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_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/stroeder2-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:36:20,994 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:36:20,996 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:36:21,009 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:36:21,010 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:36:21,011 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:36:21,012 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:36:21,014 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:36:21,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:36:21,017 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:36:21,018 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:36:21,018 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:36:21,019 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:36:21,020 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:36:21,021 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:36:21,023 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:36:21,025 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:36:21,027 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:36:21,029 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:36:21,030 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:36:21,032 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:36:21,038 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_precise.epf [2018-01-21 05:36:21,049 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:36:21,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:36:21,050 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:36:21,050 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:36:21,050 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:36:21,050 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:36:21,050 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:36:21,051 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:36:21,051 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:36:21,051 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:36:21,051 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:36:21,051 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:36:21,052 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:36:21,052 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:36:21,052 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:36:21,052 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:36:21,052 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:36:21,052 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:36:21,052 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:36:21,052 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:36:21,053 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:36:21,053 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:36:21,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:36:21,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:36:21,053 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:36:21,054 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:36:21,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:36:21,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:36:21,054 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:36:21,054 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:36:21,054 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:36:21,054 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:36:21,055 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:36:21,055 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:36:21,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:36:21,055 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:36:21,055 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:36:21,056 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:36:21,056 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:36:21,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:36:21,100 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:36:21,103 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:36:21,104 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:36:21,105 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:36:21,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/stroeder2-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:21,293 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:36:21,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:36:21,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:21,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:36:21,306 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:36:21,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533d743e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21, skipping insertion in model container [2018-01-21 05:36:21,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,331 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:21,376 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:21,493 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:21,509 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:21,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21 WrapperNode [2018-01-21 05:36:21,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:21,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:36:21,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:36:21,518 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:36:21,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:36:21,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:36:21,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:36:21,557 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:36:21,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (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 05:36:21,608 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:36:21,608 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:36:21,608 INFO L136 BoogieDeclarations]: Found implementation of procedure sumOfThirdBytes [2018-01-21 05:36:21,608 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:36:21,608 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:36:21,608 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:36:21,608 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:36:21,608 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:36:21,609 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:36:21,609 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:36:21,609 INFO L128 BoogieDeclarations]: Found specification of procedure sumOfThirdBytes [2018-01-21 05:36:21,609 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:36:21,609 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:36:21,609 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:36:21,792 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:36:21,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:21 BoogieIcfgContainer [2018-01-21 05:36:21,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:36:21,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:36:21,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:36:21,797 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:36:21,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:36:21" (1/3) ... [2018-01-21 05:36:21,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da6ea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:21, skipping insertion in model container [2018-01-21 05:36:21,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21" (2/3) ... [2018-01-21 05:36:21,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da6ea56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:21, skipping insertion in model container [2018-01-21 05:36:21,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:21" (3/3) ... [2018-01-21 05:36:21,800 INFO L105 eAbstractionObserver]: Analyzing ICFG stroeder2-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:21,807 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:36:21,814 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 05:36:21,858 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:21,859 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:21,859 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:21,859 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:21,859 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:21,859 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:21,859 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:21,859 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:36:21,860 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 05:36:21,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:36:21,882 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:21,883 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:36:21,883 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:36:21,889 INFO L82 PathProgramCache]: Analyzing trace with hash 84570, now seen corresponding path program 1 times [2018-01-21 05:36:21,892 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:21,934 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:21,934 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:21,934 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:21,934 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:22,002 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:22,009 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,017 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:22,017 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:22,017 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:22,017 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:22,017 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:22,017 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:22,018 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:22,018 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == sumOfThirdBytesErr0EnsuresViolation======== [2018-01-21 05:36:22,018 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 05:36:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 05:36:22,021 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,021 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:22,022 INFO L371 AbstractCegarLoop]: === Iteration 1 === [sumOfThirdBytesErr0EnsuresViolation]=== [2018-01-21 