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/forester-heap/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:01:41,504 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:01:41,506 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:01:41,521 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:01:41,521 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:01:41,522 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:01:41,523 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:01:41,524 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:01:41,526 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:01:41,527 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:01:41,527 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:01:41,528 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:01:41,528 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:01:41,529 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:01:41,530 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:01:41,532 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:01:41,534 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:01:41,536 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:01:41,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:01:41,539 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:01:41,541 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 00:01:41,547 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 [2018-01-21 00:01:41,557 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:01:41,558 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:01:41,558 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:01:41,558 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:01:41,559 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:01:41,559 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:01:41,559 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:01:41,560 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:01:41,560 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:01:41,560 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:01:41,560 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:01:41,560 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:01:41,561 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:01:41,561 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:01:41,561 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:01:41,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:01:41,561 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:01:41,561 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:01:41,562 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:01:41,562 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:01:41,562 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:01:41,562 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:01:41,562 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:01:41,563 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:01:41,563 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:01:41,563 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:01:41,563 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:01:41,563 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:01:41,564 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:01:41,564 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:01:41,564 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:01:41,564 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:01:41,564 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:01:41,564 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:01:41,565 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:01:41,565 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:01:41,566 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:01:41,566 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:01:41,600 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:01:41,610 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:01:41,613 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:01:41,614 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:01:41,614 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:01:41,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 00:01:41,769 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:01:41,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:01:41,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:01:41,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:01:41,782 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:01:41,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:01:41" (1/1) ... [2018-01-21 00:01:41,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b4e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:41, skipping insertion in model container [2018-01-21 00:01:41,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:01:41" (1/1) ... [2018-01-21 00:01:41,806 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:01:41,850 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:01:41,993 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:01:42,017 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:01:42,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42 WrapperNode [2018-01-21 00:01:42,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:01:42,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:01:42,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:01:42,028 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:01:42,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (1/1) ... [2018-01-21 00:01:42,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (1/1) ... [2018-01-21 00:01:42,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (1/1) ... [2018-01-21 00:01:42,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (1/1) ... [2018-01-21 00:01:42,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (1/1) ... [2018-01-21 00:01:42,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (1/1) ... [2018-01-21 00:01:42,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (1/1) ... [2018-01-21 00:01:42,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:01:42,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:01:42,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:01:42,069 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:01:42,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (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 00:01:42,115 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:01:42,115 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:01:42,115 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:01:42,115 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 00:01:42,115 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 00:01:42,116 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:01:42,117 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:01:42,117 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:01:42,459 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:01:42,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:01:42 BoogieIcfgContainer [2018-01-21 00:01:42,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:01:42,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:01:42,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:01:42,462 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:01:42,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:01:41" (1/3) ... [2018-01-21 00:01:42,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e25990b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:01:42, skipping insertion in model container [2018-01-21 00:01:42,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:01:42" (2/3) ... [2018-01-21 00:01:42,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e25990b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:01:42, skipping insertion in model container [2018-01-21 00:01:42,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:01:42" (3/3) ... [2018-01-21 00:01:42,466 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 00:01:42,473 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:01:42,479 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 00:01:42,526 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:01:42,526 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:01:42,526 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:01:42,526 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:01:42,526 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:01:42,527 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:01:42,527 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:01:42,527 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:01:42,528 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:01:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-01-21 00:01:42,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:01:42,552 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:01:42,553 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:01:42,553 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:01:42,557 INFO L82 PathProgramCache]: Analyzing trace with hash 192421, now seen corresponding path program 1 times [2018-01-21 00:01:42,559 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:01:42,600 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:42,600 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:01:42,600 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:42,600 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:01:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:01:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:01:42,652 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:01:42,658 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:01:42,665 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:01:42,665 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:01:42,665 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:01:42,665 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:01:42,665 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:01:42,665 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:01:42,666 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:01:42,666 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:01:42,666 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:01:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-01-21 00:01:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-21 00:01:42,672 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:01:42,672 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] [2018-01-21 00:01:42,672 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:01:42,673 INFO L82 PathProgramCache]: Analyzing trace with hash 722719466, now seen corresponding path program 1 times [2018-01-21 00:01:42,673 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:01:42,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:42,674 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:01:42,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:42,674 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:01:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:01:42,713 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:01:42,844 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 00:01:42,846 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:01:42,847 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:01:42,847 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:01:42,850 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:01:42,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:01:42,865 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:01:42,904 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 2 states. [2018-01-21 00:01:42,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:01:42,924 INFO L93 Difference]: Finished difference Result 133 states and 162 transitions. [2018-01-21 00:01:42,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:01:42,926 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2018-01-21 00:01:42,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:01:42,938 INFO L225 Difference]: With dead ends: 133 [2018-01-21 00:01:42,938 INFO L226 Difference]: Without dead ends: 73 [2018-01-21 00:01:42,941 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 00:01:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-21 00:01:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-01-21 00:01:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-21 00:01:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2018-01-21 00:01:42,976 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 31 [2018-01-21 00:01:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:01:42,976 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2018-01-21 00:01:42,976 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:01:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2018-01-21 00:01:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 00:01:42,978 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:01:42,978 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] [2018-01-21 00:01:42,978 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:01:42,978 INFO L82 PathProgramCache]: Analyzing trace with hash 387707444, now seen corresponding path program 1 times [2018-01-21 00:01:42,978 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:01:42,979 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:42,979 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:01:42,979 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:42,979 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:01:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:01:43,012 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:01:43,103 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 00:01:43,104 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:01:43,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 00:01:43,104 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:01:43,106 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:01:43,106 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:01:43,106 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:01:43,107 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 5 states. [2018-01-21 00:01:43,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:01:43,354 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2018-01-21 00:01:43,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 00:01:43,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2018-01-21 00:01:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:01:43,358 INFO L225 Difference]: With dead ends: 118 [2018-01-21 00:01:43,359 INFO L226 Difference]: Without dead ends: 113 [2018-01-21 00:01:43,359 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:01:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-01-21 00:01:43,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 90. [2018-01-21 00:01:43,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-21 00:01:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2018-01-21 00:01:43,368 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 37 [2018-01-21 00:01:43,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:01:43,368 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2018-01-21 00:01:43,368 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:01:43,368 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2018-01-21 00:01:43,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-21 00:01:43,369 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:01:43,370 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] [2018-01-21 00:01:43,370 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:01:43,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1479512725, now seen corresponding path program 1 times [2018-01-21 00:01:43,370 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:01:43,371 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:43,371 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:01:43,371 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:43,371 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:01:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:01:43,391 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:01:43,458 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 00:01:43,458 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:01:43,459 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 00:01:43,459 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:01:43,459 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:01:43,460 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:01:43,460 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:01:43,460 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand 5 states. [2018-01-21 00:01:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:01:43,656 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2018-01-21 00:01:43,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:01:43,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-01-21 00:01:43,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:01:43,658 INFO L225 Difference]: With dead ends: 144 [2018-01-21 00:01:43,658 INFO L226 Difference]: Without dead ends: 139 [2018-01-21 00:01:43,659 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:01:43,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-01-21 00:01:43,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 75. [2018-01-21 00:01:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-21 00:01:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2018-01-21 00:01:43,669 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 41 [2018-01-21 00:01:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:01:43,670 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2018-01-21 00:01:43,670 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:01:43,670 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2018-01-21 00:01:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-21 00:01:43,672 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:01:43,672 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, 1, 1, 1] [2018-01-21 00:01:43,672 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:01:43,672 INFO L82 PathProgramCache]: Analyzing trace with hash -832067523, now seen corresponding path program 1 times [2018-01-21 00:01:43,672 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:01:43,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:43,673 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:01:43,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:01:43,673 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:01:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:01:43,697 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:01:43,855 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 00:01:43,855 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:01:43,855 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 00:01:43,857 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 43 with the following transitions: [2018-01-21 00:01:43,859 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [9], [11], [14], [29], [32], [33], [34], [35], [36], [37], [38], [78], [82], [84], [87], [95], [96], [100], [104], [137], [141], [145], [147], [148], [149], [150], [154], [155], [157], [158], [163], [164], [165], [166], [167] [2018-01-21 00:01:43,923 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:01:43,923 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 00:02:48,182 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 00:02:48,183 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 00:02:48,184 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:02:48,184 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:02:48,184 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 00:02:48,190 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:02:48,190 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:02:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:02:48,241 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:02:48,248 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 00:02:48,249 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 00:02:48,252 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:02:48,252 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:02:48,253 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:02:48,253 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:02:48,253 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:02:48,253 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:02:48,253 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:02:48,254 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:02:48,254 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:02:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-01-21 00:02:48,256 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 00:02:48,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:02:48 BoogieIcfgContainer [2018-01-21 00:02:48,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:02:48,258 INFO L168 Benchmark]: Toolchain (without parser) took 66489.00 ms. Allocated memory was 307.8 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 265.1 MB in the beginning and 892.7 MB in the end (delta: -627.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-21 00:02:48,260 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 307.8 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:02:48,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.15 ms. Allocated memory is still 307.8 MB. Free memory was 265.1 MB in the beginning and 253.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:02:48,260 INFO L168 Benchmark]: Boogie Preprocessor took 40.08 ms. Allocated memory is still 307.8 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:02:48,261 INFO L168 Benchmark]: RCFGBuilder took 391.59 ms. Allocated memory is still 307.8 MB. Free memory was 251.1 MB in the beginning and 224.5 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 5.3 GB. [2018-01-21 00:02:48,261 INFO L168 Benchmark]: TraceAbstraction took 65796.61 ms. Allocated memory was 307.8 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 224.5 MB in the beginning and 892.7 MB in the end (delta: -668.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 5.3 GB. [2018-01-21 00:02:48,263 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 307.8 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 253.15 ms. Allocated memory is still 307.8 MB. Free memory was 265.1 MB in the beginning and 253.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.08 ms. Allocated memory is still 307.8 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 391.59 ms. Allocated memory is still 307.8 MB. Free memory was 251.1 MB in the beginning and 224.5 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 65796.61 ms. Allocated memory was 307.8 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 224.5 MB in the beginning and 892.7 MB in the end (delta: -668.1 MB). Peak memory consumption was 1.3 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 3 procedures, 79 locations, 3 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=79occurred 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 43 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 79 locations, 3 error locations. TIMEOUT Result, 65.5s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 235 SDtfs, 287 SDslu, 278 SDs, 0 SdLazy, 158 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 87 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 9244 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: 986]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 986). Cancelled while IsEmpty was searching accepting run (input had 79 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 79 locations, 3 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=79occurred 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/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-02-48-270.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-02-48-270.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-02-48-270.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-02-48-270.csv Completed graceful shutdown