27ac7eccc49ef492909c4fa51ebc02ead9b7 [2024-10-24 16:13:19,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 16:13:19,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 16:13:19,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 16:13:19,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 16:13:19,967 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 16:13:19,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test24-1.c [2024-10-24 16:13:21,251 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 16:13:21,403 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 16:13:21,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test24-1.c [2024-10-24 16:13:21,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baae0397a/4ba6750d805647f3acaf795fb78fb80d/FLAG5b9c86dc4 [2024-10-24 16:13:21,808 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baae0397a/4ba6750d805647f3acaf795fb78fb80d [2024-10-24 16:13:21,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 16:13:21,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 16:13:21,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 16:13:21,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 16:13:21,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 16:13:21,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:13:21" (1/1) ... [2024-10-24 16:13:21,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e85997e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:21, skipping insertion in model container [2024-10-24 16:13:21,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:13:21" (1/1) ... [2024-10-24 16:13:21,831 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 16:13:21,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 16:13:21,995 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 16:13:22,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 16:13:22,022 INFO L204 MainTranslator]: Completed translation [2024-10-24 16:13:22,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22 WrapperNode [2024-10-24 16:13:22,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 16:13:22,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 16:13:22,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 16:13:22,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 16:13:22,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,047 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2024-10-24 16:13:22,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 16:13:22,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 16:13:22,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 16:13:22,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 16:13:22,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,060 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,069 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-24 16:13:22,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 16:13:22,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 16:13:22,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 16:13:22,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 16:13:22,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (1/1) ... [2024-10-24 16:13:22,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 16:13:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:13:22,104 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) [2024-10-24 16:13:22,111 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 [2024-10-24 16:13:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 16:13:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 16:13:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 16:13:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 16:13:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 16:13:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 16:13:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 16:13:22,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 16:13:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 16:13:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 16:13:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 16:13:22,200 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 16:13:22,201 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 16:13:22,303 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-10-24 16:13:22,304 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 16:13:22,334 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 16:13:22,335 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 16:13:22,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:13:22 BoogieIcfgContainer [2024-10-24 16:13:22,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 16:13:22,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 16:13:22,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 16:13:22,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 16:13:22,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:13:21" (1/3) ... [2024-10-24 16:13:22,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91bd457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:13:22, skipping insertion in model container [2024-10-24 16:13:22,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:13:22" (2/3) ... [2024-10-24 16:13:22,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91bd457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:13:22, skipping insertion in model container [2024-10-24 16:13:22,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:13:22" (3/3) ... [2024-10-24 16:13:22,367 INFO L112 eAbstractionObserver]: Analyzing ICFG test24-1.c [2024-10-24 16:13:22,387 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 16:13:22,388 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-24 16:13:22,452 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 16:13:22,464 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;@59afd568, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 16:13:22,465 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-24 16:13:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:22,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-24 16:13:22,472 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:22,473 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-24 16:13:22,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:22,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash 84730, now seen corresponding path program 1 times [2024-10-24 16:13:22,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:22,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794858129] [2024-10-24 16:13:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:22,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:22,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:22,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794858129] [2024-10-24 16:13:22,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794858129] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:22,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:13:22,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 16:13:22,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888712672] [2024-10-24 16:13:22,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:22,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 16:13:22,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:22,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 16:13:22,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:13:22,672 INFO L87 Difference]: Start difference. First operand has 23 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:22,703 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-10-24 16:13:22,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 16:13:22,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-24 16:13:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:22,711 INFO L225 Difference]: With dead ends: 22 [2024-10-24 16:13:22,711 INFO L226 Difference]: Without dead ends: 21 [2024-10-24 16:13:22,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 16:13:22,714 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:22,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 9 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-24 16:13:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-24 16:13:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:22,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-10-24 16:13:22,734 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 3 [2024-10-24 16:13:22,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:22,735 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-10-24 16:13:22,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:22,735 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-10-24 16:13:22,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-24 16:13:22,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:22,736 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-24 