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/memsafety/960521-1_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:36:34,119 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:36:34,121 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:36:34,136 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:36:34,137 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:36:34,138 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:36:34,139 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:36:34,140 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:36:34,141 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:36:34,142 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:36:34,142 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:36:34,143 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:36:34,143 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:36:34,145 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:36:34,145 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:36:34,148 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:36:34,150 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:36:34,152 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:36:34,153 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:36:34,154 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:36:34,156 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:36:34,160 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:36:34,161 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:36:34,161 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 05:36:34,171 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:36:34,171 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:36:34,172 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:36:34,172 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:36:34,172 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:36:34,173 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:36:34,173 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:36:34,173 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:36:34,173 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:36:34,174 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:36:34,174 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:36:34,174 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:36:34,174 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:36:34,174 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:36:34,175 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:36:34,175 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:36:34,175 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:36:34,175 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:36:34,175 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:36:34,175 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:36:34,176 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:36:34,176 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:36:34,176 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:36:34,176 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:36:34,176 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:36:34,177 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:36:34,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:36:34,177 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:36:34,177 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:36:34,177 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:36:34,178 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:36:34,178 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:36:34,178 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:36:34,178 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:36:34,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:36:34,178 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:36:34,179 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:36:34,179 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:36:34,180 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:36:34,213 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:36:34,226 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:36:34,230 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:36:34,231 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:36:34,232 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:36:34,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-deref.i [2018-01-21 05:36:34,432 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:36:34,436 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:36:34,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:34,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:36:34,442 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:36:34,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adf5c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34, skipping insertion in model container [2018-01-21 05:36:34,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,469 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:34,509 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:34,623 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:34,641 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:34,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34 WrapperNode [2018-01-21 05:36:34,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:34,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:36:34,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:36:34,649 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:36:34,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (1/1) ... [2018-01-21 05:36:34,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:36:34,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:36:34,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:36:34,682 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:36:34,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (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 05:36:34,727 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:36:34,727 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:36:34,727 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-21 05:36:34,727 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:36:34,728 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:36:34,728 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:36:34,728 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:36:34,728 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:36:34,728 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:36:34,728 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 05:36:34,728 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 05:36:34,729 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-21 05:36:34,729 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:36:34,729 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:36:34,729 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:36:34,943 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:36:34,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:34 BoogieIcfgContainer [2018-01-21 05:36:34,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:36:34,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:36:34,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:36:34,946 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:36:34,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:36:34" (1/3) ... [2018-01-21 05:36:34,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232396f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:34, skipping insertion in model container [2018-01-21 05:36:34,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:34" (2/3) ... [2018-01-21 05:36:34,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232396f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:34, skipping insertion in model container [2018-01-21 05:36:34,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:34" (3/3) ... [2018-01-21 05:36:34,950 INFO L105 eAbstractionObserver]: Analyzing ICFG 960521-1_false-valid-deref.i [2018-01-21 05:36:34,958 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:36:34,963 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 05:36:34,999 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:34,999 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:34,999 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:34,999 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:34,999 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:34,999 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:34,999 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:35,000 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:36:35,000 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:35,021 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-21 05:36:35,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:36:35,028 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:35,029 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:36:35,029 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:36:35,034 INFO L82 PathProgramCache]: Analyzing trace with hash 90336, now seen corresponding path program 1 times [2018-01-21 05:36:35,037 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:35,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,082 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:35,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,082 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:35,155 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:35,164 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:35,172 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:35,172 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:35,172 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:35,172 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:35,172 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:35,172 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:35,172 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:35,172 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooErr0EnsuresViolation======== [2018-01-21 05:36:35,172 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:35,174 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-21 05:36:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 05:36:35,175 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:35,175 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:35,175 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr0EnsuresViolation]=== [2018-01-21 05:36:35,175 INFO L82 PathProgramCache]: Analyzing trace with hash 935443697, now seen corresponding path program 1 times [2018-01-21 05:36:35,175 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:35,176 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,177 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:35,177 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,177 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:35,206 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:35,252 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 05:36:35,254 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:35,254 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:35,254 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:35,256 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:35,271 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:35,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:35,275 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-01-21 05:36:35,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:35,300 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 05:36:35,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:35,302 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 05:36:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:35,382 INFO L225 Difference]: With dead ends: 60 [2018-01-21 05:36:35,382 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:35,385 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 05:36:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:35,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:35,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-21 05:36:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:35,408 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:35,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:35,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:35,411 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:35,411 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:35,412 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:35,412 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:35,412 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:35,412 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:35,412 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:35,412 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:36:35,412 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-21 05:36:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 05:36:35,415 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:35,415 