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_imprecise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0019_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:34:29,370 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:34:29,372 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:34:29,385 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:34:29,386 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:34:29,387 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:34:29,388 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:34:29,390 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:34:29,392 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:34:29,392 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:34:29,393 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 00:34:29,413 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_imprecise.epf [2018-01-21 00:34:29,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:34:29,424 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:34:29,424 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:34:29,425 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:34:29,425 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:34:29,425 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:34:29,425 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:34:29,425 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:34:29,426 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:34:29,426 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:34:29,427 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:34:29,427 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:34:29,427 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:34:29,427 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:34:29,427 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:34:29,427 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:34:29,428 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:34:29,428 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:34:29,428 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:34:29,428 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:34:29,428 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:34:29,429 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:34:29,429 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:34:29,429 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:34:29,429 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:34:29,429 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:34:29,430 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:34:29,430 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:34:29,430 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:34:29,430 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:34:29,430 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:34:29,431 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:34:29,431 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:34:29,431 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:34:29,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:34:29,431 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:34:29,431 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:34:29,432 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:34:29,433 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:34:29,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:34:29,478 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:34:29,481 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:34:29,482 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:34:29,483 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:34:29,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0019_true-valid-memsafety_true-termination.i [2018-01-21 00:34:29,650 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:34:29,654 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:34:29,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:34:29,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:34:29,660 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:34:29,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1014e6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29, skipping insertion in model container [2018-01-21 00:34:29,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,678 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:34:29,715 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:34:29,829 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:34:29,844 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:34:29,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29 WrapperNode [2018-01-21 00:34:29,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:34:29,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:34:29,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:34:29,852 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:34:29,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (1/1) ... [2018-01-21 00:34:29,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:34:29,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:34:29,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:34:29,885 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:34:29,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:34:29,934 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:34:29,935 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:34:29,935 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_data [2018-01-21 00:34:29,935 INFO L136 BoogieDeclarations]: Found implementation of procedure free_data [2018-01-21 00:34:29,935 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:34:29,935 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 00:34:29,936 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 00:34:29,936 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:34:29,936 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:34:29,936 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:34:29,936 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:34:29,936 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 00:34:29,937 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_data [2018-01-21 00:34:29,937 INFO L128 BoogieDeclarations]: Found specification of procedure free_data [2018-01-21 00:34:29,937 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:34:29,937 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:34:29,937 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:34:30,116 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:34:30,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:34:30 BoogieIcfgContainer [2018-01-21 00:34:30,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:34:30,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:34:30,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:34:30,119 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:34:30,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:34:29" (1/3) ... [2018-01-21 00:34:30,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ee5add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:34:30, skipping insertion in model container [2018-01-21 00:34:30,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:34:29" (2/3) ... [2018-01-21 00:34:30,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ee5add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:34:30, skipping insertion in model container [2018-01-21 00:34:30,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:34:30" (3/3) ... [2018-01-21 00:34:30,123 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0019_true-valid-memsafety_true-termination.i [2018-01-21 00:34:30,131 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:34:30,137 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-21 00:34:30,185 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:34:30,186 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:34:30,186 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:34:30,186 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:34:30,186 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:34:30,186 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:34:30,186 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:34:30,187 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:34:30,187 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:34:30,207 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 00:34:30,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:34:30,212 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:34:30,213 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:34:30,213 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:34:30,218 INFO L82 PathProgramCache]: Analyzing trace with hash 61506, now seen corresponding path program 1 times [2018-01-21 00:34:30,220 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:34:30,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:30,263 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:34:30,264 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:30,264 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:34:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:34:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:34:30,318 