05:36:22,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1019429665, now seen corresponding path program 1 times [2018-01-21 05:36:22,022 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,024 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,024 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,058 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,095 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 05:36:22,096 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,096 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:22,097 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:22,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:22,113 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:22,116 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 05:36:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:22,140 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-01-21 05:36:22,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:22,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-21 05:36:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:22,150 INFO L225 Difference]: With dead ends: 57 [2018-01-21 05:36:22,151 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:22,154 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 05:36:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:22,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:22,262 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-21 05:36:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:22,262 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:22,263 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:22,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:22,266 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:22,266 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:22,266 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:22,266 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:22,266 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:22,266 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:22,267 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:22,267 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:36:22,267 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:22,268 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 05:36:22,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 05:36:22,270 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,270 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] [2018-01-21 05:36:22,270 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash -16824561, now seen corresponding path program 1 times [2018-01-21 05:36:22,270 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,272 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,272 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,272 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,288 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,308 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 05:36:22,309 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,309 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:22,309 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,309 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:22,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:22,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:22,310 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 05:36:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:22,316 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-01-21 05:36:22,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:22,316 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-21 05:36:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:22,320 INFO L225 Difference]: With dead ends: 57 [2018-01-21 05:36:22,320 INFO L226 Difference]: Without dead ends: 31 [2018-01-21 05:36:22,321 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 05:36:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-01-21 05:36:22,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-01-21 05:36:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-21 05:36:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-01-21 05:36:22,333 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 21 [2018-01-21 05:36:22,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:22,334 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-01-21 05:36:22,334 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:22,334 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-01-21 05:36:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 05:36:22,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,335 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] [2018-01-21 05:36:22,335 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:22,336 INFO L82 PathProgramCache]: Analyzing trace with hash -728021691, now seen corresponding path program 1 times [2018-01-21 05:36:22,336 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,337 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,338 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,362 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,450 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 05:36:22,450 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,450 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 05:36:22,450 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,452 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 05:36:22,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 05:36:22,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 05:36:22,453 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2018-01-21 05:36:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:22,537 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2018-01-21 05:36:22,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:36:22,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-21 05:36:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:22,539 INFO L225 Difference]: With dead ends: 51 [2018-01-21 05:36:22,539 INFO L226 Difference]: Without dead ends: 41 [2018-01-21 05:36:22,540 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 05:36:22,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-21 05:36:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2018-01-21 05:36:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-21 05:36:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-01-21 05:36:22,546 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2018-01-21 05:36:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:22,547 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-01-21 05:36:22,547 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 05:36:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-01-21 05:36:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-21 05:36:22,548 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,548 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] [2018-01-21 05:36:22,548 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:22,549 INFO L82 PathProgramCache]: Analyzing trace with hash 143407380, now seen corresponding path program 1 times [2018-01-21 05:36:22,549 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,550 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,550 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,550 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,550 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:22,601 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:22,607 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,611 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,612 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,612 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,624 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:22,624 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:22,624 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:22,624 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:22,624 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:22,624 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:22,624 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:22,624 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:36:22,624 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 05:36:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 05:36:22,626 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,626 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:22,626 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:22,627 INFO L82 PathProgramCache]: Analyzing trace with hash 799981603, now seen corresponding path program 1 times [2018-01-21 05:36:22,627 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,628 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,628 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,628 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,628 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,638 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,654 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 05:36:22,654 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,655 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:22,655 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,655 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:22,655 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:22,655 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:22,656 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 05:36:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:22,663 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-01-21 05:36:22,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:22,664 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-21 05:36:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:22,665 INFO L225 Difference]: With dead ends: 57 [2018-01-21 05:36:22,665 INFO L226 Difference]: Without dead ends: 29 [2018-01-21 05:36:22,665 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 05:36:22,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-21 05:36:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-01-21 05:36:22,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-21 05:36:22,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-01-21 05:36:22,670 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 19 [2018-01-21 