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_preciseopt.epf -i ../../../trunk/examples/svcomp/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:15:18,603 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:15:18,605 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:15:18,622 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:15:18,622 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:15:18,623 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:15:18,624 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:15:18,629 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:15:18,632 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:15:18,632 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:15:18,633 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:15:18,634 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:15:18,635 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:15:18,636 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:15:18,637 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:15:18,639 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:15:18,642 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:15:18,644 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:15:18,645 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:15:18,646 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:15:18,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:15:18,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:15:18,655 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:15:18,655 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_preciseopt.epf [2018-01-21 08:15:18,665 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:15:18,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:15:18,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:15:18,666 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:15:18,666 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:15:18,666 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:15:18,666 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:15:18,667 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:15:18,667 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:15:18,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:15:18,668 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:15:18,668 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:15:18,668 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:15:18,668 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:15:18,668 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:15:18,669 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:15:18,669 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:15:18,669 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:15:18,669 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:15:18,669 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:15:18,669 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:15:18,670 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:15:18,670 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:15:18,670 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:15:18,670 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:15:18,670 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:15:18,671 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:15:18,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:15:18,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:15:18,671 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:15:18,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:15:18,672 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:15:18,672 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:15:18,672 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:15:18,672 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:15:18,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:15:18,672 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:15:18,673 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:15:18,673 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:15:18,674 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:15:18,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:15:18,720 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:15:18,724 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:15:18,726 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:15:18,727 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:15:18,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/diff-alloca_true-valid-memsafety_true-termination.i [2018-01-21 08:15:18,879 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:15:18,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:15:18,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:15:18,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:15:18,895 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:15:18,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:15:18" (1/1) ... [2018-01-21 08:15:18,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9aff80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:18, skipping insertion in model container [2018-01-21 08:15:18,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:15:18" (1/1) ... [2018-01-21 08:15:18,920 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:15:18,961 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:15:19,101 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:15:19,125 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:15:19,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19 WrapperNode [2018-01-21 08:15:19,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:15:19,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:15:19,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:15:19,133 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:15:19,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (1/1) ... [2018-01-21 08:15:19,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (1/1) ... [2018-01-21 08:15:19,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (1/1) ... [2018-01-21 08:15:19,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (1/1) ... [2018-01-21 08:15:19,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (1/1) ... [2018-01-21 08:15:19,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (1/1) ... [2018-01-21 08:15:19,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (1/1) ... [2018-01-21 08:15:19,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:15:19,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:15:19,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:15:19,166 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:15:19,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (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 [2018-01-21 08:15:19,215 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:15:19,215 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:15:19,215 INFO L136 BoogieDeclarations]: Found implementation of procedure diff [2018-01-21 08:15:19,215 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:15:19,215 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:15:19,215 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:15:19,215 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:15:19,215 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:15:19,216 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:15:19,216 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:15:19,216 INFO L128 BoogieDeclarations]: Found specification of procedure diff [2018-01-21 08:15:19,216 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:15:19,216 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:15:19,216 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:15:19,411 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:15:19,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:15:19 BoogieIcfgContainer [2018-01-21 08:15:19,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:15:19,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:15:19,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:15:19,414 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:15:19,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:15:18" (1/3) ... [2018-01-21 08:15:19,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683b3905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:15:19, skipping insertion in model container [2018-01-21 08:15:19,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:15:19" (2/3) ... [2018-01-21 08:15:19,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683b3905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:15:19, skipping insertion in model container [2018-01-21 08:15:19,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:15:19" (3/3) ... [2018-01-21 08:15:19,417 INFO L105 eAbstractionObserver]: Analyzing ICFG diff-alloca_true-valid-memsafety_true-termination.i [2018-01-21 08:15:19,425 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:15:19,431 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 08:15:19,470 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:15:19,470 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:15:19,470 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:15:19,471 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:15:19,471 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:15:19,471 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:15:19,471 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:15:19,471 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:15:19,472 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:15:19,494 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 08:15:19,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:15:19,501 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:15:19,502 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:15:19,503 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:15:19,509 INFO L82 PathProgramCache]: Analyzing trace with hash 109556, now seen corresponding path program 1 times [2018-01-21 08:15:19,512 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:15:19,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:19,575 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:15:19,575 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:19,575 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:15:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:15:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:15:19,638 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:15:19,643 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:15:19,649 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:15:19,649 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:15:19,649 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:15:19,649 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:15:19,649 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:15:19,649 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:15:19,649 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:15:19,650 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:15:19,650 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:15:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 08:15:19,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 08:15:19,653 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:15:19,653 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] [2018-01-21 08:15:19,653 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:15:19,653 INFO L82 PathProgramCache]: Analyzing trace with hash 661572557, now seen corresponding path program 1 times [2018-01-21 08:15:19,653 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:15:19,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:19,655 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:15:19,655 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:19,655 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:15:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:15:19,699 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:15:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:15:19,753 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:15:19,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:15:19,753 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:15:19,755 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:15:19,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:15:19,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:15:19,790 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-01-21 08:15:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:15:19,813 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2018-01-21 08:15:19,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:15:19,814 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-01-21 08:15:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:15:19,823 INFO L225 Difference]: With dead ends: 72 [2018-01-21 08:15:19,823 INFO L226 Difference]: Without dead ends: 41 [2018-01-21 08:15:19,885 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 [2018-01-21 08:15:19,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-21 08:15:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-01-21 08:15:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-21 08:15:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-01-21 08:15:19,917 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 29 [2018-01-21 08:15:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:15:19,917 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-01-21 08:15:19,917 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:15:19,917 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-01-21 08:15:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 08:15:19,918 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:15:19,918 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] [2018-01-21 08:15:19,919 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:15:19,919 INFO L82 PathProgramCache]: Analyzing trace with hash -853617319, now seen corresponding path program 1 times [2018-01-21 08:15:19,919 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:15:19,920 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:19,920 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:15:19,921 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:19,921 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:15:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:15:19,950 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:15:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:15:20,098 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:15:20,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 08:15:20,098 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:15:20,100 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 08:15:20,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 08:15:20,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 08:15:20,101 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 5 states. [2018-01-21 08:15:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:15:20,180 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2018-01-21 08:15:20,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 08:15:20,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-21 08:15:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:15:20,182 INFO L225 Difference]: With dead ends: 66 [2018-01-21 08:15:20,183 INFO L226 Difference]: Without dead ends: 53 [2018-01-21 08:15:20,184 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 08:15:20,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-01-21 08:15:20,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 43. [2018-01-21 08:15:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-21 08:15:20,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-01-21 08:15:20,191 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 30 [2018-01-21 08:15:20,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:15:20,191 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-01-21 08:15:20,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 08:15:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-01-21 08:15:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-21 08:15:20,193 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:15:20,193 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 08:15:20,193 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:15:20,194 INFO L82 PathProgramCache]: Analyzing trace with hash 167900261, now seen corresponding path program 1 times [2018-01-21 08:15:20,194 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:15:20,195 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:20,195 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:15:20,195 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:20,195 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:15:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:15:20,214 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:15:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:15:20,269 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:15:20,269 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:15:20,269 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:15:20,270 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:15:20,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:15:20,270 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:15:20,270 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 3 states. [2018-01-21 08:15:20,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:15:20,288 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2018-01-21 08:15:20,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:15:20,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-01-21 08:15:20,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:15:20,293 INFO L225 Difference]: With dead ends: 76 [2018-01-21 08:15:20,293 INFO L226 Difference]: Without dead ends: 51 [2018-01-21 08:15:20,294 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 [2018-01-21 08:15:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-21 08:15:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2018-01-21 08:15:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-21 08:15:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2018-01-21 08:15:20,302 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 36 [2018-01-21 08:15:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:15:20,303 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2018-01-21 08:15:20,303 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:15:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2018-01-21 08:15:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-21 08:15:20,304 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:15:20,304 INFO L322 BasicCegarLoop]: trace histogram [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] [2018-01-21 08:15:20,304 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:15:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash 562606371, now seen corresponding path program 1 times [2018-01-21 08:15:20,305 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:15:20,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:20,306 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:15:20,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:15:20,306 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:15:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:15:20,327 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:15:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:15:20,435 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:15:20,435 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:15:20,436 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 40 with the following transitions: [2018-01-21 08:15:20,438 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [11], [15], [17], [21], [25], [41], [42], [43], [44], [48], [52], [54], [57], [65], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77], [78], [79], [80], [81], [83], [84], [85], [86], [87], [88] [2018-01-21 08:15:20,487 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:15:20,487 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 08:16:27,794 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 08:16:27,794 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 08:16:27,795 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 08:16:27,795 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:16:27,795 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 [2018-01-21 08:16:27,802 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:16:27,802 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 08:16:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:16:27,848 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:16:27,853 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 08:16:27,853 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 08:16:27,855 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:16:27,855 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:16:27,855 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:16:27,855 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:16:27,856 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:16:27,856 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:16:27,856 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:16:27,856 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == diffErr0EnsuresViolation======== [2018-01-21 08:16:27,856 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:16:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 08:16:27,858 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 08:16:27,858 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:16:27,859 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:16:27,859 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:16:27,859 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:16:27,859 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:16:27,859 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:16:27,859 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:16:27,859 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:16:27,859 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:16:27,860 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-01-21 08:16:27,860 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 08:16:27,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:16:27 BoogieIcfgContainer [2018-01-21 08:16:27,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:16:27,862 INFO L168 Benchmark]: Toolchain (without parser) took 68982.01 ms. Allocated memory was 293.1 MB in the beginning and 1.2 GB in the end (delta: 954.7 MB). Free memory was 251.2 MB in the beginning and 545.8 MB in the end (delta: -294.6 MB). Peak memory consumption was 660.1 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:27,863 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 293.1 MB. Free memory is still 257.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:16:27,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.55 ms. Allocated memory is still 293.1 MB. Free memory was 250.2 MB in the beginning and 240.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:27,864 INFO L168 Benchmark]: Boogie Preprocessor took 31.97 ms. Allocated memory is still 293.1 MB. Free memory was 240.1 MB in the beginning and 238.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:27,864 INFO L168 Benchmark]: RCFGBuilder took 246.11 ms. Allocated memory is still 293.1 MB. Free memory was 238.1 MB in the beginning and 220.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:27,864 INFO L168 Benchmark]: TraceAbstraction took 68449.13 ms. Allocated memory was 293.1 MB in the beginning and 1.2 GB in the end (delta: 954.7 MB). Free memory was 220.1 MB in the beginning and 545.8 MB in the end (delta: -325.7 MB). Peak memory consumption was 629.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:16:27,865 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 293.1 MB. Free memory is still 257.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 245.55 ms. Allocated memory is still 293.1 MB. Free memory was 250.2 MB in the beginning and 240.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.97 ms. Allocated memory is still 293.1 MB. Free memory was 240.1 MB in the beginning and 238.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 246.11 ms. Allocated memory is still 293.1 MB. Free memory was 238.1 MB in the beginning and 220.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 68449.13 ms. Allocated memory was 293.1 MB in the beginning and 1.2 GB in the end (delta: 954.7 MB). Free memory was 220.1 MB in the beginning and 545.8 MB in the end (delta: -325.7 MB). Peak memory consumption was 629.0 MB. 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, 45 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=45occurred 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 40 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 45 locations, 4 error locations. TIMEOUT Result, 68.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 133 SDtfs, 36 SDslu, 129 SDs, 0 SdLazy, 36 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3988 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 540]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 540). Cancelled while IsEmpty was searching accepting run (input had 45 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: diffErr0EnsuresViolation CFG has 4 procedures, 45 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=45occurred 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: 564]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 564). Cancelled while IsEmpty was searching accepting run (input had 45 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 45 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=45occurred 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/diff-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-16-27-872.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-16-27-872.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-16-27-872.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-16-27-872.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-16-27-872.csv Completed graceful shutdown