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:34:30,325 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:34:30,331 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:34:30,331 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:34:30,332 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:34:30,332 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:34:30,332 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:34:30,332 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:34:30,332 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:34:30,332 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:34:30,332 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:34:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 00:34:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 00:34:30,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:34:30,335 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, 1, 1, 1, 1, 1] [2018-01-21 00:34:30,335 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:34:30,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2120908116, now seen corresponding path program 1 times [2018-01-21 00:34:30,335 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:34:30,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:30,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:34:30,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:30,337 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:34:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:34:30,384 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:34:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:34:30,725 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:34:30,725 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 00:34:30,726 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:34:30,728 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 00:34:30,737 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 00:34:30,738 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:34:30,740 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2018-01-21 00:34:31,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:34:31,007 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-01-21 00:34:31,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 00:34:31,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-01-21 00:34:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:34:31,017 INFO L225 Difference]: With dead ends: 35 [2018-01-21 00:34:31,017 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:34:31,020 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-21 00:34:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:34:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:34:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:34:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:34:31,047 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-01-21 00:34:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:34:31,048 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:34:31,048 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 00:34:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:34:31,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:34:31,050 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:34:31,050 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:34:31,050 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:34:31,051 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:34:31,051 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:34:31,051 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:34:31,051 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:34:31,051 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == alloc_dataErr0EnsuresViolation======== [2018-01-21 00:34:31,051 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:34:31,052 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 00:34:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 00:34:31,052 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:34:31,053 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:34:31,053 INFO L371 AbstractCegarLoop]: === Iteration 1 === [alloc_dataErr0EnsuresViolation]=== [2018-01-21 00:34:31,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1287680381, now seen corresponding path program 1 times [2018-01-21 00:34:31,053 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:34:31,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:31,054 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:34:31,054 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:31,054 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:34:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:34:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:34:31,084 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:34:31,086 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:34:31,088 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:34:31,095 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:34:31,095 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:34:31,095 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:34:31,096 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:34:31,096 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:34:31,096 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:34:31,096 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:34:31,096 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:34:31,096 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:34:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 00:34:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 00:34:31,098 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:34:31,098 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 00:34:31,098 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:34:31,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1419020491, now seen corresponding path program 1 times [2018-01-21 00:34:31,098 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:34:31,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:31,099 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:34:31,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:31,099 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:34:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:34:31,120 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:34:31,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:34:31,212 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:34:31,212 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-21 00:34:31,212 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:34:31,212 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 00:34:31,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 00:34:31,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:34:31,213 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2018-01-21 00:34:31,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:34:31,341 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-01-21 00:34:31,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 00:34:31,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-01-21 00:34:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:34:31,342 INFO L225 Difference]: With dead ends: 35 [2018-01-21 00:34:31,342 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:34:31,342 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-21 00:34:31,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:34:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:34:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:34:31,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:34:31,343 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-01-21 00:34:31,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:34:31,343 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:34:31,343 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 00:34:31,343 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:34:31,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:34:31,344 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:34:31,344 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:34:31,344 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:34:31,345 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:34:31,345 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:34:31,345 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:34:31,345 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:34:31,345 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == free_dataErr0EnsuresViolation======== [2018-01-21 00:34:31,345 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:34:31,346 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 00:34:31,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 00:34:31,347 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:34:31,347 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] [2018-01-21 00:34:31,347 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_dataErr0EnsuresViolation]=== [2018-01-21 00:34:31,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2019809247, now seen corresponding path program 1 times [2018-01-21 00:34:31,347 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:34:31,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:31,348 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:34:31,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:31,348 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:34:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:34:31,359 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:34:31,383 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 00:34:31,383 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:34:31,384 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:34:31,384 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:34:31,384 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:34:31,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:34:31,384 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:34:31,385 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2018-01-21 00:34:31,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:34:31,435 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-01-21 00:34:31,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:34:31,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-21 00:34:31,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:34:31,439 INFO L225 Difference]: With dead ends: 37 [2018-01-21 00:34:31,440 INFO L226 Difference]: Without dead ends: 23 [2018-01-21 00:34:31,440 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 00:34:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-01-21 00:34:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-01-21 00:34:31,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-01-21 00:34:31,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2018-01-21 00:34:31,453 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 20 [2018-01-21 00:34:31,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:34:31,453 INFO L432 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2018-01-21 00:34:31,453 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:34:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2018-01-21 00:34:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 00:34:31,454 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:34:31,455 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 00:34:31,455 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_dataErr0EnsuresViolation]=== [2018-01-21 00:34:31,455 INFO L82 PathProgramCache]: Analyzing trace with hash 288559295, now seen corresponding path program 1 times [2018-01-21 00:34:31,455 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:34:31,456 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:31,456 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:34:31,456 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:34:31,457 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:34:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:34:31,472 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:34:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:34:31,720 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:34:31,720 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-21 00:34:31,720 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:34:31,722 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-21 00:34:31,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-21 00:34:31,723 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-01-21 00:34:31,723 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 12 states. [2018-01-21 00:34:31,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:34:31,926 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2018-01-21 00:34:31,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 00:34:31,926 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-01-21 00:34:31,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:34:31,926 INFO L225 Difference]: With dead ends: 23 [2018-01-21 00:34:31,926 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:34:31,927 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2018-01-21 00:34:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:34:31,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:34:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:34:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:34:31,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-01-21 00:34:31,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:34:31,928 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:34:31,928 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-21 00:34:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:34:31,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:34:31,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:34:31 BoogieIcfgContainer [2018-01-21 00:34:31,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:34:31,931 INFO L168 Benchmark]: Toolchain (without parser) took 2280.80 ms. Allocated memory was 305.7 MB in the beginning and 480.2 MB in the end (delta: 174.6 MB). Free memory was 264.6 MB in the beginning and 441.2 MB in the end (delta: -176.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:34:31,932 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 305.7 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:34:31,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.92 ms. Allocated memory is still 305.7 MB. Free memory was 264.6 MB in the beginning and 254.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:34:31,932 INFO L168 Benchmark]: Boogie Preprocessor took 33.15 ms. Allocated memory is still 305.7 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:34:31,932 INFO L168 Benchmark]: RCFGBuilder took 231.79 ms. Allocated memory is still 305.7 MB. Free memory was 252.6 MB in the beginning and 237.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-01-21 00:34:31,933 INFO L168 Benchmark]: TraceAbstraction took 1812.75 ms. Allocated memory was 305.7 MB in the beginning and 480.2 MB in the end (delta: 174.6 MB). Free memory was 235.7 MB in the beginning and 441.2 MB in the end (delta: -205.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:34:31,934 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 305.7 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.92 ms. Allocated memory is still 305.7 MB. Free memory was 264.6 MB in the beginning and 254.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.15 ms. Allocated memory is still 305.7 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 231.79 ms. Allocated memory is still 305.7 MB. Free memory was 252.6 MB in the beginning and 237.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1812.75 ms. Allocated memory was 305.7 MB in the beginning and 480.2 MB in the end (delta: 174.6 MB). Free memory was 235.7 MB in the beginning and 441.2 MB in the end (delta: -205.5 MB). There was no memory consumed. 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) * 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 5 procedures, 35 locations, 5 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: 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 5 procedures, 35 locations, 5 error locations. SAFE Result, 0.7s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 5 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s 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, 0.3s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 2314 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: 623]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L638] FCALL TData data; VAL [data={26:0}] [L639] CALL alloc_data(&data) VAL [pdata={26:0}] [L625] EXPR, FCALL malloc(16) VAL [malloc(16)={28:0}, pdata={26:0}, pdata={26:0}] [L625] FCALL pdata->lo = malloc(16) VAL [malloc(16)={28:0}, pdata={26:0}, pdata={26:0}] [L626] EXPR, FCALL malloc(24) VAL [malloc(16)={28:0}, malloc(24)={27:0}, pdata={26:0}, pdata={26:0}] [L626] FCALL pdata->hi = malloc(24) VAL [malloc(16)={28:0}, malloc(24)={27:0}, pdata={26:0}, pdata={26:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: alloc_dataErr0EnsuresViolation CFG has 5 procedures, 35 locations, 5 error locations. UNSAFE Result, 0.0s 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, 13 NumberOfCodeBlocks, 13 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: 637]: 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 5 procedures, 35 locations, 5 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 5 SDslu, 3 SDs, 0 SdLazy, 49 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2088 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: 628]: 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: free_dataErr0EnsuresViolation CFG has 5 procedures, 35 locations, 5 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 15 SDslu, 27 SDs, 0 SdLazy, 156 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 4444 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-34-31-941.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-34-31-941.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-34-31-941.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-34-31-941.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_00-34-31-941.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_00-34-31-941.csv Received shutdown request...