05:36:22,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:22,671 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-01-21 05:36:22,671 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:22,671 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-01-21 05:36:22,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 05:36:22,672 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,672 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:22,672 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash 830526425, now seen corresponding path program 1 times [2018-01-21 05:36:22,673 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,674 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,674 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,686 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,756 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 05:36:22,756 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,756 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 05:36:22,756 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,756 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 05:36:22,757 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 05:36:22,757 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 05:36:22,757 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2018-01-21 05:36:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:22,804 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-01-21 05:36:22,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:36:22,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-01-21 05:36:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:22,806 INFO L225 Difference]: With dead ends: 47 [2018-01-21 05:36:22,806 INFO L226 Difference]: Without dead ends: 39 [2018-01-21 05:36:22,807 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 05:36:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-21 05:36:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2018-01-21 05:36:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-21 05:36:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-01-21 05:36:22,812 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 20 [2018-01-21 05:36:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:22,812 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-01-21 05:36:22,812 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 05:36:22,812 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-01-21 05:36:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-21 05:36:22,813 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,813 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] [2018-01-21 05:36:22,814 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:22,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1184207000, now seen corresponding path program 1 times [2018-01-21 05:36:22,814 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,815 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,815 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,815 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,815 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,833 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,914 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 05:36:22,914 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,915 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:36:22,915 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,915 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:36:22,915 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:36:22,916 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:36:22,916 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2018-01-21 05:36:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:23,021 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-01-21 05:36:23,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:36:23,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-01-21 05:36:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:23,022 INFO L225 Difference]: With dead ends: 31 [2018-01-21 05:36:23,022 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:23,022 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 05:36:23,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:23,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:23,023 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-01-21 05:36:23,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:23,023 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:23,024 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:36:23,024 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:23,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:23,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:36:23 BoogieIcfgContainer [2018-01-21 05:36:23,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:36:23,028 INFO L168 Benchmark]: Toolchain (without parser) took 1734.48 ms. Allocated memory was 304.1 MB in the beginning and 459.8 MB in the end (delta: 155.7 MB). Free memory was 262.4 MB in the beginning and 372.6 MB in the end (delta: -110.2 MB). Peak memory consumption was 45.5 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,029 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 304.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:36:23,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.90 ms. Allocated memory is still 304.1 MB. Free memory was 261.4 MB in the beginning and 251.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,030 INFO L168 Benchmark]: Boogie Preprocessor took 38.44 ms. Allocated memory is still 304.1 MB. Free memory was 251.3 MB in the beginning and 250.3 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,030 INFO L168 Benchmark]: RCFGBuilder took 236.85 ms. Allocated memory is still 304.1 MB. Free memory was 250.3 MB in the beginning and 235.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,030 INFO L168 Benchmark]: TraceAbstraction took 1232.36 ms. Allocated memory was 304.1 MB in the beginning and 459.8 MB in the end (delta: 155.7 MB). Free memory was 235.4 MB in the beginning and 372.6 MB in the end (delta: -137.3 MB). Peak memory consumption was 18.5 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,032 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 304.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 218.90 ms. Allocated memory is still 304.1 MB. Free memory was 261.4 MB in the beginning and 251.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.44 ms. Allocated memory is still 304.1 MB. Free memory was 251.3 MB in the beginning and 250.3 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 236.85 ms. Allocated memory is still 304.1 MB. Free memory was 250.3 MB in the beginning and 235.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1232.36 ms. Allocated memory was 304.1 MB in the beginning and 459.8 MB in the end (delta: 155.7 MB). Free memory was 235.4 MB in the beginning and 372.6 MB in the end (delta: -137.3 MB). Peak memory consumption was 18.5 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) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 35 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=35occurred 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: 540]: 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: sumOfThirdBytesErr0EnsuresViolation CFG has 4 procedures, 35 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 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=35occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 169 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 - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L556] int array_size = __VERIFIER_nondet_int(); [L557] COND TRUE array_size < 1 || array_size >= 2147483647 / sizeof(int) [L558] array_size = 1 VAL [array_size=1] [L560] EXPR, FCALL __builtin_alloca (array_size * sizeof(int)) VAL [__builtin_alloca (array_size * sizeof(int))={6:0}, array_size=1] [L560] int* numbers = (int*) __builtin_alloca (array_size * sizeof(int)); VAL [__builtin_alloca (array_size * sizeof(int))={6:0}, array_size=1, numbers={6:0}] [L561] CALL, EXPR sumOfThirdBytes(numbers, array_size) VAL [\old(array_size)=1, numbers={6:0}] [L542] int i, sum; [L543] char* p; [L544] sum = 0 [L545] i = 0 VAL [\old(array_size)=1, array_size=1, i=0, numbers={6:0}, numbers={6:0}, sum=0] [L545] COND TRUE i < array_size [L546] p = &(numbers[i]) [L547] p = p + 2 VAL [\old(array_size)=1, array_size=1, i=0, numbers={6:0}, numbers={6:0}, p={6:2}, sum=0] [L548] EXPR, FCALL \read(*p) VAL [\old(array_size)=1, \read(*p)=0, array_size=1, i=0, numbers={6:0}, numbers={6:0}, p={6:2}, sum=0] [L548] COND FALSE !(*p > 0) [L545] i++ VAL [\old(array_size)=1, array_size=1, i=1, numbers={6:0}, numbers={6:0}, p={6:2}, sum=0] [L545] COND FALSE !(i < array_size) VAL [\old(array_size)=1, array_size=1, i=1, numbers={6:0}, numbers={6:0}, p={6:2}, sum=0] [L553] RET return sum; VAL [\old(array_size)=1, \result=0, array_size=1, i=1, numbers={6:0}, numbers={6:0}, p={6:2}, sum=0] [L561] EXPR sumOfThirdBytes(numbers, array_size) VAL [__builtin_alloca (array_size * sizeof(int))={6:0}, array_size=1, numbers={6:0}, sumOfThirdBytes(numbers, array_size)=0] [L561] return sumOfThirdBytes(numbers, array_size); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 35 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 16 SDslu, 75 SDs, 0 SdLazy, 18 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 1345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 555]: 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, 35 locations, 4 error locations. SAFE Result, 0.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 88 SDtfs, 32 SDslu, 73 SDs, 0 SdLazy, 50 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 3066 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/stroeder2-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-36-23-042.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/stroeder2-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-36-23-042.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/stroeder2-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-36-23-042.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/stroeder2-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-36-23-042.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/stroeder2-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_05-36-23-042.csv Received shutdown request...