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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/memsafety-ext2/optional_data_creation_test04_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 22:07:04,867 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 22:07:04,870 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 22:07:04,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 22:07:04,884 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 22:07:04,885 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 22:07:04,886 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 22:07:04,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 22:07:04,889 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 22:07:04,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 22:07:04,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-20 22:07:04,909 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 22:07:04,909 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 22:07:04,910 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-20 22:07:04,919 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 22:07:04,920 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 22:07:04,920 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 22:07:04,921 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 22:07:04,921 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 22:07:04,921 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 22:07:04,921 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 22:07:04,922 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 22:07:04,922 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 22:07:04,922 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 22:07:04,923 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 22:07:04,923 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 22:07:04,923 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 22:07:04,923 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 22:07:04,923 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 22:07:04,923 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 22:07:04,924 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 22:07:04,924 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 22:07:04,924 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 22:07:04,924 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 22:07:04,924 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 22:07:04,925 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 22:07:04,925 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 22:07:04,925 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 22:07:04,925 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 22:07:04,925 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 22:07:04,926 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 22:07:04,926 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 22:07:04,926 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 22:07:04,926 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 22:07:04,926 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 22:07:04,927 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 22:07:04,927 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 22:07:04,927 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 22:07:04,927 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 22:07:04,928 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 22:07:04,928 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 22:07:04,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 22:07:04,975 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 22:07:04,979 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 22:07:04,980 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 22:07:04,981 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 22:07:04,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/optional_data_creation_test04_false-valid-memtrack.i [2018-01-20 22:07:05,161 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 22:07:05,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 22:07:05,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 22:07:05,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 22:07:05,172 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 22:07:05,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b75990c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05, skipping insertion in model container [2018-01-20 22:07:05,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,190 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:07:05,227 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:07:05,346 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:07:05,368 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:07:05,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05 WrapperNode [2018-01-20 22:07:05,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 22:07:05,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 22:07:05,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 22:07:05,378 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 22:07:05,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (1/1) ... [2018-01-20 22:07:05,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 22:07:05,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 22:07:05,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 22:07:05,418 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 22:07:05,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (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 [2018-01-20 22:07:05,468 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 22:07:05,468 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 22:07:05,468 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-20 22:07:05,468 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-20 22:07:05,468 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-20 22:07:05,468 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 22:07:05,468 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 22:07:05,468 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 22:07:05,469 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-20 22:07:05,469 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-20 22:07:05,469 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 22:07:05,469 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 22:07:05,469 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 22:07:05,469 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-20 22:07:05,469 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 22:07:05,469 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 22:07:05,470 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-20 22:07:05,470 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-20 22:07:05,470 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-20 22:07:05,470 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 22:07:05,470 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 22:07:05,470 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 22:07:05,765 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 22:07:05,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:07:05 BoogieIcfgContainer [2018-01-20 22:07:05,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 22:07:05,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 22:07:05,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 22:07:05,801 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 22:07:05,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 10:07:05" (1/3) ... [2018-01-20 22:07:05,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e3b0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:07:05, skipping insertion in model container [2018-01-20 22:07:05,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:05" (2/3) ... [2018-01-20 22:07:05,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e3b0b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:07:05, skipping