java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:19:35,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:19:35,683 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:19:35,695 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:19:35,696 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:19:35,696 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:19:35,697 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:19:35,698 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:19:35,700 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:19:35,700 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:19:35,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:19:35,701 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:19:35,702 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:19:35,703 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:19:35,703 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:19:35,706 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:19:35,708 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:19:35,710 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:19:35,711 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:19:35,712 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:19:35,715 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:19:35,720 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:19:35,720 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:19:35,720 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-21 08:19:35,731 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:19:35,731 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:19:35,732 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:19:35,732 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:19:35,732 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:19:35,733 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:19:35,733 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:19:35,733 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:19:35,733 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:19:35,734 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:19:35,734 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:19:35,734 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:19:35,734 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:19:35,735 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:19:35,735 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:19:35,735 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:19:35,735 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:19:35,735 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:19:35,736 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:19:35,736 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:19:35,736 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:19:35,736 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:19:35,736 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:19:35,737 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:19:35,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:19:35,737 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:19:35,737 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:19:35,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:19:35,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:19:35,738 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:19:35,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:19:35,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:19:35,739 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:19:35,739 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:19:35,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:19:35,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:19:35,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:19:35,740 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:19:35,740 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:19:35,741 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:19:35,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:19:35,788 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:19:35,793 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:19:35,794 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:19:35,795 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:19:35,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-free.i [2018-01-21 08:19:35,959 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:19:35,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:19:35,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:19:35,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:19:35,970 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:19:35,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:19:35" (1/1) ... [2018-01-21 08:19:35,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df89b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:35, skipping insertion in model container [2018-01-21 08:19:35,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:19:35" (1/1) ... [2018-01-21 08:19:35,995 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:19:36,036 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:19:36,160 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:19:36,174 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:19:36,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36 WrapperNode [2018-01-21 08:19:36,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:19:36,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:19:36,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:19:36,182 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:19:36,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (1/1) ... [2018-01-21 08:19:36,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (1/1) ... [2018-01-21 08:19:36,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (1/1) ... [2018-01-21 08:19:36,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (1/1) ... [2018-01-21 08:19:36,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (1/1) ... [2018-01-21 08:19:36,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (1/1) ... [2018-01-21 08:19:36,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (1/1) ... [2018-01-21 08:19:36,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:19:36,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:19:36,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:19:36,219 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:19:36,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:19:36,266 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:19:36,266 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:19:36,266 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-21 08:19:36,266 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:19:36,266 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 08:19:36,266 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 08:19:36,266 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:19:36,267 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:19:36,267 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:19:36,267 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:19:36,267 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:19:36,267 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-21 08:19:36,267 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:19:36,267 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:19:36,267 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:19:36,441 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:19:36,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:19:36 BoogieIcfgContainer [2018-01-21 08:19:36,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:19:36,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:19:36,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:19:36,445 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:19:36,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:19:35" (1/3) ... [2018-01-21 08:19:36,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b616d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:19:36, skipping insertion in model container [2018-01-21 08:19:36,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:19:36" (2/3) ... [2018-01-21 08:19:36,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b616d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:19:36, skipping insertion in model container [2018-01-21 08:19:36,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:19:36" (3/3) ... [2018-01-21 08:19:36,449 INFO L105 eAbstractionObserver]: Analyzing ICFG 960521-1_false-valid-free.i [2018-01-21 08:19:36,455 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:19:36,460 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 08:19:36,500 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:19:36,501 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:19:36,501 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:19:36,501 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:19:36,501 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:19:36,501 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:19:36,501 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:19:36,501 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 08:19:36,502 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:19:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-21 08:19:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 08:19:36,530 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:19:36,531 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 08:19:36,531 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 08:19:36,536 INFO L82 PathProgramCache]: Analyzing trace with hash 90336, now seen corresponding path program 1 times [2018-01-21 08:19:36,539 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:19:36,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:36,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:19:36,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:36,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:19:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:19:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 08:19:36,648 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 08:19:36,656 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 08:19:36,664 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:19:36,664 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:19:36,665 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:19:36,665 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:19:36,665 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:19:36,665 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:19:36,665 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:19:36,665 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooErr0EnsuresViolation======== [2018-01-21 08:19:36,665 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:19:36,666 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-21 08:19:36,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 