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 05:36:35,415 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:35,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1172106943, now seen corresponding path program 1 times [2018-01-21 05:36:35,416 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:35,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,417 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:35,417 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,417 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:35,435 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:35,466 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 05:36:35,466 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:35,467 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:35,467 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:35,467 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:35,467 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:35,468 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:35,468 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-01-21 05:36:35,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:35,471 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 05:36:35,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:35,472 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-01-21 05:36:35,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:35,475 INFO L225 Difference]: With dead ends: 60 [2018-01-21 05:36:35,475 INFO L226 Difference]: Without dead ends: 36 [2018-01-21 05:36:35,476 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 05:36:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-21 05:36:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-21 05:36:35,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-21 05:36:35,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-01-21 05:36:35,486 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 27 [2018-01-21 05:36:35,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:35,486 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-01-21 05:36:35,486 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-01-21 05:36:35,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 05:36:35,487 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:35,487 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:35,488 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:35,488 INFO L82 PathProgramCache]: Analyzing trace with hash -862637837, now seen corresponding path program 1 times [2018-01-21 05:36:35,488 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:35,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,489 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:35,489 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,489 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:35,512 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:35,567 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 05:36:35,568 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:35,568 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:36:35,568 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:35,569 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:36:35,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:36:35,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:36:35,570 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2018-01-21 05:36:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:35,618 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-01-21 05:36:35,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:36:35,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-21 05:36:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:35,620 INFO L225 Difference]: With dead ends: 58 [2018-01-21 05:36:35,621 INFO L226 Difference]: Without dead ends: 45 [2018-01-21 05:36:35,622 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:36:35,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-01-21 05:36:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2018-01-21 05:36:35,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-01-21 05:36:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-01-21 05:36:35,632 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 29 [2018-01-21 05:36:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:35,632 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-01-21 05:36:35,632 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:36:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-01-21 05:36:35,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 05:36:35,633 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:35,634 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:35,634 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:35,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1162981958, now seen corresponding path program 1 times [2018-01-21 05:36:35,634 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:35,635 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,636 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:35,636 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,636 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:35,657 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:35,721 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 05:36:35,721 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:35,721 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 05:36:35,721 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:35,722 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 05:36:35,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 05:36:35,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 05:36:35,722 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 5 states. [2018-01-21 05:36:35,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:35,854 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2018-01-21 05:36:35,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:36:35,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-21 05:36:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:35,856 INFO L225 Difference]: With dead ends: 64 [2018-01-21 05:36:35,856 INFO L226 Difference]: Without dead ends: 44 [2018-01-21 05:36:35,856 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 05:36:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-21 05:36:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-01-21 05:36:35,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-21 05:36:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-01-21 05:36:35,862 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 33 [2018-01-21 05:36:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:35,863 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-01-21 05:36:35,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 05:36:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-01-21 05:36:35,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-21 05:36:35,864 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:35,864 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:35,865 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:35,865 INFO L82 PathProgramCache]: Analyzing trace with hash -797934829, now seen corresponding path program 1 times [2018-01-21 05:36:35,865 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:35,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,866 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:35,866 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:35,866 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:35,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 05:36:35,965 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 05:36:35,965 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 05:36:35,966 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-21 05:36:35,969 INFO L201 CegarAbsIntRunner]: [0], [1], [3], [7], [10], [12], [13], [15], [19], [23], [26], [28], [29], [31], [35], [40], [41], [42], [43], [44], [45], [46], [47], [49], [52], [53], [54], [60], [61], [63], [64], [65], [66], [67], [68] [2018-01-21 05:36:36,026 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 05:36:36,026 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 05:37:44,029 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 05:37:44,030 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 05:37:44,031 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 05:37:44,031 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 05:37:44,031 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 05:37:44,038 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:37:44,039 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 05:37:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:37:44,077 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 05:37:44,087 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 05:37:44,087 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 05:37:44,089 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:37:44,089 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:37:44,089 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:37:44,089 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:37:44,089 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:37:44,089 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:37:44,089 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:37:44,089 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:37:44,089 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:37:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-01-21 05:37:44,091 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 05:37:44,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:37:44 BoogieIcfgContainer [2018-01-21 05:37:44,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:37:44,092 INFO L168 Benchmark]: Toolchain (without parser) took 69659.67 ms. Allocated memory was 299.9 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 258.2 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 381.3 MB. Max. memory is 5.3 GB. [2018-01-21 05:37:44,093 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 299.9 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:37:44,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.10 ms. Allocated memory is still 299.9 MB. Free memory was 257.2 MB in the beginning and 247.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-21 05:37:44,094 INFO L168 Benchmark]: Boogie Preprocessor took 31.96 ms. Allocated memory is still 299.9 MB. Free memory was 247.1 MB in the beginning and 246.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-21 05:37:44,094 INFO L168 Benchmark]: RCFGBuilder took 261.79 ms. Allocated memory is still 299.9 MB. Free memory was 245.1 MB in the beginning and 229.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. [2018-01-21 05:37:44,094 INFO L168 Benchmark]: TraceAbstraction took 69147.48 ms. Allocated memory was 299.9 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 229.5 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 352.6 MB. Max. memory is 5.3 GB. [2018-01-21 05:37:44,095 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 299.9 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.10 ms. Allocated memory is still 299.9 MB. Free memory was 257.2 MB in the beginning and 247.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.96 ms. Allocated memory is still 299.9 MB. Free memory was 247.1 MB in the beginning and 246.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 261.79 ms. Allocated memory is still 299.9 MB. Free memory was 245.1 MB in the beginning and 229.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 69147.48 ms. Allocated memory was 299.9 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 229.5 MB in the beginning and 1.5 GB in the end (delta: -1.2 GB). Peak memory consumption was 352.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L619] int *a, *b; [L620] int n; VAL [\old(a)=7, \old(a)=4, \old(b)=3, \old(b)=2, \old(n)=5, a={0:0}, b={0:0}, n=0] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 40 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 621]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: fooErr0EnsuresViolation CFG has 4 procedures, 40 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 38 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 40 locations, 4 error locations. TIMEOUT Result, 68.6s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 101 SDtfs, 46 SDslu, 77 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 68.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 3748 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 629]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 629). Cancelled while IsEmpty was searching accepting run (input had 40 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 40 locations, 4 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-37-44-102.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-37-44-102.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-37-44-102.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-37-44-102.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_05-37-44-102.csv Completed graceful shutdown