insertion in model container [2018-01-20 22:07:05,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:07:05" (3/3) ... [2018-01-20 22:07:05,805 INFO L105 eAbstractionObserver]: Analyzing ICFG optional_data_creation_test04_false-valid-memtrack.i [2018-01-20 22:07:05,814 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 22:07:05,820 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-20 22:07:05,864 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:05,864 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:05,864 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:05,864 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:05,865 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:05,865 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:05,865 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:05,865 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-20 22:07:05,865 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:05,881 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-01-20 22:07:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-20 22:07:05,886 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:05,887 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:05,887 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:05,891 INFO L82 PathProgramCache]: Analyzing trace with hash -870275047, now seen corresponding path program 1 times [2018-01-20 22:07:05,892 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:05,893 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:05,934 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:05,934 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:05,934 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:06,003 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:06,076 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:06,076 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:06,078 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:07:06,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:07:06,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:06,098 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 3 states. [2018-01-20 22:07:06,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:06,285 INFO L93 Difference]: Finished difference Result 158 states and 180 transitions. [2018-01-20 22:07:06,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:07:06,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-20 22:07:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:06,295 INFO L225 Difference]: With dead ends: 158 [2018-01-20 22:07:06,295 INFO L226 Difference]: Without dead ends: 47 [2018-01-20 22:07:06,298 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 [2018-01-20 22:07:06,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-01-20 22:07:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-01-20 22:07:06,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-01-20 22:07:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-01-20 22:07:06,328 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 20 [2018-01-20 22:07:06,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:06,328 INFO L432 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-01-20 22:07:06,328 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:07:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-01-20 22:07:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 22:07:06,329 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,329 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] [2018-01-20 22:07:06,329 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-20 22:07:06,330 INFO L82 PathProgramCache]: Analyzing trace with hash 2022582004, now seen corresponding path program 1 times [2018-01-20 22:07:06,330 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,330 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,331 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,332 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,332 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:06,421 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 22:07:06,433 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:06,437 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:06,452 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:06,452 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:06,452 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:06,452 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:06,453 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:06,453 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:06,453 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:06,453 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == freeDataErr0EnsuresViolation======== [2018-01-20 22:07:06,453 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-01-20 22:07:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-20 22:07:06,457 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,457 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:06,457 INFO L371 AbstractCegarLoop]: === Iteration 1 === [freeDataErr0EnsuresViolation]=== [2018-01-20 22:07:06,458 INFO L82 PathProgramCache]: Analyzing trace with hash 18446588, now seen corresponding path program 1 times [2018-01-20 22:07:06,458 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,458 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,459 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,459 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:06,466 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:06,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:06,479 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:06,479 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:06,480 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:07:06,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:07:06,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:07:06,480 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 2 states. [2018-01-20 22:07:06,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:06,489 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2018-01-20 22:07:06,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:07:06,490 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-20 22:07:06,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:06,491 INFO L225 Difference]: With dead ends: 155 [2018-01-20 22:07:06,492 INFO L226 Difference]: Without dead ends: 70 [2018-01-20 22:07:06,493 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 [2018-01-20 22:07:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-20 22:07:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-01-20 22:07:06,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-20 22:07:06,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-01-20 22:07:06,500 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 21 [2018-01-20 22:07:06,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:06,501 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-01-20 22:07:06,501 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:07:06,501 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-01-20 22:07:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-20 22:07:06,502 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,502 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:06,502 INFO L371 AbstractCegarLoop]: === Iteration 2 === [freeDataErr0EnsuresViolation]=== [2018-01-20 22:07:06,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1906944541, now seen corresponding path program 1 times [2018-01-20 22:07:06,502 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,502 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,503 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:06,526 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:06,568 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:06,568 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:06,568 