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_smtcomp.epf -i ../../../trunk/examples/svcomp/memsafety-ext/tree_dsw_true-valid-memsafety_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:18:40,234 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:18:40,261 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:18:40,278 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:18:40,278 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:18:40,279 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:18:40,281 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:18:40,282 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:18:40,284 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:18:40,285 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:18:40,286 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 10:18:40,286 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 10:18:40,287 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 10:18:40,289 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 10:18:40,290 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 10:18:40,292 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 10:18:40,294 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 10:18:40,296 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 10:18:40,297 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 10:18:40,299 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 10:18:40,301 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 10:18:40,306 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_smtcomp.epf [2018-01-21 10:18:40,316 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:18:40,316 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:18:40,317 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:18:40,317 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:18:40,317 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:18:40,317 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:18:40,318 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:18:40,318 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:18:40,318 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:18:40,319 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:18:40,319 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:18:40,319 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:18:40,319 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:18:40,319 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:18:40,319 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:18:40,320 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:18:40,320 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:18:40,320 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:18:40,320 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:18:40,320 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:18:40,320 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:18:40,321 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:18:40,321 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:18:40,321 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:18:40,321 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:18:40,321 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:18:40,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:18:40,322 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:18:40,322 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:18:40,322 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:18:40,322 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:18:40,322 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:18:40,322 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:18:40,323 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:18:40,323 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:18:40,323 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:18:40,323 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:18:40,324 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:18:40,324 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:18:40,357 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:18:40,369 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:18:40,373 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:18:40,375 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:18:40,375 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:18:40,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_dsw_true-valid-memsafety_false-termination.i [2018-01-21 10:18:40,546 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:18:40,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:18:40,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:18:40,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:18:40,556 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:18:40,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7feccdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40, skipping insertion in model container [2018-01-21 10:18:40,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,573 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:18:40,611 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:18:40,734 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:18:40,754 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:18:40,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40 WrapperNode [2018-01-21 10:18:40,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:18:40,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:18:40,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:18:40,764 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:18:40,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (1/1) ... [2018-01-21 10:18:40,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:18:40,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:18:40,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:18:40,802 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:18:40,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (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 10:18:40,850 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:18:40,850 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:18:40,850 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:18:40,850 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 10:18:40,850 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 10:18:40,850 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:18:40,851 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:18:40,851 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:18:40,851 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:18:40,851 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:18:40,851 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:18:40,851 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:18:40,851 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:18:40,852 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:18:41,271 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:18:41,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:18:41 BoogieIcfgContainer [2018-01-21 10:18:41,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:18:41,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:18:41,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:18:41,275 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:18:41,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:18:40" (1/3) ... [2018-01-21 10:18:41,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e82a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:18:41, skipping insertion in model container [2018-01-21 10:18:41,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:18:40" (2/3) ... [2018-01-21 10:18:41,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e82a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:18:41, skipping insertion in model container [2018-01-21 10:18:41,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:18:41" (3/3) ... [2018-01-21 10:18:41,279 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_dsw_true-valid-memsafety_false-termination.i [2018-01-21 10:18:41,287 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:18:41,294 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 10:18:41,342 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:18:41,342 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:18:41,342 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:18:41,342 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:18:41,342 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:18:41,342 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:18:41,342 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:18:41,342 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:18:41,343 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:18:41,361 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2018-01-21 10:18:41,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:18:41,367 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:18:41,368 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:18:41,368 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:18:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash 214305, now seen corresponding path program 1 times [2018-01-21 10:18:41,373 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:18:41,413 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:41,413 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:18:41,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:41,414 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:18:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:18:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:18:41,471 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:18:41,477 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:18:41,483 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:18:41,483 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:18:41,483 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:18:41,483 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:18:41,483 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:18:41,483 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:18:41,483 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:18:41,484 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:18:41,484 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:18:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2018-01-21 10:18:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-21 10:18:41,488 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:18:41,488 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] [2018-01-21 10:18:41,489 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:18:41,489 INFO L82 PathProgramCache]: Analyzing trace with hash 210929596, now seen corresponding path program 1 times [2018-01-21 10:18:41,489 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:18:41,490 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:41,490 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:18:41,490 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:41,490 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:18:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:18:41,516 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:18:41,558 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 10:18:41,560 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:18:41,560 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:18:41,560 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:18:41,564 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 10:18:41,661 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 10:18:41,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 10:18:41,664 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 2 states. [2018-01-21 10:18:41,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:18:41,692 INFO L93 Difference]: Finished difference Result 192 states and 226 transitions. [2018-01-21 10:18:41,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 10:18:41,693 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-21 10:18:41,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:18:41,702 INFO L225 Difference]: With dead ends: 192 [2018-01-21 10:18:41,702 INFO L226 Difference]: Without dead ends: 98 [2018-01-21 10:18:41,705 