./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/termination-memory-alloca/java_Sequence-alloca.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/termination-memory-alloca/java_Sequence-alloca.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash bbfd7e02902f4055d7e34f3b5ba23b303c6804a0ba382312ba438960dae6647b --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:28:30,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:28:30,076 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2025-04-29 11:28:30,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:28:30,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:28:30,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:28:30,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:28:30,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:28:30,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:28:30,094 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:28:30,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:28:30,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:28:30,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:28:30,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:28:30,094 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:28:30,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:28:30,095 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:28:30,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:28:30,095 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:28:30,096 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:28:30,096 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbfd7e02902f4055d7e34f3b5ba23b303c6804a0ba382312ba438960dae6647b [2025-04-29 11:28:30,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:28:30,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:28:30,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:28:30,318 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:28:30,318 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:28:30,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-memory-alloca/java_Sequence-alloca.c [2025-04-29 11:28:31,535 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0587ccc5/585d030f77c24605a7923db33023a0f6/FLAG2046e35df [2025-04-29 11:28:31,721 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:28:31,722 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-memory-alloca/java_Sequence-alloca.c [2025-04-29 11:28:31,723 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:28:31,723 WARN L117 ultiparseSymbolTable]: System include alloca.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:28:31,727 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0587ccc5/585d030f77c24605a7923db33023a0f6/FLAG2046e35df [2025-04-29 11:28:32,537 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0587ccc5/585d030f77c24605a7923db33023a0f6 [2025-04-29 11:28:32,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:28:32,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:28:32,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:28:32,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:28:32,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:28:32,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd22822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32, skipping insertion in model container [2025-04-29 11:28:32,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,553 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:28:32,682 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:28:32,692 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:28:32,707 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:28:32,715 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:28:32,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32 WrapperNode [2025-04-29 11:28:32,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:28:32,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:28:32,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:28:32,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:28:32,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,742 INFO L138 Inliner]: procedures = 7, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-04-29 11:28:32,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:28:32,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:28:32,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:28:32,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:28:32,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,759 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [6, 4, 4]. 43 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 7 writes are split as follows [3, 2, 2]. [2025-04-29 11:28:32,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,762 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:28:32,773 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:28:32,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:28:32,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:28:32,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (1/1) ... [2025-04-29 11:28:32,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:28:32,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:28:32,797 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) [2025-04-29 11:28:32,799 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 [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:28:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-29 11:28:32,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-29 11:28:32,858 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:28:32,859 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:28:33,016 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2025-04-29 11:28:33,017 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:28:33,024 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:28:33,025 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-04-29 11:28:33,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:28:33 BoogieIcfgContainer [2025-04-29 11:28:33,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:28:33,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:28:33,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:28:33,030 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:28:33,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:28:32" (1/3) ... [2025-04-29 11:28:33,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec2dffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:28:33, skipping insertion in model container [2025-04-29 11:28:33,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:28:32" (2/3) ... [2025-04-29 11:28:33,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec2dffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:28:33, skipping insertion in model container [2025-04-29 11:28:33,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:28:33" (3/3) ... [2025-04-29 11:28:33,033 INFO L128 eAbstractionObserver]: Analyzing ICFG java_Sequence-alloca.c [2025-04-29 11:28:33,043 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:28:33,046 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG java_Sequence-alloca.c that has 1 procedures, 54 locations, 57 edges, 1 initial locations, 2 loop locations, and 29 error locations. [2025-04-29 11:28:33,081 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:28:33,090 INFO L340 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;@40c05eb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:28:33,090 INFO L341 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-04-29 11:28:33,094 INFO L278 IsEmpty]: Start isEmpty. Operand has 54 states, 24 states have (on average 2.375) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,097 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-29 11:28:33,097 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:33,098 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-29 11:28:33,098 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:33,101 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:33,102 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2025-04-29 11:28:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:33,107 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917546511] [2025-04-29 11:28:33,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:33,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:33,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-29 11:28:33,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-29 11:28:33,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:33,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:33,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:33,291 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917546511] [2025-04-29 11:28:33,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917546511] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:33,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:28:33,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:28:33,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932035319] [2025-04-29 11:28:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:33,297 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:28:33,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:33,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:28:33,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:28:33,317 INFO L87 Difference]: Start difference. First operand has 54 states, 24 states have (on average 2.375) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:33,392 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2025-04-29 