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:07:06,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:07:06,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:06,569 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 3 states. [2018-01-20 22:07:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:06,603 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2018-01-20 22:07:06,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:07:06,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-01-20 22:07:06,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:06,606 INFO L225 Difference]: With dead ends: 74 [2018-01-20 22:07:06,606 INFO L226 Difference]: Without dead ends: 73 [2018-01-20 22:07:06,607 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 [2018-01-20 22:07:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-20 22:07:06,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2018-01-20 22:07:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-20 22:07:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2018-01-20 22:07:06,615 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 40 [2018-01-20 22:07:06,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:06,616 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2018-01-20 22:07:06,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:07:06,616 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2018-01-20 22:07:06,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-20 22:07:06,617 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,618 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:06,618 INFO L371 AbstractCegarLoop]: === Iteration 3 === [freeDataErr0EnsuresViolation]=== [2018-01-20 22:07:06,618 INFO L82 PathProgramCache]: Analyzing trace with hash 253062134, now seen corresponding path program 1 times [2018-01-20 22:07:06,618 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,619 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:06,638 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:06,696 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:06,697 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 22:07:06,697 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 22:07:06,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 22:07:06,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 22:07:06,698 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 4 states. [2018-01-20 22:07:06,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:06,740 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2018-01-20 22:07:06,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 22:07:06,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-01-20 22:07:06,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:06,741 INFO L225 Difference]: With dead ends: 110 [2018-01-20 22:07:06,741 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 22:07:06,742 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 22:07:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 22:07:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 22:07:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 22:07:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 22:07:06,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2018-01-20 22:07:06,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:06,743 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 22:07:06,743 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 22:07:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 22:07:06,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 22:07:06,746 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:06,746 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:06,746 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:06,746 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:06,746 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:06,746 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:06,746 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:06,746 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 22:07:06,746 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-01-20 22:07:06,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 22:07:06,748 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,748 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 22:07:06,748 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 22:07:06,748 INFO L82 PathProgramCache]: Analyzing trace with hash 156161, now seen corresponding path program 1 times [2018-01-20 22:07:06,748 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,748 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,749 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,749 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,749 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:06,753 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 22:07:06,754 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:06,755 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:06,755 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:06,755 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:06,756 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:06,756 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:06,756 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:06,756 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:06,756 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 22:07:06,756 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-01-20 22:07:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-20 22:07:06,758 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,758 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:06,758 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:07:06,758 INFO L82 PathProgramCache]: Analyzing trace with hash 456996590, now seen corresponding path program 1 times [2018-01-20 22:07:06,758 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,758 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,759 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,759 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,759 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:06,764 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:06,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:06,770 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:06,770 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:06,770 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:07:06,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:07:06,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:07:06,771 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 2 states. [2018-01-20 22:07:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:06,778 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2018-01-20 22:07:06,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:07:06,778 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-01-20 22:07:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:06,780 INFO L225 Difference]: With dead ends: 155 [2018-01-20 22:07:06,780 INFO L226 Difference]: Without dead ends: 76 [2018-01-20 22:07:06,781 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 [2018-01-20 22:07:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-20 22:07:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-01-20 22:07:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-20 22:07:06,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2018-01-20 22:07:06,787 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 16 [2018-01-20 22:07:06,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:06,788 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2018-01-20 22:07:06,788 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:07:06,788 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2018-01-20 22:07:06,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-20 22:07:06,789 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,790 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:06,790 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:07:06,790 