08:19:36,667 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:19:36,667 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:19:36,667 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr0EnsuresViolation]=== [2018-01-21 08:19:36,668 INFO L82 PathProgramCache]: Analyzing trace with hash 935443697, now seen corresponding path program 1 times [2018-01-21 08:19:36,668 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:19:36,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:36,669 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:19:36,669 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:36,669 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:19:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:19:36,698 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:19:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:19:36,741 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:19:36,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:19:36,742 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:19:36,744 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:19:36,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:19:36,827 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:19:36,829 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-01-21 08:19:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:19:36,848 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 08:19:36,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:19:36,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 08:19:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:19:36,855 INFO L225 Difference]: With dead ends: 60 [2018-01-21 08:19:36,856 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:19:36,859 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:19:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:19:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:19:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:19:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:19:36,879 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-21 08:19:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:19:36,879 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:19:36,879 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:19:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:19:36,879 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:19:36,882 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:19:36,882 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:19:36,882 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:19:36,883 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:19:36,883 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:19:36,883 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:19:36,883 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:19:36,883 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 08:19:36,883 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:19:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-21 08:19:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 08:19:36,886 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:19:36,887 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] [2018-01-21 08:19:36,887 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:19:36,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1172106943, now seen corresponding path program 1 times [2018-01-21 08:19:36,887 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:19:36,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:36,888 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:19:36,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:36,889 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:19:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:19:36,910 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:19:36,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:19:36,937 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:19:36,937 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:19:36,937 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:19:36,937 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:19:36,938 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:19:36,938 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:19:36,938 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-01-21 08:19:36,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:19:36,943 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 08:19:36,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:19:36,943 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-01-21 08:19:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:19:36,947 INFO L225 Difference]: With dead ends: 60 [2018-01-21 08:19:36,947 INFO L226 Difference]: Without dead ends: 36 [2018-01-21 08:19:36,948 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:19:36,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-21 08:19:36,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-21 08:19:36,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-21 08:19:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-01-21 08:19:36,959 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 27 [2018-01-21 08:19:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:19:36,959 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-01-21 08:19:36,960 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:19:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-01-21 08:19:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 08:19:36,961 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:19:36,961 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:19:36,961 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:19:36,961 INFO L82 PathProgramCache]: Analyzing trace with hash -862637837, now seen corresponding path program 1 times [2018-01-21 08:19:36,962 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:19:36,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:36,963 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:19:36,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:36,963 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:19:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:19:36,986 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:19:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:19:37,041 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:19:37,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:19:37,042 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:19:37,043 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:19:37,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:19:37,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:19:37,044 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2018-01-21 08:19:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:19:37,105 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-01-21 08:19:37,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:19:37,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-21 08:19:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:19:37,107 INFO L225 Difference]: With dead ends: 58 [2018-01-21 08:19:37,107 INFO L226 Difference]: Without dead ends: 45 [2018-01-21 08:19:37,108 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:19:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-01-21 08:19:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2018-01-21 08:19:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-21 08:19:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-01-21 08:19:37,114 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 29 [2018-01-21 08:19:37,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:19:37,115 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-01-21 08:19:37,115 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:19:37,115 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-01-21 08:19:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 08:19:37,115 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:19:37,116 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] [2018-01-21 08:19:37,116 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 08:19:37,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1162981958, now seen corresponding path program 1 times [2018-01-21 08:19:37,116 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:19:37,117 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:37,118 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:19:37,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:37,118 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:19:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:19:37,137 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:19:37,204 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 08:19:37,204 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:19:37,204 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 08:19:37,204 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:19:37,205 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 08:19:37,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 08:19:37,205 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-21 08:19:37,206 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 5 states. [2018-01-21 08:19:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:19:37,295 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-01-21 08:19:37,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 08:19:37,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-21 08:19:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:19:37,297 INFO L225 Difference]: With dead ends: 38 [2018-01-21 08:19:37,297 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:19:37,297 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:19:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:19:37,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:19:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:19:37,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:19:37,298 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-01-21 08:19:37,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:19:37,299 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:19:37,299 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 08:19:37,299 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:19:37,299 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:19:37,301 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:19:37,301 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:19:37,301 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:19:37,301 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:19:37,301 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:19:37,302 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:19:37,302 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:19:37,302 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 08:19:37,302 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:19:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-21 08:19:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 08:19:37,305 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:19:37,305 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] [2018-01-21 08:19:37,305 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 08:19:37,305 INFO L82 PathProgramCache]: Analyzing trace with hash -521684774, now seen corresponding path program 1 times [2018-01-21 08:19:37,305 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:19:37,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:37,306 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:19:37,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:37,306 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:19:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:19:37,318 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:19:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:19:37,333 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:19:37,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:19:37,333 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:19:37,334 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:19:37,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:19:37,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:19:37,334 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-01-21 08:19:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:19:37,338 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 08:19:37,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:19:37,339 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 08:19:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:19:37,340 INFO L225 Difference]: With dead ends: 60 [2018-01-21 08:19:37,340 INFO L226 Difference]: Without dead ends: 34 [2018-01-21 08:19:37,341 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:19:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-01-21 08:19:37,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-01-21 08:19:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-01-21 08:19:37,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-01-21 08:19:37,345 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 25 [2018-01-21 08:19:37,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:19:37,346 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-01-21 08:19:37,346 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:19:37,346 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-01-21 08:19:37,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 08:19:37,347 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:19:37,347 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] [2018-01-21 08:19:37,347 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 08:19:37,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1567815694, now seen corresponding path program 1 times [2018-01-21 08:19:37,348 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:19:37,349 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:37,349 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:19:37,349 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:37,349 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:19:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:19:37,362 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:19:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 08:19:37,384 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:19:37,384 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 08:19:37,384 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:19:37,384 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 08:19:37,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 08:19:37,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:19:37,385 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 3 states. [2018-01-21 08:19:37,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:19:37,405 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2018-01-21 08:19:37,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 08:19:37,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-01-21 08:19:37,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:19:37,407 INFO L225 Difference]: With dead ends: 54 [2018-01-21 08:19:37,407 INFO L226 Difference]: Without dead ends: 43 [2018-01-21 08:19:37,408 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 08:19:37,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-21 08:19:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2018-01-21 08:19:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-21 08:19:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-01-21 08:19:37,412 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 27 [2018-01-21 08:19:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:19:37,413 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-01-21 08:19:37,413 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 08:19:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-01-21 08:19:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-21 08:19:37,414 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:19:37,414 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] [2018-01-21 08:19:37,414 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 08:19:37,415 INFO L82 PathProgramCache]: Analyzing trace with hash -890594667, now seen corresponding path program 1 times [2018-01-21 08:19:37,415 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:19:37,416 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:37,416 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:19:37,416 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:19:37,416 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:19:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:19:37,430 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:19:37,524 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 08:19:37,524 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:19:37,524 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 08:19:37,524 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:19:37,525 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 08:19:37,525 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 08:19:37,525 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-21 08:19:37,525 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2018-01-21 08:19:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:19:37,625 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-01-21 08:19:37,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 08:19:37,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-01-21 08:19:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:19:37,626 INFO L225 Difference]: With dead ends: 36 [2018-01-21 08:19:37,626 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:19:37,626 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-21 08:19:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:19:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:19:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:19:37,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:19:37,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-01-21 08:19:37,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:19:37,627 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:19:37,627 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 08:19:37,628 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:19:37,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:19:37,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 08:19:37 BoogieIcfgContainer [2018-01-21 08:19:37,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 08:19:37,631 INFO L168 Benchmark]: Toolchain (without parser) took 1671.60 ms. Allocated memory was 308.3 MB in the beginning and 468.7 MB in the end (delta: 160.4 MB). Free memory was 266.6 MB in the beginning and 375.7 MB in the end (delta: -109.1 MB). Peak memory consumption was 51.4 MB. Max. memory is 5.3 GB. [2018-01-21 08:19:37,632 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 308.3 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 08:19:37,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.90 ms. Allocated memory is still 308.3 MB. Free memory was 265.6 MB in the beginning and 255.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:19:37,632 INFO L168 Benchmark]: Boogie Preprocessor took 36.82 ms. Allocated memory is still 308.3 MB. Free memory was 255.6 MB in the beginning and 253.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 08:19:37,633 INFO L168 Benchmark]: RCFGBuilder took 223.39 ms. Allocated memory is still 308.3 MB. Free memory was 253.6 MB in the beginning and 238.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. [2018-01-21 08:19:37,633 INFO L168 Benchmark]: TraceAbstraction took 1186.85 ms. Allocated memory was 308.3 MB in the beginning and 468.7 MB in the end (delta: 160.4 MB). Free memory was 238.0 MB in the beginning and 375.7 MB in the end (delta: -137.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 5.3 GB. [2018-01-21 08:19:37,634 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 308.3 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 216.90 ms. Allocated memory is still 308.3 MB. Free memory was 265.6 MB in the beginning and 255.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.82 ms. Allocated memory is still 308.3 MB. Free memory was 255.6 MB in the beginning and 253.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 223.39 ms. Allocated memory is still 308.3 MB. Free memory was 253.6 MB in the beginning and 238.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1186.85 ms. Allocated memory was 308.3 MB in the beginning and 468.7 MB in the end (delta: 160.4 MB). Free memory was 238.0 MB in the beginning and 375.7 MB in the end (delta: -137.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L619] int *a, *b; [L620] int n; VAL [\old(a)=4, \old(a)=7, \old(b)=2, \old(b)=3, \old(n)=5, a={0:0}, b={0:0}, n=0] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 40 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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 - PositiveResult [Line: 621]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: fooErr0EnsuresViolation CFG has 4 procedures, 40 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 40 locations, 4 error locations. SAFE Result, 0.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 30 SDslu, 81 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3300 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 - PositiveResult [Line: 629]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 40 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 97 SDtfs, 30 SDslu, 79 SDs, 0 SdLazy, 28 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2916 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_08-19-37-642.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_08-19-37-642.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_08-19-37-642.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_08-19-37-642.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-free.i_mempurity-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_08-19-37-642.csv Received shutdown request...