11:28:33,393 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:28:33,394 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-04-29 11:28:33,394 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:33,397 INFO L225 Difference]: With dead ends: 48 [2025-04-29 11:28:33,397 INFO L226 Difference]: Without dead ends: 46 [2025-04-29 11:28:33,398 INFO L436 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 [2025-04-29 11:28:33,400 INFO L437 NwaCegarLoop]: 21 mSDtfsCounter, 36 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:33,400 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-29 11:28:33,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-04-29 11:28:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-04-29 11:28:33,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2025-04-29 11:28:33,421 INFO L79 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 3 [2025-04-29 11:28:33,421 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:33,421 INFO L485 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2025-04-29 11:28:33,421 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,421 INFO L278 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2025-04-29 11:28:33,421 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-04-29 11:28:33,421 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:33,422 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-04-29 11:28:33,422 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:28:33,422 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:33,422 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:33,422 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2025-04-29 11:28:33,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:33,423 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945074336] [2025-04-29 11:28:33,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:33,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:33,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-04-29 11:28:33,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-04-29 11:28:33,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:33,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:33,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:33,521 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945074336] [2025-04-29 11:28:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945074336] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:28:33,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:28:33,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757172422] [2025-04-29 11:28:33,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:33,522 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:28:33,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:33,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:28:33,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:28:33,523 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:33,569 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2025-04-29 11:28:33,569 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:28:33,570 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-04-29 11:28:33,570 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:33,570 INFO L225 Difference]: With dead ends: 40 [2025-04-29 11:28:33,570 INFO L226 Difference]: Without dead ends: 40 [2025-04-29 11:28:33,570 INFO L436 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 [2025-04-29 11:28:33,571 INFO L437 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:33,571 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-04-29 11:28:33,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-04-29 11:28:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2025-04-29 11:28:33,573 INFO L79 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 3 [2025-04-29 11:28:33,574 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:33,574 INFO L485 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2025-04-29 11:28:33,574 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,574 INFO L278 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2025-04-29 11:28:33,574 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-29 11:28:33,574 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:33,574 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-29 11:28:33,574 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:28:33,574 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:33,575 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash 925543, now seen corresponding path program 1 times [2025-04-29 11:28:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:33,575 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904425917] [2025-04-29 11:28:33,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:33,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:33,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-29 11:28:33,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-29 11:28:33,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:33,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:33,694 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904425917] [2025-04-29 11:28:33,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904425917] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:33,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:28:33,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:28:33,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348298135] [2025-04-29 11:28:33,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:33,695 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:28:33,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:33,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:28:33,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:28:33,695 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:33,737 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2025-04-29 11:28:33,738 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:28:33,738 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-04-29 11:28:33,738 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:33,739 INFO L225 Difference]: With dead ends: 36 [2025-04-29 11:28:33,739 INFO L226 Difference]: Without dead ends: 36 [2025-04-29 11:28:33,739 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:28:33,740 INFO L437 NwaCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:33,740 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 14 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-04-29 11:28:33,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-04-29 11:28:33,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.608695652173913) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2025-04-29 11:28:33,742 INFO L79 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 4 [2025-04-29 11:28:33,742 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:33,742 INFO L485 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2025-04-29 11:28:33,742 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,742 INFO L278 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2025-04-29 11:28:33,743 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-04-29 11:28:33,743 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:33,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-04-29 11:28:33,743 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:28:33,743 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:33,743 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:33,743 INFO L85 PathProgramCache]: Analyzing trace with hash 925544, now seen corresponding path program 1 times [2025-04-29 11:28:33,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:33,743 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863676741] [2025-04-29 11:28:33,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:33,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:33,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-04-29 11:28:33,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-04-29 11:28:33,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:33,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:33,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:33,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:33,899 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863676741] [2025-04-29 11:28:33,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863676741] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:33,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:28:33,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:28:33,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174900403] [2025-04-29 11:28:33,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:33,900 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:28:33,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:33,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:28:33,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:28:33,900 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:33,928 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2025-04-29 11:28:33,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:28:33,929 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-04-29 11:28:33,929 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:33,929 INFO L225 Difference]: With dead ends: 32 [2025-04-29 11:28:33,929 INFO L226 Difference]: Without dead ends: 32 [2025-04-29 11:28:33,929 INFO L436 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 [2025-04-29 11:28:33,930 INFO L437 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:33,930 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 16 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-04-29 11:28:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-04-29 11:28:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.434782608695652) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2025-04-29 11:28:33,933 INFO L79 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 4 [2025-04-29 11:28:33,933 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:33,934 INFO L485 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2025-04-29 11:28:33,934 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:33,934 INFO L278 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2025-04-29 11:28:33,934 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-29 11:28:33,934 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:33,934 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:33,934 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:28:33,934 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:33,935 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:33,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1803030106, now seen corresponding path program 1 times [2025-04-29 11:28:33,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:33,935 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017912694] [2025-04-29 11:28:33,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:33,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:33,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:28:33,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:28:33,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:33,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:34,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:34,004 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017912694] [2025-04-29 11:28:34,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017912694] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:34,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:28:34,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:28:34,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448483374] [2025-04-29 11:28:34,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:34,004 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:28:34,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:34,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:28:34,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:28:34,006 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:34,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:34,029 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2025-04-29 11:28:34,030 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:28:34,030 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-04-29 11:28:34,030 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:34,030 INFO L225 Difference]: With dead ends: 39 [2025-04-29 11:28:34,030 INFO L226 Difference]: Without dead ends: 39 [2025-04-29 11:28:34,031 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:28:34,031 INFO L437 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:34,032 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-04-29 11:28:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2025-04-29 11:28:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.4) internal successors, (35), 33 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) [2025-04-29 11:28:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2025-04-29 11:28:34,037 INFO L79 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 7 [2025-04-29 11:28:34,037 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:34,037 INFO L485 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2025-04-29 11:28:34,037 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:34,037 INFO L278 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2025-04-29 11:28:34,037 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-04-29 11:28:34,037 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:34,037 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:34,037 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-29 11:28:34,037 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:34,038 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:34,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2104444884, now seen corresponding path program 1 times [2025-04-29 11:28:34,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:34,038 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055106256] [2025-04-29 11:28:34,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:34,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:34,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-29 11:28:34,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-29 11:28:34,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:34,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:34,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:34,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:34,153 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055106256] [2025-04-29 11:28:34,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055106256] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:28:34,153 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727214223] [2025-04-29 11:28:34,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:34,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:28:34,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:28:34,156 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) [2025-04-29 11:28:34,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-29 11:28:34,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-04-29 11:28:34,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-04-29 11:28:34,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:34,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:34,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-04-29 11:28:34,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:28:34,234 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-29 11:28:34,301 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:34,308 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-04-29 11:28:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:34,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:28:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:34,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727214223] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:28:34,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:28:34,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-04-29 11:28:34,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428604108] [2025-04-29 11:28:34,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:28:34,368 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-04-29 11:28:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:34,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-04-29 11:28:34,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2025-04-29 11:28:34,369 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:34,490 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2025-04-29 11:28:34,491 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-04-29 11:28:34,491 INFO L79 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-04-29 11:28:34,491 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:34,491 INFO L225 Difference]: With dead ends: 55 [2025-04-29 11:28:34,491 INFO L226 Difference]: Without dead ends: 55 [2025-04-29 11:28:34,492 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2025-04-29 11:28:34,492 INFO L437 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:34,492 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 269 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-04-29 11:28:34,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2025-04-29 11:28:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2025-04-29 11:28:34,496 INFO L79 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 15 [2025-04-29 11:28:34,496 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:34,496 INFO L485 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2025-04-29 11:28:34,496 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:34,496 INFO L278 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2025-04-29 11:28:34,496 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-29 11:28:34,496 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:34,496 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:34,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-29 11:28:34,698 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-04-29 11:28:34,699 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:34,699 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash 85079504, now seen corresponding path program 2 times [2025-04-29 11:28:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:34,699 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099107817] [2025-04-29 11:28:34,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:28:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:34,712 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-04-29 11:28:34,718 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 31 statements. [2025-04-29 11:28:34,718 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:28:34,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-04-29 11:28:34,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:34,765 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099107817] [2025-04-29 11:28:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099107817] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:34,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:28:34,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:28:34,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571976443] [2025-04-29 11:28:34,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:34,766 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:28:34,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:34,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:28:34,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:28:34,766 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:34,794 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2025-04-29 11:28:34,794 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:28:34,795 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-04-29 11:28:34,795 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:34,795 INFO L225 Difference]: With dead ends: 46 [2025-04-29 11:28:34,795 INFO L226 Difference]: Without dead ends: 46 [2025-04-29 11:28:34,795 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:28:34,796 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:34,796 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 10 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-04-29 11:28:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-04-29 11:28:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.146341463414634) internal successors, (47), 45 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2025-04-29 11:28:34,803 INFO L79 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 31 [2025-04-29 11:28:34,803 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:34,803 INFO L485 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2025-04-29 11:28:34,803 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:34,803 INFO L278 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2025-04-29 11:28:34,803 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-04-29 11:28:34,803 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:34,804 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:34,804 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-29 11:28:34,804 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:34,804 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:34,804 INFO L85 PathProgramCache]: Analyzing trace with hash 85079505, now seen corresponding path program 1 times [2025-04-29 11:28:34,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:34,804 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269234955] [2025-04-29 11:28:34,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:34,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-29 11:28:34,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-29 11:28:34,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:34,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:35,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:35,176 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269234955] [2025-04-29 11:28:35,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269234955] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:28:35,176 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055623709] [2025-04-29 11:28:35,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:35,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:28:35,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:28:35,179 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) [2025-04-29 11:28:35,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-04-29 11:28:35,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-04-29 11:28:35,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-04-29 11:28:35,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:35,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:35,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-04-29 11:28:35,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:28:35,245 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-29 11:28:35,299 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:35,351 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:35,412 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:35,420 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-04-29 11:28:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:35,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:28:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:35,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055623709] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:28:35,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:28:35,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2025-04-29 11:28:35,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369478062] [2025-04-29 11:28:35,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:28:35,591 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-04-29 11:28:35,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:35,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-04-29 11:28:35,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=780, Unknown=0, NotChecked=0, Total=992 [2025-04-29 11:28:35,592 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:35,813 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2025-04-29 11:28:35,814 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-04-29 11:28:35,814 INFO L79 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-04-29 11:28:35,814 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:35,814 INFO L225 Difference]: With dead ends: 83 [2025-04-29 11:28:35,814 INFO L226 Difference]: Without dead ends: 83 [2025-04-29 11:28:35,815 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1675, Unknown=0, NotChecked=0, Total=2070 [2025-04-29 11:28:35,815 INFO L437 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:35,816 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 301 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-29 11:28:35,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-04-29 11:28:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2025-04-29 11:28:35,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.082191780821918) internal successors, (79), 77 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:35,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2025-04-29 11:28:35,823 INFO L79 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 31 [2025-04-29 11:28:35,823 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:35,823 INFO L485 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2025-04-29 11:28:35,823 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.3125) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:35,823 INFO L278 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2025-04-29 11:28:35,824 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-04-29 11:28:35,824 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:35,824 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:35,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-04-29 11:28:36,025 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-04-29 11:28:36,025 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:36,025 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:36,025 INFO L85 PathProgramCache]: Analyzing trace with hash 927848729, now seen corresponding path program 2 times [2025-04-29 11:28:36,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:36,025 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568910271] [2025-04-29 11:28:36,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:28:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:36,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 63 statements into 2 equivalence classes. [2025-04-29 11:28:36,043 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 63 statements. [2025-04-29 11:28:36,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:28:36,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-04-29 11:28:36,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:36,086 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568910271] [2025-04-29 11:28:36,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568910271] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:36,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:28:36,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 11:28:36,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792473912] [2025-04-29 11:28:36,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:36,087 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 11:28:36,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:36,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 11:28:36,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 11:28:36,087 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:36,105 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2025-04-29 11:28:36,105 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 11:28:36,105 INFO L79 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-04-29 11:28:36,105 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:36,105 INFO L225 Difference]: With dead ends: 74 [2025-04-29 11:28:36,106 INFO L226 Difference]: Without dead ends: 74 [2025-04-29 11:28:36,106 INFO L436 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 [2025-04-29 11:28:36,106 INFO L437 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:36,106 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:36,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-04-29 11:28:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-04-29 11:28:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2025-04-29 11:28:36,108 INFO L79 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 63 [2025-04-29 11:28:36,110 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:36,110 INFO L485 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2025-04-29 11:28:36,110 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:36,110 INFO L278 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2025-04-29 11:28:36,113 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-04-29 11:28:36,113 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:36,113 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:36,113 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-04-29 11:28:36,113 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:36,113 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:36,113 INFO L85 PathProgramCache]: Analyzing trace with hash -969571735, now seen corresponding path program 1 times [2025-04-29 11:28:36,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:36,113 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689814335] [2025-04-29 11:28:36,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:36,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:36,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-04-29 11:28:36,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-04-29 11:28:36,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:36,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:28:37,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:37,107 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689814335] [2025-04-29 11:28:37,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689814335] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:28:37,107 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273743226] [2025-04-29 11:28:37,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:37,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:28:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:28:37,109 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) [2025-04-29 11:28:37,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-04-29 11:28:37,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-04-29 11:28:37,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-04-29 11:28:37,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:37,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:37,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-04-29 11:28:37,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:28:37,203 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-04-29 11:28:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-04-29 11:28:37,232 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-04-29 11:28:37,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273743226] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:37,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-04-29 11:28:37,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [29] total 31 [2025-04-29 11:28:37,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035118283] [2025-04-29 11:28:37,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:37,232 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:28:37,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:37,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:28:37,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2025-04-29 11:28:37,233 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:37,265 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2025-04-29 11:28:37,265 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:28:37,265 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-04-29 11:28:37,265 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:37,266 INFO L225 Difference]: With dead ends: 80 [2025-04-29 11:28:37,266 INFO L226 Difference]: Without dead ends: 80 [2025-04-29 11:28:37,266 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2025-04-29 11:28:37,267 INFO L437 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:37,267 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 60 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:37,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-04-29 11:28:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2025-04-29 11:28:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2025-04-29 11:28:37,272 INFO L79 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 68 [2025-04-29 11:28:37,273 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:37,273 INFO L485 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2025-04-29 11:28:37,273 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:37,273 INFO L278 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2025-04-29 11:28:37,273 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-04-29 11:28:37,273 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:37,273 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:37,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-04-29 11:28:37,473 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:28:37,474 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:37,474 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash 816331809, now seen corresponding path program 1 times [2025-04-29 11:28:37,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:37,474 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683492300] [2025-04-29 11:28:37,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:37,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:37,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-04-29 11:28:37,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-04-29 11:28:37,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:37,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-29 11:28:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:38,304 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683492300] [2025-04-29 11:28:38,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683492300] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:28:38,305 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34765979] [2025-04-29 11:28:38,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:28:38,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:28:38,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:28:38,307 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) [2025-04-29 11:28:38,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-04-29 11:28:38,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-04-29 11:28:38,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-04-29 11:28:38,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:28:38,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:38,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-04-29 11:28:38,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:28:38,394 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-04-29 11:28:38,448 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:38,493 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:38,540 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:38,587 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:38,642 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:38,688 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:38,742 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-04-29 11:28:38,746 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-04-29 11:28:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-29 11:28:38,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:28:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-04-29 11:28:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34765979] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:28:39,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:28:39,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 25] total 67 [2025-04-29 11:28:39,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572185051] [2025-04-29 11:28:39,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:28:39,194 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-04-29 11:28:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:39,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-04-29 11:28:39,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=3535, Unknown=0, NotChecked=0, Total=4422 [2025-04-29 11:28:39,196 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 67 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 67 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:39,750 INFO L93 Difference]: Finished difference Result 145 states and 146 transitions. [2025-04-29 11:28:39,750 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-04-29 11:28:39,750 INFO L79 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 67 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2025-04-29 11:28:39,750 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:39,751 INFO L225 Difference]: With dead ends: 145 [2025-04-29 11:28:39,751 INFO L226 Difference]: Without dead ends: 145 [2025-04-29 11:28:39,754 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3487 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1495, Invalid=7247, Unknown=0, NotChecked=0, Total=8742 [2025-04-29 11:28:39,755 INFO L437 NwaCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:39,755 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 352 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-29 11:28:39,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-04-29 11:28:39,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 140. [2025-04-29 11:28:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2025-04-29 11:28:39,759 INFO L79 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 75 [2025-04-29 11:28:39,759 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:39,759 INFO L485 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2025-04-29 11:28:39,759 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 67 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:28:39,760 INFO L278 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2025-04-29 11:28:39,760 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2025-04-29 11:28:39,760 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:28:39,760 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:39,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-04-29 11:28:39,965 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:28:39,965 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2025-04-29 11:28:39,965 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:28:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash 499960497, now seen corresponding path program 2 times [2025-04-29 11:28:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:28:39,966 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279146023] [2025-04-29 11:28:39,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 11:28:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:28:39,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 139 statements into 2 equivalence classes. [2025-04-29 11:28:39,999 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 139 statements. [2025-04-29 11:28:40,000 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 11:28:40,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:28:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2025-04-29 11:28:40,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:28:40,088 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279146023] [2025-04-29 11:28:40,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279146023] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:28:40,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:28:40,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:28:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321212014] [2025-04-29 11:28:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:28:40,089 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:28:40,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:28:40,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:28:40,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:28:40,090 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 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) [2025-04-29 11:28:40,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:28:40,115 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2025-04-29 11:28:40,115 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:28:40,116 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 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 139 [2025-04-29 11:28:40,116 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:28:40,116 INFO L225 Difference]: With dead ends: 139 [2025-04-29 11:28:40,116 INFO L226 Difference]: Without dead ends: 0 [2025-04-29 11:28:40,116 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:28:40,117 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:28:40,117 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:28:40,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-29 11:28:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-29 11:28:40,117 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) [2025-04-29 11:28:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-29 11:28:40,117 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2025-04-29 11:28:40,117 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:28:40,117 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-29 11:28:40,117 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 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) [2025-04-29 11:28:40,118 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-29 11:28:40,118 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 29 remaining) [2025-04-29 11:28:40,120 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 29 remaining) [2025-04-29 11:28:40,121 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 29 remaining) [2025-04-29 11:28:40,121 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-04-29 11:28:40,123 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-04-29 11:28:40,124 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:28:40,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:28:40 BoogieIcfgContainer [2025-04-29 11:28:40,127 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:28:40,127 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:28:40,127 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:28:40,127 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:28:40,128 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:28:33" (3/4) ... [2025-04-29 11:28:40,129 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:28:40,135 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-04-29 11:28:40,136 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-04-29 11:28:40,136 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-29 11:28:40,136 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-29 11:28:40,191 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:28:40,192 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:28:40,192 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:28:40,193 INFO L158 Benchmark]: Toolchain (without parser) took 7652.23ms. Allocated memory was 167.8MB in the beginning and 427.8MB in the end (delta: 260.0MB). Free memory was 122.7MB in the beginning and 344.9MB in the end (delta: -222.2MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2025-04-29 11:28:40,193 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:28:40,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.97ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 108.9MB in the end (delta: 13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:28:40,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.46ms. Allocated memory is still 167.8MB. Free memory was 108.9MB in the beginning and 108.0MB in the end (delta: 883.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:28:40,195 INFO L158 Benchmark]: Boogie Preprocessor took 29.69ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 106.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:28:40,195 INFO L158 Benchmark]: RCFGBuilder took 252.26ms. Allocated memory is still 167.8MB. Free memory was 106.4MB in the beginning and 90.5MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:28:40,195 INFO L158 Benchmark]: TraceAbstraction took 7099.84ms. Allocated memory was 167.8MB in the beginning and 427.8MB in the end (delta: 260.0MB). Free memory was 89.7MB in the beginning and 349.3MB in the end (delta: -259.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:28:40,196 INFO L158 Benchmark]: Witness Printer took 64.75ms. Allocated memory is still 427.8MB. Free memory was 349.3MB in the beginning and 344.9MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:28:40,197 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 201.3MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.97ms. Allocated memory is still 167.8MB. Free memory was 122.7MB in the beginning and 108.9MB in the end (delta: 13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.46ms. Allocated memory is still 167.8MB. Free memory was 108.9MB in the beginning and 108.0MB in the end (delta: 883.5kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.69ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 106.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 252.26ms. Allocated memory is still 167.8MB. Free memory was 106.4MB in the beginning and 90.5MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7099.84ms. Allocated memory was 167.8MB in the beginning and 427.8MB in the end (delta: 260.0MB). Free memory was 89.7MB in the beginning and 349.3MB in the end (delta: -259.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 64.75ms. Allocated memory is still 427.8MB. Free memory was 349.3MB in the beginning and 344.9MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 4]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 57 edges, 29 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 249 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 249 mSDsluCounter, 1178 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 957 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 603 IncrementalHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 221 mSDtfsCounter, 603 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 457 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4525 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=11, InterpolantAutomatonStates: 130, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 24 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 632 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 6644 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1076 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 1272/2096 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 29 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-29 11:28:40,213 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