INFO L82 PathProgramCache]: Analyzing trace with hash 943494876, now seen corresponding path program 1 times [2018-01-20 22:07:06,790 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,790 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,791 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,791 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,791 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:06,805 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:06,857 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:06,857 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 22:07:06,857 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 22:07:06,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 22:07:06,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 22:07:06,858 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 4 states. [2018-01-20 22:07:06,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:06,903 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2018-01-20 22:07:06,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 22:07:06,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-01-20 22:07:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:06,904 INFO L225 Difference]: With dead ends: 115 [2018-01-20 22:07:06,904 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 22:07:06,905 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 22:07:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 22:07:06,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 22:07:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 22:07:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 22:07:06,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-01-20 22:07:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:06,906 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 22:07:06,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 22:07:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 22:07:06,907 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 22:07:06,908 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:06,909 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:06,909 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:06,909 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:06,909 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:06,909 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:06,909 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:06,909 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 22:07:06,910 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-01-20 22:07:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-20 22:07:06,912 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,912 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:06,912 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 22:07:06,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1077569315, now seen corresponding path program 1 times [2018-01-20 22:07:06,913 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,913 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,914 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,914 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,914 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:06,919 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:06,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:06,926 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:06,926 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:06,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:07:06,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:07:06,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:07:06,927 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 2 states. [2018-01-20 22:07:06,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:06,933 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2018-01-20 22:07:06,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:07:06,933 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-20 22:07:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:06,935 INFO L225 Difference]: With dead ends: 155 [2018-01-20 22:07:06,935 INFO L226 Difference]: Without dead ends: 74 [2018-01-20 22:07:06,936 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 [2018-01-20 22:07:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-20 22:07:06,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-01-20 22:07:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-20 22:07:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2018-01-20 22:07:06,942 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 14 [2018-01-20 22:07:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:06,943 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2018-01-20 22:07:06,943 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:07:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2018-01-20 22:07:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-20 22:07:06,944 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:06,944 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:06,944 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 22:07:06,945 INFO L82 PathProgramCache]: Analyzing trace with hash -137565551, now seen corresponding path program 1 times [2018-01-20 22:07:06,945 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:06,945 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:06,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,946 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:06,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:06,961 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:06,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:06,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 22:07:06,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 22:07:06,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 22:07:06,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 22:07:07,000 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 4 states. [2018-01-20 22:07:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:07,039 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2018-01-20 22:07:07,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 22:07:07,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-01-20 22:07:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:07,040 INFO L225 Difference]: With dead ends: 113 [2018-01-20 22:07:07,040 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 22:07:07,041 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-20 22:07:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 22:07:07,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 22:07:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 22:07:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 22:07:07,041 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2018-01-20 22:07:07,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:07,041 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 22:07:07,041 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 22:07:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 22:07:07,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 22:07:07,043 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:07,044 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:07,044 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:07,044 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:07,044 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:07,044 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:07,044 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:07,044 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == appendErr0EnsuresViolation======== [2018-01-20 22:07:07,044 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2018-01-20 22:07:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-20 22:07:07,047 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:07,047 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] [2018-01-20 