./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loop-acceleration/array_3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/loop-acceleration/array_3-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:32:31,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:32:31,865 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:32:31,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:32:31,873 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:32:31,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:32:31,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:32:31,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:32:31,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:32:31,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:32:31,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:32:31,906 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:32:31,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:32:31,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:32:31,908 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:32:31,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:32:31,911 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:32:31,914 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:32:31,914 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:32:31,914 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:32:31,914 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:32:31,915 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:32:31,916 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:32:31,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:32:31,917 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:32:31,917 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:32:31,917 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:32:31,917 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:32:31,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:32:31,918 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:32:31,918 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:32:31,918 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:32:31,918 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:32:31,919 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:32:31,919 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:32:31,920 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:32:31,920 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:32:31,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:32:31,921 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:32:31,921 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:32:31,921 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:32:31,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:32:31,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c5d8dd6c87f471ee77fd3b765c8ecabfaf01dd976e127275ea7c589f724f472 [2024-11-10 15:32:32,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:32:32,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:32:32,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:32:32,189 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:32:32,189 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:32:32,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array_3-1.i [2024-11-10 15:32:33,635 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:32:33,814 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:32:33,815 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array_3-1.i [2024-11-10 15:32:33,822 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/885629227/d8017be5f5534ef68a418facc9a5cf4d/FLAG03231c6e7 [2024-11-10 15:32:33,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/885629227/d8017be5f5534ef68a418facc9a5cf4d [2024-11-10 15:32:33,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:32:33,838 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:32:33,839 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:32:33,839 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:32:33,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:32:33,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:32:33" (1/1) ... [2024-11-10 15:32:33,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fcc512d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:33, skipping insertion in model container [2024-11-10 15:32:33,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:32:33" (1/1) ... [2024-11-10 15:32:33,862 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:32:34,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:32:34,104 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:32:34,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:32:34,140 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:32:34,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34 WrapperNode [2024-11-10 15:32:34,141 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:32:34,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:32:34,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:32:34,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:32:34,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,172 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2024-11-10 15:32:34,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:32:34,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:32:34,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:32:34,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:32:34,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,186 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,199 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 15:32:34,200 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,207 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,207 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,212 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:32:34,217 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:32:34,217 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:32:34,218 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:32:34,219 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (1/1) ... [2024-11-10 15:32:34,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:32:34,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:32:34,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 15:32:34,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 15:32:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:32:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:32:34,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:32:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-10 15:32:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 15:32:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 15:32:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:32:34,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:32:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 15:32:34,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 15:32:34,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:32:34,387 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:32:34,391 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:32:34,554 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-10 15:32:34,554 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:32:34,573 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:32:34,574 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:32:34,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:32:34 BoogieIcfgContainer [2024-11-10 15:32:34,574 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:32:34,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:32:34,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:32:34,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:32:34,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:32:33" (1/3) ... [2024-11-10 15:32:34,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be2f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:32:34, skipping insertion in model container [2024-11-10 15:32:34,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:32:34" (2/3) ... [2024-11-10 15:32:34,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be2f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:32:34, skipping insertion in model container [2024-11-10 15:32:34,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:32:34" (3/3) ... [2024-11-10 15:32:34,586 INFO L112 eAbstractionObserver]: Analyzing ICFG array_3-1.i [2024-11-10 15:32:34,602 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:32:34,602 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-10 15:32:34,653 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:32:34,661 