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 10:18:41,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-01-21 10:18:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-01-21 10:18:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-21 10:18:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2018-01-21 10:18:41,741 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 26 [2018-01-21 10:18:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:18:41,741 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2018-01-21 10:18:41,741 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 10:18:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2018-01-21 10:18:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 10:18:41,743 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:18:41,743 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 10:18:41,743 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:18:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash -615979456, now seen corresponding path program 1 times [2018-01-21 10:18:41,743 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:18:41,744 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:41,744 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:18:41,744 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:41,744 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:18:41,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:18:41,766 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:18:41,853 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 10:18:41,854 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:18:41,854 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 10:18:41,854 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:18:41,855 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:18:41,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:18:41,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 10:18:41,856 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 4 states. [2018-01-21 10:18:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:18:41,894 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2018-01-21 10:18:41,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 10:18:41,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-21 10:18:41,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:18:41,896 INFO L225 Difference]: With dead ends: 109 [2018-01-21 10:18:41,896 INFO L226 Difference]: Without dead ends: 102 [2018-01-21 10:18:41,897 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 10:18:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-01-21 10:18:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2018-01-21 10:18:41,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-01-21 10:18:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2018-01-21 10:18:41,907 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 30 [2018-01-21 10:18:41,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:18:41,907 INFO L432 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2018-01-21 10:18:41,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:18:41,908 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2018-01-21 10:18:41,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-21 10:18:41,910 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:18:41,910 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 10:18:41,910 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:18:41,910 INFO L82 PathProgramCache]: Analyzing trace with hash -298055667, now seen corresponding path program 1 times [2018-01-21 10:18:41,910 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:18:41,911 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:41,912 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:18:41,912 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:41,912 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:18:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:18:41,934 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:18:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 10:18:41,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:18:41,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 10:18:41,998 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:18:41,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 10:18:41,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 10:18:41,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 10:18:41,999 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand 6 states. [2018-01-21 10:18:42,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:18:42,162 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2018-01-21 10:18:42,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 10:18:42,162 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2018-01-21 10:18:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:18:42,164 INFO L225 Difference]: With dead ends: 154 [2018-01-21 10:18:42,164 INFO L226 Difference]: Without dead ends: 114 [2018-01-21 10:18:42,164 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-21 10:18:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-21 10:18:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2018-01-21 10:18:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-01-21 10:18:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2018-01-21 10:18:42,171 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 42 [2018-01-21 10:18:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:18:42,172 INFO L432 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2018-01-21 10:18:42,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 10:18:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2018-01-21 10:18:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-01-21 10:18:42,173 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:18:42,173 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:18:42,173 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:18:42,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1908754361, now seen corresponding path program 1 times [2018-01-21 10:18:42,174 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:18:42,174 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:42,174 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:18:42,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:18:42,175 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:18:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:18:42,195 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:18:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 10:18:42,270 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:18:42,270 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 10:18:42,271 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 53 with the following transitions: [2018-01-21 10:18:42,274 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [8], [9], [10], [14], [16], [19], [102], [103], [107], [111], [113], [114], [115], [116], [117], [118], [119], [120], [123], [135], [137], [138], [139], [140], [141], [145], [149], [151], [152], [153], [154], [155], [156], [157], [168], [170], [181], [183], [187], [188], [189], [190], [192], [193], [194], [195] [2018-01-21 10:18:42,322 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 10:18:42,322 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 10:19:50,513 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 10:19:50,514 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 10:19:50,530 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 10:19:50,530 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 10:19:50,530 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 10:19:50,563 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:19:50,563 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 10:19:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:19:50,621 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 10:19:50,641 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 10:19:50,641 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:19:50,644 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:19:50,645 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:19:50,645 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:19:50,645 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:19:50,645 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:19:50,645 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:19:50,645 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:19:50,646 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:19:50,646 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:19:50,648 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2018-01-21 10:19:50,648 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 10:19:50,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:19:50 BoogieIcfgContainer [2018-01-21 10:19:50,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:19:50,650 INFO L168 Benchmark]: Toolchain (without parser) took 70103.81 ms. Allocated memory was 305.7 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 264.0 MB in the beginning and 1.2 GB in the end (delta: -960.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-21 10:19:50,652 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 305.7 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:19:50,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.01 ms. Allocated memory is still 305.7 MB. Free memory was 263.0 MB in the beginning and 251.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 5.3 GB. [2018-01-21 10:19:50,652 INFO L168 Benchmark]: Boogie Preprocessor took 36.82 ms. Allocated memory is still 305.7 MB. Free memory was 251.8 MB in the beginning and 249.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:19:50,653 INFO L168 Benchmark]: RCFGBuilder took 470.30 ms. Allocated memory is still 305.7 MB. Free memory was 249.8 MB in the beginning and 219.1 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 5.3 GB. [2018-01-21 10:19:50,653 INFO L168 Benchmark]: TraceAbstraction took 69376.80 ms. Allocated memory was 305.7 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 219.1 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-21 10:19:50,655 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 305.7 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 213.01 ms. Allocated memory is still 305.7 MB. Free memory was 263.0 MB in the beginning and 251.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.82 ms. Allocated memory is still 305.7 MB. Free memory was 251.8 MB in the beginning and 249.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 470.30 ms. Allocated memory is still 305.7 MB. Free memory was 249.8 MB in the beginning and 219.1 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 69376.80 ms. Allocated memory was 305.7 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 219.1 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.0 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, 101 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=101occurred 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 53 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, 101 locations, 3 error locations. TIMEOUT Result, 69.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 310 SDtfs, 268 SDslu, 353 SDs, 0 SdLazy, 104 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 68.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 5099 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: 620]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 620). Cancelled while IsEmpty was searching accepting run (input had 101 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 101 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=101occurred 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/tree_dsw_true-valid-memsafety_false-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-19-50-663.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/tree_dsw_true-valid-memsafety_false-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-19-50-663.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/tree_dsw_true-valid-memsafety_false-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-19-50-663.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/tree_dsw_true-valid-memsafety_false-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-19-50-663.csv Completed graceful shutdown