22:07:07,047 INFO L371 AbstractCegarLoop]: === Iteration 1 === [appendErr0EnsuresViolation]=== [2018-01-20 22:07:07,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1501116752, now seen corresponding path program 1 times [2018-01-20 22:07:07,048 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:07,048 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:07,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:07,049 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:07,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:07,080 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 22:07:07,083 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:07,086 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:07,087 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:07,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 10:07:07 BoogieIcfgContainer [2018-01-20 22:07:07,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 22:07:07,094 INFO L168 Benchmark]: Toolchain (without parser) took 1932.21 ms. Allocated memory was 304.1 MB in the beginning and 462.9 MB in the end (delta: 158.9 MB). Free memory was 262.4 MB in the beginning and 327.6 MB in the end (delta: -65.2 MB). Peak memory consumption was 93.7 MB. Max. memory is 5.3 GB. [2018-01-20 22:07:07,095 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 304.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 22:07:07,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.62 ms. Allocated memory is still 304.1 MB. Free memory was 261.4 MB in the beginning and 250.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-20 22:07:07,095 INFO L168 Benchmark]: Boogie Preprocessor took 38.98 ms. Allocated memory is still 304.1 MB. Free memory was 250.4 MB in the beginning and 249.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-20 22:07:07,096 INFO L168 Benchmark]: RCFGBuilder took 379.83 ms. Allocated memory is still 304.1 MB. Free memory was 249.4 MB in the beginning and 223.9 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 5.3 GB. [2018-01-20 22:07:07,096 INFO L168 Benchmark]: TraceAbstraction took 1295.00 ms. Allocated memory was 304.1 MB in the beginning and 462.9 MB in the end (delta: 158.9 MB). Free memory was 223.9 MB in the beginning and 327.6 MB in the end (delta: -103.7 MB). Peak memory consumption was 55.2 MB. Max. memory is 5.3 GB. [2018-01-20 22:07:07,097 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 304.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.62 ms. Allocated memory is still 304.1 MB. Free memory was 261.4 MB in the beginning and 250.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.98 ms. Allocated memory is still 304.1 MB. Free memory was 250.4 MB in the beginning and 249.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 379.83 ms. Allocated memory is still 304.1 MB. Free memory was 249.4 MB in the beginning and 223.9 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1295.00 ms. Allocated memory was 304.1 MB in the beginning and 462.9 MB in the end (delta: 158.9 MB). Free memory was 223.9 MB in the beginning and 327.6 MB in the end (delta: -103.7 MB). Peak memory consumption was 55.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - 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: 538]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L571] FCALL struct node_t *list = ((void *)0); VAL [list={15:0}] [L572] int dataNotFinished = 0; VAL [dataNotFinished=0, list={15:0}] [L574] CALL append(&list) VAL [pointerToList={15:0}] [L565] EXPR, FCALL malloc(sizeof *node) VAL [malloc(sizeof *node)={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L565] struct node_t *node = malloc(sizeof *node); VAL [malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L566] EXPR, FCALL \read(**pointerToList) VAL [\read(**pointerToList)={0:0}, malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L566] FCALL node->next = *pointerToList VAL [\read(**pointerToList)={0:0}, malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L567] CALL create_data() [L539] COND FALSE !(__VERIFIER_nondet_int()) [L542] EXPR, FCALL malloc(sizeof *data) VAL [malloc(sizeof *data)={13:0}] [L542] Data data = malloc(sizeof *data); [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] FCALL data->array = ((void *)0) VAL [data={13:0}, malloc(sizeof *data)={13:0}] [L552] FCALL data->number = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, data={13:0}, malloc(sizeof *data)={13:0}] [L553] return data; VAL [\result={13:0}, data={13:0}, malloc(sizeof *data)={13:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: create_dataErr0EnsuresViolation CFG has 6 procedures, 82 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 11 SDslu, 46 SDs, 0 SdLazy, 28 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 475 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: 555]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: freeDataErr0EnsuresViolation CFG has 6 procedures, 82 locations, 6 error locations. SAFE Result, 0.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 193 SDtfs, 22 SDslu, 87 SDs, 0 SdLazy, 44 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 5557 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 6 procedures, 82 locations, 6 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=82occurred 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 6 procedures, 82 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 125 SDtfs, 11 SDslu, 44 SDs, 0 SdLazy, 23 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 2925 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 570]: 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 6 procedures, 82 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 125 SDtfs, 11 SDslu, 44 SDs, 0 SdLazy, 23 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 0.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 2651 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 - CounterExampleResult [Line: 564]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L571] FCALL struct node_t *list = ((void *)0); VAL [list={15:0}] [L572] int dataNotFinished = 0; VAL [dataNotFinished=0, list={15:0}] [L574] CALL append(&list) VAL [pointerToList={15:0}] [L565] EXPR, FCALL malloc(sizeof *node) VAL [malloc(sizeof *node)={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L565] struct node_t *node = malloc(sizeof *node); VAL [malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L566] EXPR, FCALL \read(**pointerToList) VAL [\read(**pointerToList)={0:0}, malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L566] FCALL node->next = *pointerToList VAL [\read(**pointerToList)={0:0}, malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L567] CALL, EXPR create_data() [L539] COND TRUE __VERIFIER_nondet_int() [L540] RET return ((void *)0); VAL [\result={0:0}] [L567] EXPR create_data() VAL [create_data()={0:0}, malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L567] FCALL node->data = create_data() VAL [create_data()={0:0}, malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] [L568] FCALL *pointerToList = node VAL [malloc(sizeof *node)={14:0}, node={14:0}, pointerToList={15:0}, pointerToList={15:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: appendErr0EnsuresViolation CFG has 6 procedures, 82 locations, 6 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=82occurred 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, 25 NumberOfCodeBlocks, 25 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_22-07-07-108.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_22-07-07-108.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_22-07-07-108.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_22-07-07-108.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_22-07-07-108.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-20_22-07-07-108.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/optional_data_creation_test04_false-valid-memtrack.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-20_22-07-07-108.csv Received shutdown request...