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;@10c560ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:32:34,662 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 15:32:34,666 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-10 15:32:34,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:34,672 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 15:32:34,674 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:34,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:34,680 INFO L85 PathProgramCache]: Analyzing trace with hash 64859934, now seen corresponding path program 1 times [2024-11-10 15:32:34,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:34,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871060194] [2024-11-10 15:32:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:34,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:34,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871060194] [2024-11-10 15:32:34,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871060194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:32:34,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:32:34,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:32:34,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459585803] [2024-11-10 15:32:34,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:32:34,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:32:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:32:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:32:34,962 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 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 2.5) internal successors, (5), 3 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) [2024-11-10 15:32:34,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:35,001 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2024-11-10 15:32:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:32:35,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2024-11-10 15:32:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:35,009 INFO L225 Difference]: With dead ends: 26 [2024-11-10 15:32:35,009 INFO L226 Difference]: Without dead ends: 23 [2024-11-10 15:32:35,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:32:35,013 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 16 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:35,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 25 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:32:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-10 15:32:35,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-10 15:32:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-10 15:32:35,040 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 5 [2024-11-10 15:32:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:35,041 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-10 15:32:35,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-11-10 15:32:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-10 15:32:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-10 15:32:35,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:35,042 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 15:32:35,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:32:35,042 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:35,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:35,043 INFO L85 PathProgramCache]: Analyzing trace with hash 64859935, now seen corresponding path program 1 times [2024-11-10 15:32:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180374704] [2024-11-10 15:32:35,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:35,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:35,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:35,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180374704] [2024-11-10 15:32:35,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180374704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:32:35,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:32:35,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:32:35,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302401350] [2024-11-10 15:32:35,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:32:35,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:32:35,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:35,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:32:35,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:32:35,181 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-11-10 15:32:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:35,237 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2024-11-10 15:32:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:32:35,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2024-11-10 15:32:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:35,239 INFO L225 Difference]: With dead ends: 27 [2024-11-10 15:32:35,239 INFO L226 Difference]: Without dead ends: 27 [2024-11-10 15:32:35,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:32:35,241 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:35,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:32:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-10 15:32:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-10 15:32:35,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-10 15:32:35,251 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 5 [2024-11-10 15:32:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:35,251 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-10 15:32:35,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2024-11-10 15:32:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-10 15:32:35,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-10 15:32:35,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:35,254 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-11-10 15:32:35,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:32:35,254 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:35,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1897113153, now seen corresponding path program 1 times [2024-11-10 15:32:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:35,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311517182] [2024-11-10 15:32:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:35,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:35,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311517182] [2024-11-10 15:32:35,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311517182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:32:35,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794772788] [2024-11-10 15:32:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:35,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:35,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:32:35,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:32:35,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:32:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:35,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 15:32:35,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:32:35,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:32:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:35,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:32:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:35,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794772788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:32:35,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:32:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-10 15:32:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369259699] [2024-11-10 15:32:35,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:32:35,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 15:32:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 15:32:35,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:32:35,881 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:36,008 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-11-10 15:32:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 15:32:36,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-10 15:32:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:36,011 INFO L225 Difference]: With dead ends: 36 [2024-11-10 15:32:36,011 INFO L226 Difference]: Without dead ends: 36 [2024-11-10 15:32:36,012 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-10 15:32:36,013 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:36,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 73 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:32:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-10 15:32:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2024-11-10 15:32:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:36,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-10 15:32:36,022 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 9 [2024-11-10 15:32:36,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:36,023 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-10 15:32:36,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:36,023 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-10 15:32:36,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-10 15:32:36,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:36,026 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-10 15:32:36,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 15:32:36,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:36,227 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:36,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -2099150044, now seen corresponding path program 1 times [2024-11-10 15:32:36,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:36,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119397306] [2024-11-10 15:32:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:36,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-10 15:32:36,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:36,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119397306] [2024-11-10 15:32:36,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119397306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:32:36,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494089031] [2024-11-10 15:32:36,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:36,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:36,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:32:36,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:32:36,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:32:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:36,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 15:32:36,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:32:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:36,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:32:36,629 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:36,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494089031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:32:36,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:32:36,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 15 [2024-11-10 15:32:36,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073558788] [2024-11-10 15:32:36,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:32:36,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 15:32:36,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:36,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 15:32:36,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:32:36,636 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:36,935 INFO L93 Difference]: Finished difference Result 105 states and 124 transitions. [2024-11-10 15:32:36,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 15:32:36,936 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-10 15:32:36,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:36,938 INFO L225 Difference]: With dead ends: 105 [2024-11-10 15:32:36,939 INFO L226 Difference]: Without dead ends: 105 [2024-11-10 15:32:36,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2024-11-10 15:32:36,940 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 169 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:36,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 74 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:32:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-10 15:32:36,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2024-11-10 15:32:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 95 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2024-11-10 15:32:36,956 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 23 [2024-11-10 15:32:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:36,956 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2024-11-10 15:32:36,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2024-11-10 15:32:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-10 15:32:36,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:36,958 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:32:36,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 15:32:37,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-10 15:32:37,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:37,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:37,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1377598187, now seen corresponding path program 1 times [2024-11-10 15:32:37,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:37,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703134993] [2024-11-10 15:32:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:37,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:32:37,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:37,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703134993] [2024-11-10 15:32:37,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703134993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:32:37,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625373443] [2024-11-10 15:32:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:37,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:37,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:32:37,452 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:32:37,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:32:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:37,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 15:32:37,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:32:37,629 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:32:37,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:32:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:32:37,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625373443] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:32:37,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:32:37,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-10 15:32:37,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089697418] [2024-11-10 15:32:37,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:32:37,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-10 15:32:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-10 15:32:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-10 15:32:37,902 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:38,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:38,125 INFO L93 Difference]: Finished difference Result 213 states and 256 transitions. [2024-11-10 15:32:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-10 15:32:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-10 15:32:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:38,129 INFO L225 Difference]: With dead ends: 213 [2024-11-10 15:32:38,130 INFO L226 Difference]: Without dead ends: 213 [2024-11-10 15:32:38,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-10 15:32:38,131 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 197 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:38,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 137 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:32:38,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-10 15:32:38,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 192. [2024-11-10 15:32:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 1.2433862433862435) internal successors, (235), 191 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:38,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 235 transitions. [2024-11-10 15:32:38,152 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 235 transitions. Word has length 51 [2024-11-10 15:32:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:38,152 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 235 transitions. [2024-11-10 15:32:38,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.92) internal successors, (98), 25 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:38,153 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 235 transitions. [2024-11-10 15:32:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-10 15:32:38,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:38,155 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:32:38,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 15:32:38,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:38,356 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:38,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash -496073597, now seen corresponding path program 2 times [2024-11-10 15:32:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612824235] [2024-11-10 15:32:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:32:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612824235] [2024-11-10 15:32:39,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612824235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:32:39,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201689746] [2024-11-10 15:32:39,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:32:39,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:39,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:32:39,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:32:39,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:32:39,234 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:32:39,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:32:39,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 15:32:39,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:32:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:32:39,372 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:32:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:32:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201689746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:32:40,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:32:40,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-10 15:32:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090205199] [2024-11-10 15:32:40,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:32:40,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-10 15:32:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-10 15:32:40,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 15:32:40,276 INFO L87 Difference]: Start difference. First operand 192 states and 235 transitions. Second operand has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:40,826 INFO L93 Difference]: Finished difference Result 429 states and 520 transitions. [2024-11-10 15:32:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-10 15:32:40,826 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 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 99 [2024-11-10 15:32:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:40,829 INFO L225 Difference]: With dead ends: 429 [2024-11-10 15:32:40,829 INFO L226 Difference]: Without dead ends: 429 [2024-11-10 15:32:40,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-10 15:32:40,830 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 589 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:40,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 233 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 15:32:40,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-10 15:32:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 384. [2024-11-10 15:32:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 381 states have (on average 1.246719160104987) internal successors, (475), 383 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 475 transitions. [2024-11-10 15:32:40,849 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 475 transitions. Word has length 99 [2024-11-10 15:32:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:40,850 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 475 transitions. [2024-11-10 15:32:40,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9591836734693877) internal successors, (194), 49 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 475 transitions. [2024-11-10 15:32:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-10 15:32:40,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:40,857 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:32:40,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 15:32:41,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:41,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:41,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1422583731, now seen corresponding path program 3 times [2024-11-10 15:32:41,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:41,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5899558] [2024-11-10 15:32:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:41,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 4232 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 15:32:43,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5899558] [2024-11-10 15:32:43,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5899558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:32:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627865876] [2024-11-10 15:32:43,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 15:32:43,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:43,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:32:43,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:32:43,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:32:43,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 15:32:43,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:32:43,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-10 15:32:43,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:32:43,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:32:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-10 15:32:44,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:32:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-10 15:32:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627865876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:32:44,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:32:44,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 4, 4] total 55 [2024-11-10 15:32:44,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672080354] [2024-11-10 15:32:44,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:32:44,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-10 15:32:44,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:44,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-10 15:32:44,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1290, Invalid=1680, Unknown=0, NotChecked=0, Total=2970 [2024-11-10 15:32:44,968 INFO L87 Difference]: Start difference. First operand 384 states and 475 transitions. Second operand has 55 states, 55 states have (on average 4.0) internal successors, (220), 55 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:47,216 INFO L93 Difference]: Finished difference Result 456 states and 509 transitions. [2024-11-10 15:32:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-10 15:32:47,216 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 4.0) internal successors, (220), 55 states have internal predecessors, (220), 0 states have call successors, (0), 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 195 [2024-11-10 15:32:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:47,218 INFO L225 Difference]: With dead ends: 456 [2024-11-10 15:32:47,218 INFO L226 Difference]: Without dead ends: 456 [2024-11-10 15:32:47,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1551 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3781, Invalid=6521, Unknown=0, NotChecked=0, Total=10302 [2024-11-10 15:32:47,222 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1936 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:47,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 267 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:32:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-10 15:32:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 395. [2024-11-10 15:32:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 393 states have (on average 1.1297709923664123) internal successors, (444), 394 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 444 transitions. [2024-11-10 15:32:47,236 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 444 transitions. Word has length 195 [2024-11-10 15:32:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:47,237 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 444 transitions. [2024-11-10 15:32:47,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 4.0) internal successors, (220), 55 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:47,237 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 444 transitions. [2024-11-10 15:32:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-10 15:32:47,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:47,240 INFO L215 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:32:47,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 15:32:47,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:47,445 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:47,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2064955184, now seen corresponding path program 1 times [2024-11-10 15:32:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:47,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713495496] [2024-11-10 15:32:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2024-11-10 15:32:47,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713495496] [2024-11-10 15:32:47,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713495496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:32:47,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:32:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 15:32:47,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119684992] [2024-11-10 15:32:47,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:32:47,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:32:47,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:47,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:32:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:32:47,788 INFO L87 Difference]: Start difference. First operand 395 states and 444 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:47,809 INFO L93 Difference]: Finished difference Result 391 states and 440 transitions. [2024-11-10 15:32:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:32:47,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 201 [2024-11-10 15:32:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:47,811 INFO L225 Difference]: With dead ends: 391 [2024-11-10 15:32:47,811 INFO L226 Difference]: Without dead ends: 391 [2024-11-10 15:32:47,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:32:47,812 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:47,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:32:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-10 15:32:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2024-11-10 15:32:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.1282051282051282) internal successors, (440), 390 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 440 transitions. [2024-11-10 15:32:47,827 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 440 transitions. Word has length 201 [2024-11-10 15:32:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:47,828 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 440 transitions. [2024-11-10 15:32:47,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 440 transitions. [2024-11-10 15:32:47,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-10 15:32:47,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:47,834 INFO L215 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:32:47,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 15:32:47,834 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:47,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:47,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2064978025, now seen corresponding path program 1 times [2024-11-10 15:32:47,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:47,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895880195] [2024-11-10 15:32:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:32:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895880195] [2024-11-10 15:32:49,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895880195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:32:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267707183] [2024-11-10 15:32:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:49,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:32:49,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:32:49,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:32:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:32:50,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-10 15:32:50,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:32:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:50,322 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:32:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4418 backedges. 0 proven. 4418 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:32:53,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267707183] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:32:53,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:32:53,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 99 [2024-11-10 15:32:53,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864712749] [2024-11-10 15:32:53,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:32:53,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-10 15:32:53,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:32:53,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-10 15:32:53,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2024-11-10 15:32:53,079 INFO L87 Difference]: Start difference. First operand 391 states and 440 transitions. Second operand has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:54,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:32:54,808 INFO L93 Difference]: Finished difference Result 874 states and 971 transitions. [2024-11-10 15:32:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-10 15:32:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 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 201 [2024-11-10 15:32:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:32:54,812 INFO L225 Difference]: With dead ends: 874 [2024-11-10 15:32:54,812 INFO L226 Difference]: Without dead ends: 874 [2024-11-10 15:32:54,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2024-11-10 15:32:54,815 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1385 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-10 15:32:54,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 448 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-10 15:32:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-10 15:32:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 779. [2024-11-10 15:32:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 1.1259640102827764) internal successors, (876), 778 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 876 transitions. [2024-11-10 15:32:54,826 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 876 transitions. Word has length 201 [2024-11-10 15:32:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:32:54,826 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 876 transitions. [2024-11-10 15:32:54,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 4.01010101010101) internal successors, (397), 99 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:32:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 876 transitions. [2024-11-10 15:32:54,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-10 15:32:54,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:32:54,832 INFO L215 NwaCegarLoop]: trace histogram [97, 96, 96, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:32:54,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 15:32:55,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:32:55,033 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2024-11-10 15:32:55,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:32:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2023621867, now seen corresponding path program 2 times [2024-11-10 15:32:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:32:55,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014592983] [2024-11-10 15:32:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:32:55,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:32:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:33:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 0 proven. 18432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:33:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:33:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014592983] [2024-11-10 15:33:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014592983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:33:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756875769] [2024-11-10 15:33:01,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:33:01,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:33:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:33:01,675 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:33:01,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 15:33:01,835 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 15:33:01,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:33:01,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 15:33:01,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:33:03,076 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#A~0#1.base_18| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#A~0#1.base_18| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#A~0#1.base_18|) 0))) is different from true [2024-11-10 15:33:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18432 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18432 trivial. 0 not checked. [2024-11-10 15:33:03,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:33:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756875769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:33:03,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 15:33:03,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [99] total 101 [2024-11-10 15:33:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206899294] [2024-11-10 15:33:03,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:33:03,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:33:03,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:33:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:33:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4855, Invalid=5048, Unknown=1, NotChecked=196, Total=10100 [2024-11-10 15:33:03,102 INFO L87 Difference]: Start difference. First operand 779 states and 876 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:33:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:33:03,118 INFO L93 Difference]: Finished difference Result 778 states and 875 transitions. [2024-11-10 15:33:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:33:03,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 397 [2024-11-10 15:33:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:33:03,119 INFO L225 Difference]: With dead ends: 778 [2024-11-10 15:33:03,119 INFO L226 Difference]: Without dead ends: 0 [2024-11-10 15:33:03,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4855, Invalid=5048, Unknown=1, NotChecked=196, Total=10100 [2024-11-10 15:33:03,126 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:33:03,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2024-11-10 15:33:03,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-10 15:33:03,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-10 15:33:03,127 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) [2024-11-10 15:33:03,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-10 15:33:03,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 397 [2024-11-10 15:33:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:33:03,127 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-10 15:33:03,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:33:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-10 15:33:03,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-10 15:33:03,133 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-11-10 15:33:03,134 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-10 15:33:03,134 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2024-11-10 15:33:03,134 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2024-11-10 15:33:03,134 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 6 remaining) [2024-11-10 15:33:03,137 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 6 remaining) [2024-11-10 15:33:03,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 15:33:03,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:33:03,341 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1] [2024-11-10 15:33:03,343 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 15:33:03,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:33:03 BoogieIcfgContainer [2024-11-10 15:33:03,346 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 15:33:03,347 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 15:33:03,347 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 15:33:03,347 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 15:33:03,348 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:32:34" (3/4) ... [2024-11-10 15:33:03,350 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 15:33:03,358 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-10 15:33:03,359 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-10 15:33:03,359 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-10 15:33:03,359 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-10 15:33:03,449 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 15:33:03,450 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 15:33:03,450 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 15:33:03,451 INFO L158 Benchmark]: Toolchain (without parser) took 29613.03ms. Allocated memory was 167.8MB in the beginning and 612.4MB in the end (delta: 444.6MB). Free memory was 103.5MB in the beginning and 433.0MB in the end (delta: -329.5MB). Peak memory consumption was 114.9MB. Max. memory is 16.1GB. [2024-11-10 15:33:03,451 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 15:33:03,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.36ms. Allocated memory is still 167.8MB. Free memory was 103.1MB in the beginning and 138.7MB in the end (delta: -35.6MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2024-11-10 15:33:03,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.51ms. Allocated memory is still 167.8MB. Free memory was 138.7MB in the beginning and 137.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 15:33:03,452 INFO L158 Benchmark]: Boogie Preprocessor took 41.45ms. Allocated memory is still 167.8MB. Free memory was 137.3MB in the beginning and 135.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 15:33:03,452 INFO L158 Benchmark]: IcfgBuilder took 357.33ms. Allocated memory is still 167.8MB. Free memory was 135.9MB in the beginning and 123.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 15:33:03,452 INFO L158 Benchmark]: TraceAbstraction took 28769.24ms. Allocated memory was 167.8MB in the beginning and 612.4MB in the end (delta: 444.6MB). Free memory was 122.7MB in the beginning and 438.2MB in the end (delta: -315.6MB). Peak memory consumption was 131.1MB. Max. memory is 16.1GB. [2024-11-10 15:33:03,452 INFO L158 Benchmark]: Witness Printer took 103.46ms. Allocated memory is still 612.4MB. Free memory was 437.2MB in the beginning and 433.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 15:33:03,455 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.36ms. Allocated memory is still 167.8MB. Free memory was 103.1MB in the beginning and 138.7MB in the end (delta: -35.6MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.51ms. Allocated memory is still 167.8MB. Free memory was 138.7MB in the beginning and 137.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.45ms. Allocated memory is still 167.8MB. Free memory was 137.3MB in the beginning and 135.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 357.33ms. Allocated memory is still 167.8MB. Free memory was 135.9MB in the beginning and 123.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 28769.24ms. Allocated memory was 167.8MB in the beginning and 612.4MB in the end (delta: 444.6MB). Free memory was 122.7MB in the beginning and 438.2MB in the end (delta: -315.6MB). Peak memory consumption was 131.1MB. Max. memory is 16.1GB. * Witness Printer took 103.46ms. Allocated memory is still 612.4MB. Free memory was 437.2MB in the beginning and 433.0MB in the end (delta: 4.2MB). 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: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 28.7s, OverallIterations: 10, TraceHistogramMax: 97, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4314 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4314 mSDsluCounter, 1331 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 17 IncrementalHoareTripleChecker+Unchecked, 1165 mSDsCounter, 1039 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1397 IncrementalHoareTripleChecker+Invalid, 2453 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1039 mSolverCounterUnsat, 166 mSDtfsCounter, 1397 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1851 GetRequests, 1450 SyntacticMatches, 0 SemanticMatches, 401 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2042 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=779occurred in iteration=9, InterpolantAutomatonStates: 257, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 232 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 20.1s InterpolantComputationTime, 2161 NumberOfCodeBlocks, 1597 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 2716 ConstructedInterpolants, 2 QuantifiedInterpolants, 15416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1522 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 23 InterpolantComputations, 4 PerfectInterpolantSequences, 31346/70859 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 15:33:03,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE