java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/memsafety-ext2/length_test03_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:42:14,433 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:42:14,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:42:14,449 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:42:14,450 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:42:14,450 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:42:14,452 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:42:14,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:42:14,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:42:14,456 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:42:14,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:42:14,457 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:42:14,458 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:42:14,459 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:42:14,460 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:42:14,462 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:42:14,465 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:42:14,467 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:42:14,468 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:42:14,469 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:42:14,472 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 23:42:14,476 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 23:42:14,477 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 23:42:14,477 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-20 23:42:14,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:42:14,487 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:42:14,488 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:42:14,488 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:42:14,488 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:42:14,488 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:42:14,488 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:42:14,489 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:42:14,489 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:42:14,489 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:42:14,489 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:42:14,489 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:42:14,489 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:42:14,489 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:42:14,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:42:14,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:42:14,490 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:42:14,490 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:42:14,490 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:42:14,490 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:42:14,490 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:42:14,490 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:42:14,491 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:42:14,491 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:42:14,491 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:42:14,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:42:14,491 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:42:14,492 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:42:14,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:42:14,492 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:42:14,492 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:42:14,492 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:42:14,492 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:42:14,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:42:14,493 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:42:14,493 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:42:14,493 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:42:14,493 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:42:14,525 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:42:14,536 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:42:14,539 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:42:14,541 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:42:14,541 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:42:14,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/length_test03_true-valid-memsafety.i [2018-01-20 23:42:14,722 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:42:14,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:42:14,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:42:14,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:42:14,732 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:42:14,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41741684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14, skipping insertion in model container [2018-01-20 23:42:14,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,749 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:42:14,786 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:42:14,909 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:42:14,933 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:42:14,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14 WrapperNode [2018-01-20 23:42:14,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:42:14,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:42:14,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:42:14,944 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:42:14,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (1/1) ... [2018-01-20 23:42:14,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:42:14,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:42:14,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:42:14,987 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:42:14,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:42:15,037 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:42:15,038 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:42:15,038 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-20 23:42:15,038 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:42:15,038 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:42:15,038 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:42:15,039 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-20 23:42:15,039 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-20 23:42:15,039 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:42:15,039 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:42:15,039 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:42:15,039 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 23:42:15,040 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-01-20 23:42:15,040 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:42:15,040 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-20 23:42:15,040 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:42:15,040 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:42:15,040 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:42:15,406 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:42:15,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:42:15 BoogieIcfgContainer [2018-01-20 23:42:15,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:42:15,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:42:15,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:42:15,411 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:42:15,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:42:14" (1/3) ... [2018-01-20 23:42:15,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e936bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:42:15, skipping insertion in model container [2018-01-20 23:42:15,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:42:14" (2/3) ... [2018-01-20 23:42:15,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e936bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:42:15, skipping insertion in model container [2018-01-20 23:42:15,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:42:15" (3/3) ... [2018-01-20 23:42:15,415 INFO L105 eAbstractionObserver]: Analyzing ICFG length_test03_true-valid-memsafety.i [2018-01-20 23:42:15,425 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:42:15,431 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 23:42:15,475 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:42:15,475 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:42:15,475 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:42:15,475 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:42:15,475 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:42:15,475 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:42:15,475 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:42:15,475 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:42:15,476 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:42:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-01-20 23:42:15,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:42:15,499 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:42:15,500 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:42:15,500 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:42:15,504 INFO L82 PathProgramCache]: Analyzing trace with hash 159493, now seen corresponding path program 1 times [2018-01-20 23:42:15,506 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:42:15,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:15,547 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:42:15,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:15,548 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:42:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:42:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:42:15,598 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:42:15,604 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:42:15,611 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:42:15,612 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:42:15,612 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:42:15,612 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:42:15,612 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:42:15,612 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:42:15,612 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:42:15,613 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:42:15,613 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:42:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-01-20 23:42:15,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-20 23:42:15,619 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:42:15,620 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:42:15,620 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:42:15,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1690254578, now seen corresponding path program 1 times [2018-01-20 23:42:15,620 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:42:15,621 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:15,621 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:42:15,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:15,622 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:42:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:42:15,666 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:42:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:42:15,810 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:42:15,810 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:42:15,811 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:42:15,813 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 23:42:15,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 23:42:15,824 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:42:15,826 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2018-01-20 23:42:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:42:15,851 INFO L93 Difference]: Finished difference Result 141 states and 158 transitions. [2018-01-20 23:42:15,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 23:42:15,853 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 34 [2018-01-20 23:42:15,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:42:15,862 INFO L225 Difference]: With dead ends: 141 [2018-01-20 23:42:15,862 INFO L226 Difference]: Without dead ends: 76 [2018-01-20 23:42:15,865 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 23:42:15,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-20 23:42:15,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-01-20 23:42:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-20 23:42:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2018-01-20 23:42:15,904 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 34 [2018-01-20 23:42:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:42:15,904 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2018-01-20 23:42:15,905 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 23:42:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2018-01-20 23:42:15,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-01-20 23:42:15,908 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:42:15,908 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:42:15,908 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:42:15,909 INFO L82 PathProgramCache]: Analyzing trace with hash -767510167, now seen corresponding path program 1 times [2018-01-20 23:42:15,909 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:42:15,910 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:15,910 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:42:15,910 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:15,910 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:42:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:42:15,944 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:42:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:42:16,009 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:42:16,009 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 23:42:16,009 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:42:16,011 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:42:16,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:42:16,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:42:16,012 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 3 states. [2018-01-20 23:42:16,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:42:16,044 INFO L93 Difference]: Finished difference Result 139 states and 154 transitions. [2018-01-20 23:42:16,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:42:16,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-01-20 23:42:16,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:42:16,047 INFO L225 Difference]: With dead ends: 139 [2018-01-20 23:42:16,047 INFO L226 Difference]: Without dead ends: 77 [2018-01-20 23:42:16,048 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:42:16,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-20 23:42:16,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-01-20 23:42:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-01-20 23:42:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-01-20 23:42:16,058 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 54 [2018-01-20 23:42:16,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:42:16,058 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-01-20 23:42:16,058 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:42:16,058 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-01-20 23:42:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-01-20 23:42:16,061 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:42:16,061 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:42:16,061 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:42:16,061 INFO L82 PathProgramCache]: Analyzing trace with hash 667417900, now seen corresponding path program 1 times [2018-01-20 23:42:16,061 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:42:16,062 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:16,062 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:42:16,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:16,063 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:42:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:42:16,105 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:42:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 23:42:16,164 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:42:16,164 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 23:42:16,165 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:42:16,165 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:42:16,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:42:16,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:42:16,166 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 3 states. [2018-01-20 23:42:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:42:16,198 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2018-01-20 23:42:16,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:42:16,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-01-20 23:42:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:42:16,200 INFO L225 Difference]: With dead ends: 117 [2018-01-20 23:42:16,200 INFO L226 Difference]: Without dead ends: 88 [2018-01-20 23:42:16,200 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:42:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-01-20 23:42:16,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2018-01-20 23:42:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-20 23:42:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-20 23:42:16,209 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 56 [2018-01-20 23:42:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:42:16,210 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-20 23:42:16,210 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:42:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-20 23:42:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-20 23:42:16,213 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:42:16,213 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:42:16,213 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:42:16,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1090926838, now seen corresponding path program 1 times [2018-01-20 23:42:16,213 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:42:16,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:16,215 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:42:16,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:42:16,215 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:42:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:42:16,252 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:42:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-20 23:42:16,335 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:42:16,335 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-20 23:42:16,336 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 84 with the following transitions: [2018-01-20 23:42:16,339 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [6], [7], [8], [12], [15], [18], [24], [28], [31], [33], [36], [40], [41], [42], [43], [47], [51], [61], [62], [63], [64], [68], [71], [73], [74], [75], [76], [77], [79], [83], [84], [85], [86], [87], [89], [90], [95], [96], [97], [98], [99], [100], [101], [104], [105], [106], [112], [113], [114], [115], [116], [126], [128], [129], [130], [131], [132], [133], [134], [135] [2018-01-20 23:42:16,395 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:42:16,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-20 23:43:23,661 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-20 23:43:23,661 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-20 23:43:23,662 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-20 23:43:23,662 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:43:23,662 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:43:23,672 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:43:23,672 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:43:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:43:23,756 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:43:23,761 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-20 23:43:23,762 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 23:43:23,764 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:43:23,764 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:43:23,765 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:43:23,765 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:43:23,765 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:43:23,765 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:43:23,765 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:43:23,765 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:43:23,765 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:43:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-01-20 23:43:23,767 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 23:43:23,768 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:43:23,768 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:43:23,768 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:43:23,768 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:43:23,768 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:43:23,768 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:43:23,768 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:43:23,768 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == appendErr0EnsuresViolation======== [2018-01-20 23:43:23,768 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:43:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2018-01-20 23:43:23,769 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 23:43:23,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:43:23 BoogieIcfgContainer [2018-01-20 23:43:23,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:43:23,771 INFO L168 Benchmark]: Toolchain (without parser) took 69048.42 ms. Allocated memory was 300.9 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 259.3 MB in the beginning and 1.1 GB in the end (delta: -856.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-20 23:43:23,772 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 300.9 MB. Free memory is still 265.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:43:23,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.90 ms. Allocated memory is still 300.9 MB. Free memory was 258.3 MB in the beginning and 247.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:43:23,772 INFO L168 Benchmark]: Boogie Preprocessor took 42.55 ms. Allocated memory is still 300.9 MB. Free memory was 247.3 MB in the beginning and 245.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:43:23,772 INFO L168 Benchmark]: RCFGBuilder took 420.03 ms. Allocated memory is still 300.9 MB. Free memory was 245.3 MB in the beginning and 219.7 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 5.3 GB. [2018-01-20 23:43:23,773 INFO L168 Benchmark]: TraceAbstraction took 68361.83 ms. Allocated memory was 300.9 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 219.7 MB in the beginning and 1.1 GB in the end (delta: -895.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-20 23:43:23,774 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 300.9 MB. Free memory is still 265.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 216.90 ms. Allocated memory is still 300.9 MB. Free memory was 258.3 MB in the beginning and 247.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 42.55 ms. Allocated memory is still 300.9 MB. Free memory was 247.3 MB in the beginning and 245.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 420.03 ms. Allocated memory is still 300.9 MB. Free memory was 245.3 MB in the beginning and 219.7 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 68361.83 ms. Allocated memory was 300.9 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 219.7 MB in the beginning and 1.1 GB in the end (delta: -895.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 80 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 84 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 80 locations, 4 error locations. TIMEOUT Result, 68.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 246 SDtfs, 7 SDslu, 150 SDs, 0 SdLazy, 16 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 67.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 7196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 554]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 554). Cancelled while IsEmpty was searching accepting run (input had 80 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 80 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 539]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 539). Cancelled while IsEmpty was searching accepting run (input had 80 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: appendErr0EnsuresViolation CFG has 4 procedures, 80 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-43-23-781.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-43-23-781.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-43-23-781.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-43-23-781.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/length_test03_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_23-43-23-781.csv Completed graceful shutdown