16:13:22,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 16:13:22,736 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:22,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 84731, now seen corresponding path program 1 times [2024-10-24 16:13:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:22,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048237846] [2024-10-24 16:13:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:22,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:22,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048237846] [2024-10-24 16:13:22,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048237846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:22,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:13:22,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 16:13:22,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736651909] [2024-10-24 16:13:22,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:22,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 16:13:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:22,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 16:13:22,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 16:13:22,853 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:22,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:22,897 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2024-10-24 16:13:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 16:13:22,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-24 16:13:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:22,898 INFO L225 Difference]: With dead ends: 21 [2024-10-24 16:13:22,898 INFO L226 Difference]: Without dead ends: 21 [2024-10-24 16:13:22,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:13:22,899 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:22,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 19 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:22,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-24 16:13:22,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2024-10-24 16:13:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.75) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:22,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-10-24 16:13:22,903 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 3 [2024-10-24 16:13:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:22,903 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-10-24 16:13:22,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:22,911 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-10-24 16:13:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-24 16:13:22,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:22,912 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-24 16:13:22,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 16:13:22,912 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:22,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:22,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2628253, now seen corresponding path program 1 times [2024-10-24 16:13:22,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:22,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938664377] [2024-10-24 16:13:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:22,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:22,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938664377] [2024-10-24 16:13:22,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938664377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:22,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:13:22,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 16:13:22,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321618045] [2024-10-24 16:13:22,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:22,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 16:13:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:22,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 16:13:22,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 16:13:22,954 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:23,009 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2024-10-24 16:13:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 16:13:23,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-24 16:13:23,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:23,011 INFO L225 Difference]: With dead ends: 19 [2024-10-24 16:13:23,011 INFO L226 Difference]: Without dead ends: 19 [2024-10-24 16:13:23,011 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 [2024-10-24 16:13:23,012 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:23,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 29 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-24 16:13:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-24 16:13:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 18 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) [2024-10-24 16:13:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-10-24 16:13:23,015 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2024-10-24 16:13:23,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:23,015 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-10-24 16:13:23,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,015 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-10-24 16:13:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-24 16:13:23,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:23,016 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-24 16:13:23,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 16:13:23,016 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:23,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:23,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2628254, now seen corresponding path program 1 times [2024-10-24 16:13:23,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:23,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365500613] [2024-10-24 16:13:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:23,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:23,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:23,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365500613] [2024-10-24 16:13:23,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365500613] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:23,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:13:23,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 16:13:23,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394165924] [2024-10-24 16:13:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:23,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:13:23,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:23,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:13:23,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:13:23,157 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:23,203 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2024-10-24 16:13:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:13:23,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-24 16:13:23,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:23,204 INFO L225 Difference]: With dead ends: 19 [2024-10-24 16:13:23,205 INFO L226 Difference]: Without dead ends: 19 [2024-10-24 16:13:23,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:13:23,206 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:23,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-24 16:13:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-10-24 16:13:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 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) [2024-10-24 16:13:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-10-24 16:13:23,210 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 4 [2024-10-24 16:13:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:23,210 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-10-24 16:13:23,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-10-24 16:13:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-24 16:13:23,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:23,211 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-24 16:13:23,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 16:13:23,211 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:23,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:23,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2663386, now seen corresponding path program 1 times [2024-10-24 16:13:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:23,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710045020] [2024-10-24 16:13:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:23,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:23,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:23,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710045020] [2024-10-24 16:13:23,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710045020] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:23,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:13:23,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 16:13:23,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685884232] [2024-10-24 16:13:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:23,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 16:13:23,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:23,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 16:13:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 16:13:23,304 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:23,337 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-10-24 16:13:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 16:13:23,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-24 16:13:23,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:23,338 INFO L225 Difference]: With dead ends: 17 [2024-10-24 16:13:23,339 INFO L226 Difference]: Without dead ends: 15 [2024-10-24 16:13:23,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 16:13:23,341 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:23,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:23,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-24 16:13:23,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-24 16:13:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 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) [2024-10-24 16:13:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-10-24 16:13:23,344 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 4 [2024-10-24 16:13:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:23,345 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-10-24 16:13:23,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-10-24 16:13:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-24 16:13:23,346 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:23,346 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 16:13:23,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 16:13:23,347 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:23,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:23,347 INFO L85 PathProgramCache]: Analyzing trace with hash 81477226, now seen corresponding path program 1 times [2024-10-24 16:13:23,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:23,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948414344] [2024-10-24 16:13:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:23,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:23,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:23,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:23,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948414344] [2024-10-24 16:13:23,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948414344] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:23,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:13:23,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 16:13:23,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364962945] [2024-10-24 16:13:23,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:23,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:13:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:23,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:13:23,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:13:23,432 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:23,468 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2024-10-24 16:13:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:13:23,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-10-24 16:13:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:23,470 INFO L225 Difference]: With dead ends: 14 [2024-10-24 16:13:23,470 INFO L226 Difference]: Without dead ends: 14 [2024-10-24 16:13:23,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:13:23,471 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 16 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 [2024-10-24 16:13:23,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 16 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-10-24 16:13:23,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-10-24 16:13:23,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 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) [2024-10-24 16:13:23,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-10-24 16:13:23,473 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2024-10-24 16:13:23,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:23,476 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-10-24 16:13:23,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,476 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-10-24 16:13:23,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-24 16:13:23,476 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:23,476 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 16:13:23,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 16:13:23,477 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:23,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash 81477227, now seen corresponding path program 1 times [2024-10-24 16:13:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:23,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408648065] [2024-10-24 16:13:23,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:23,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:23,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:23,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408648065] [2024-10-24 16:13:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408648065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:23,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:13:23,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 16:13:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356540773] [2024-10-24 16:13:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:23,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:13:23,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:13:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 16:13:23,583 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:23,634 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2024-10-24 16:13:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 16:13:23,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-10-24 16:13:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:23,635 INFO L225 Difference]: With dead ends: 13 [2024-10-24 16:13:23,635 INFO L226 Difference]: Without dead ends: 13 [2024-10-24 16:13:23,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 16:13:23,637 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:23,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:23,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-24 16:13:23,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-24 16:13:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 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) [2024-10-24 16:13:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-10-24 16:13:23,641 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2024-10-24 16:13:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:23,641 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-10-24 16:13:23,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-10-24 16:13:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-24 16:13:23,641 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:23,642 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:13:23,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 16:13:23,642 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:23,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash 631510769, now seen corresponding path program 1 times [2024-10-24 16:13:23,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:23,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059822863] [2024-10-24 16:13:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:23,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:23,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:23,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:23,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059822863] [2024-10-24 16:13:23,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059822863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:23,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 16:13:23,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 16:13:23,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286495824] [2024-10-24 16:13:23,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:23,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 16:13:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:23,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 16:13:23,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 16:13:23,808 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:23,864 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-10-24 16:13:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 16:13:23,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-24 16:13:23,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:23,865 INFO L225 Difference]: With dead ends: 15 [2024-10-24 16:13:23,865 INFO L226 Difference]: Without dead ends: 15 [2024-10-24 16:13:23,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-24 16:13:23,866 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:23,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:23,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-24 16:13:23,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-24 16:13:23,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 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) [2024-10-24 16:13:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-10-24 16:13:23,871 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2024-10-24 16:13:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:23,871 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-10-24 16:13:23,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-10-24 16:13:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-24 16:13:23,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:23,872 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:13:23,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 16:13:23,873 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:23,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1292971896, now seen corresponding path program 1 times [2024-10-24 16:13:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:23,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415516299] [2024-10-24 16:13:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:24,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415516299] [2024-10-24 16:13:24,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415516299] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:13:24,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52737372] [2024-10-24 16:13:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:24,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:13:24,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:13:24,139 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) [2024-10-24 16:13:24,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 16:13:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:24,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-24 16:13:24,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:13:24,229 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 [2024-10-24 16:13:24,268 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 17 treesize of output 13 [2024-10-24 16:13:24,463 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 28 treesize of output 10 [2024-10-24 16:13:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:24,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:13:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:24,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52737372] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:13:24,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:13:24,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2024-10-24 16:13:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829305557] [2024-10-24 16:13:24,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:13:24,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-24 16:13:24,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:24,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-24 16:13:24,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-10-24 16:13:24,742 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:24,939 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2024-10-24 16:13:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 16:13:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-24 16:13:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:24,940 INFO L225 Difference]: With dead ends: 14 [2024-10-24 16:13:24,940 INFO L226 Difference]: Without dead ends: 14 [2024-10-24 16:13:24,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2024-10-24 16:13:24,940 INFO L432 NwaCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:24,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:13:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-10-24 16:13:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-10-24 16:13:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 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) [2024-10-24 16:13:24,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2024-10-24 16:13:24,945 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2024-10-24 16:13:24,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:24,945 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2024-10-24 16:13:24,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:24,946 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2024-10-24 16:13:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-24 16:13:24,946 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:24,946 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:13:24,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 16:13:25,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:13:25,147 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:25,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:25,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1292971895, now seen corresponding path program 1 times [2024-10-24 16:13:25,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458721036] [2024-10-24 16:13:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:25,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:25,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458721036] [2024-10-24 16:13:25,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458721036] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:13:25,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964029210] [2024-10-24 16:13:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:25,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:13:25,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:13:25,186 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) [2024-10-24 16:13:25,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 16:13:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:25,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 16:13:25,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:13:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 16:13:25,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 16:13:25,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964029210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 16:13:25,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 16:13:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-10-24 16:13:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962946004] [2024-10-24 16:13:25,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 16:13:25,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 16:13:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 16:13:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 16:13:25,245 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2024-10-24 16:13:25,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:25,265 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2024-10-24 16:13:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 16:13:25,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 10 [2024-10-24 16:13:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:25,266 INFO L225 Difference]: With dead ends: 13 [2024-10-24 16:13:25,266 INFO L226 Difference]: Without dead ends: 13 [2024-10-24 16:13:25,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 16:13:25,267 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:25,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 16:13:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-24 16:13:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-24 16:13:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2024-10-24 16:13:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-10-24 16:13:25,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2024-10-24 16:13:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:25,268 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2024-10-24 16:13:25,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2024-10-24 16:13:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-10-24 16:13:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-24 16:13:25,268 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:25,269 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:13:25,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 16:13:25,469 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,SelfDestructingSolverStorable9 [2024-10-24 16:13:25,470 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:25,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1300473350, now seen corresponding path program 1 times [2024-10-24 16:13:25,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:25,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534898343] [2024-10-24 16:13:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:25,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534898343] [2024-10-24 16:13:25,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534898343] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:13:25,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987608224] [2024-10-24 16:13:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:25,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:13:25,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:13:25,877 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) [2024-10-24 16:13:25,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 16:13:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:25,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 16:13:25,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:13:25,979 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 17 treesize of output 9 [2024-10-24 16:13:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:26,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:13:26,086 INFO L349 Elim1Store]: treesize reduction 4, result has 73.3 percent of original size [2024-10-24 16:13:26,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-10-24 16:13:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987608224] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:13:26,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:13:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 19 [2024-10-24 16:13:26,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156299257] [2024-10-24 16:13:26,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:13:26,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 16:13:26,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 16:13:26,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-10-24 16:13:26,097 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:26,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:26,283 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2024-10-24 16:13:26,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 16:13:26,283 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-24 16:13:26,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:26,283 INFO L225 Difference]: With dead ends: 19 [2024-10-24 16:13:26,284 INFO L226 Difference]: Without dead ends: 19 [2024-10-24 16:13:26,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2024-10-24 16:13:26,284 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:26,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 14 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:13:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-10-24 16:13:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-10-24 16:13:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 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) [2024-10-24 16:13:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-10-24 16:13:26,286 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2024-10-24 16:13:26,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:26,286 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-10-24 16:13:26,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:26,286 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-10-24 16:13:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-10-24 16:13:26,286 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:26,286 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:13:26,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 16:13:26,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:13:26,491 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:26,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:26,491 INFO L85 PathProgramCache]: Analyzing trace with hash -240968741, now seen corresponding path program 2 times [2024-10-24 16:13:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:26,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469693419] [2024-10-24 16:13:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:26,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469693419] [2024-10-24 16:13:26,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469693419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:13:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946210670] [2024-10-24 16:13:26,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 16:13:26,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:13:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:13:26,690 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) [2024-10-24 16:13:26,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 16:13:26,742 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 16:13:26,742 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:13:26,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 16:13:26,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:13:26,871 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 17 treesize of output 9 [2024-10-24 16:13:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:26,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:13:27,005 INFO L349 Elim1Store]: treesize reduction 4, result has 73.3 percent of original size [2024-10-24 16:13:27,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-10-24 16:13:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 16:13:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946210670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:13:27,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:13:27,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 19 [2024-10-24 16:13:27,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562876639] [2024-10-24 16:13:27,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:13:27,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-24 16:13:27,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-24 16:13:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-10-24 16:13:27,018 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:27,178 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2024-10-24 16:13:27,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-24 16:13:27,179 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-10-24 16:13:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:27,179 INFO L225 Difference]: With dead ends: 31 [2024-10-24 16:13:27,180 INFO L226 Difference]: Without dead ends: 31 [2024-10-24 16:13:27,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2024-10-24 16:13:27,181 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:27,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:13:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-24 16:13:27,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-24 16:13:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:27,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2024-10-24 16:13:27,184 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 18 [2024-10-24 16:13:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:27,185 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2024-10-24 16:13:27,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2024-10-24 16:13:27,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-24 16:13:27,186 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 16:13:27,186 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:13:27,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 16:13:27,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:13:27,391 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2024-10-24 16:13:27,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 16:13:27,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1044218811, now seen corresponding path program 3 times [2024-10-24 16:13:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 16:13:27,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97083244] [2024-10-24 16:13:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 16:13:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 16:13:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 16:13:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-24 16:13:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 16:13:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97083244] [2024-10-24 16:13:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97083244] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 16:13:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225748141] [2024-10-24 16:13:27,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 16:13:27,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 16:13:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 16:13:27,736 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) [2024-10-24 16:13:27,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 16:13:27,779 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-24 16:13:27,779 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 16:13:27,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 16:13:27,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 16:13:27,797 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 27 treesize of output 23 [2024-10-24 16:13:28,493 INFO L349 Elim1Store]: treesize reduction 78, result has 48.0 percent of original size [2024-10-24 16:13:28,494 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 157 treesize of output 146 [2024-10-24 16:13:28,731 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-24 16:13:28,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 16:13:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-24 16:13:37,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225748141] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 16:13:37,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 16:13:37,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-10-24 16:13:37,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067351519] [2024-10-24 16:13:37,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 16:13:37,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-24 16:13:37,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 16:13:37,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-24 16:13:37,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=510, Unknown=2, NotChecked=0, Total=600 [2024-10-24 16:13:37,098 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 16:13:37,392 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2024-10-24 16:13:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 16:13:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-10-24 16:13:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 16:13:37,393 INFO L225 Difference]: With dead ends: 29 [2024-10-24 16:13:37,393 INFO L226 Difference]: Without dead ends: 0 [2024-10-24 16:13:37,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=164, Invalid=764, Unknown=2, NotChecked=0, Total=930 [2024-10-24 16:13:37,394 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 16:13:37,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 16:13:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-24 16:13:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-24 16:13:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:37,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-24 16:13:37,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2024-10-24 16:13:37,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 16:13:37,396 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 16:13:37,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 16:13:37,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-24 16:13:37,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-24 16:13:37,398 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2024-10-24 16:13:37,398 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2024-10-24 16:13:37,398 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2024-10-24 16:13:37,398 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2024-10-24 16:13:37,398 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2024-10-24 16:13:37,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2024-10-24 16:13:37,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2024-10-24 16:13:37,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2024-10-24 16:13:37,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2024-10-24 16:13:37,399 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2024-10-24 16:13:37,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 16:13:37,599 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,SelfDestructingSolverStorable12 [2024-10-24 16:13:37,602 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 16:13:37,604 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 16:13:37,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:13:37 BoogieIcfgContainer [2024-10-24 16:13:37,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 16:13:37,606 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 16:13:37,606 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 16:13:37,606 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 16:13:37,606 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:13:22" (3/4) ... [2024-10-24 16:13:37,607 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-24 16:13:37,613 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-10-24 16:13:37,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-10-24 16:13:37,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-24 16:13:37,615 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-24 16:13:37,690 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-24 16:13:37,690 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-24 16:13:37,690 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 16:13:37,691 INFO L158 Benchmark]: Toolchain (without parser) took 15880.23ms. Allocated memory was 159.4MB in the beginning and 360.7MB in the end (delta: 201.3MB). Free memory was 88.8MB in the beginning and 193.0MB in the end (delta: -104.2MB). Peak memory consumption was 99.7MB. Max. memory is 16.1GB. [2024-10-24 16:13:37,691 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 16:13:37,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.52ms. Allocated memory is still 159.4MB. Free memory was 88.8MB in the beginning and 76.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 16:13:37,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.82ms. Allocated memory is still 159.4MB. Free memory was 76.4MB in the beginning and 75.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 16:13:37,691 INFO L158 Benchmark]: Boogie Preprocessor took 29.56ms. Allocated memory is still 159.4MB. Free memory was 75.0MB in the beginning and 73.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 16:13:37,692 INFO L158 Benchmark]: RCFGBuilder took 256.68ms. Allocated memory is still 159.4MB. Free memory was 73.0MB in the beginning and 57.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-24 16:13:37,692 INFO L158 Benchmark]: TraceAbstraction took 15268.91ms. Allocated memory was 159.4MB in the beginning and 360.7MB in the end (delta: 201.3MB). Free memory was 57.1MB in the beginning and 197.7MB in the end (delta: -140.6MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2024-10-24 16:13:37,692 INFO L158 Benchmark]: Witness Printer took 84.43ms. Allocated memory is still 360.7MB. Free memory was 197.7MB in the beginning and 193.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 16:13:37,695 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.52ms. Allocated memory is still 159.4MB. Free memory was 88.8MB in the beginning and 76.4MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.82ms. Allocated memory is still 159.4MB. Free memory was 76.4MB in the beginning and 75.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.56ms. Allocated memory is still 159.4MB. Free memory was 75.0MB in the beginning and 73.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.68ms. Allocated memory is still 159.4MB. Free memory was 73.0MB in the beginning and 57.7MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 15268.91ms. Allocated memory was 159.4MB in the beginning and 360.7MB in the end (delta: 201.3MB). Free memory was 57.1MB in the beginning and 197.7MB in the end (delta: -140.6MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. * Witness Printer took 84.43ms. Allocated memory is still 360.7MB. Free memory was 197.7MB in the beginning and 193.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 13, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 184 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 642 IncrementalHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 78 mSDtfsCounter, 642 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 248 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=12, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 196 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 244 ConstructedInterpolants, 4 QuantifiedInterpolants, 3737 SizeOfPredicates, 29 NumberOfNonLiveVariables, 511 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 22 InterpolantComputations, 9 PerfectInterpolantSequences, 266/406 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-24 16:13:37,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE