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/forester-heap/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:57:14,667 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:57:14,669 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:57:14,685 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:57:14,685 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:57:14,686 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:57:14,687 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:57:14,689 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:57:14,692 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:57:14,692 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:57:14,693 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:57:14,694 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:57:14,695 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:57:14,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:57:14,696 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:57:14,698 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:57:14,701 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:57:14,703 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:57:14,704 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:57:14,705 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:57:14,708 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-23 14:57:14,712 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:57:14,713 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:57:14,713 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 [2018-01-23 14:57:14,723 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:57:14,724 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:57:14,724 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:57:14,725 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:57:14,725 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:57:14,725 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:57:14,725 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:57:14,726 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:57:14,726 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:57:14,726 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:57:14,726 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:57:14,726 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:57:14,727 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:57:14,727 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:57:14,727 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:57:14,727 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:57:14,727 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:57:14,727 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:57:14,728 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:57:14,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:57:14,728 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:57:14,728 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:57:14,728 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:57:14,729 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:57:14,729 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:57:14,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:57:14,729 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:57:14,729 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:57:14,730 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:57:14,730 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:57:14,730 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:57:14,730 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:57:14,730 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:57:14,730 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:57:14,731 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:57:14,732 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:57:14,732 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:57:14,766 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:57:14,779 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:57:14,783 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:57:14,785 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:57:14,786 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:57:14,786 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-23 14:57:14,990 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:57:14,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:57:14,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:57:14,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:57:15,004 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:57:15,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:57:14" (1/1) ... [2018-01-23 14:57:15,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3346b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15, skipping insertion in model container [2018-01-23 14:57:15,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:57:14" (1/1) ... [2018-01-23 14:57:15,027 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:57:15,073 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:57:15,197 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:57:15,214 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:57:15,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15 WrapperNode [2018-01-23 14:57:15,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:57:15,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:57:15,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:57:15,221 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:57:15,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (1/1) ... [2018-01-23 14:57:15,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (1/1) ... [2018-01-23 14:57:15,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (1/1) ... [2018-01-23 14:57:15,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (1/1) ... [2018-01-23 14:57:15,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (1/1) ... [2018-01-23 14:57:15,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (1/1) ... [2018-01-23 14:57:15,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (1/1) ... [2018-01-23 14:57:15,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:57:15,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:57:15,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:57:15,259 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:57:15,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (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 [2018-01-23 14:57:15,305 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:57:15,306 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:57:15,306 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:57:15,306 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-23 14:57:15,306 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-23 14:57:15,306 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:57:15,306 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:57:15,307 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:57:15,307 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:57:15,307 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:57:15,307 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-23 14:57:15,307 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-23 14:57:15,307 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:57:15,308 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-23 14:57:15,308 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:57:15,308 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:57:15,308 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:57:15,634 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:57:15,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:57:15 BoogieIcfgContainer [2018-01-23 14:57:15,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:57:15,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:57:15,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:57:15,638 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:57:15,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:57:14" (1/3) ... [2018-01-23 14:57:15,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c14320b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:57:15, skipping insertion in model container [2018-01-23 14:57:15,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:57:15" (2/3) ... [2018-01-23 14:57:15,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c14320b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:57:15, skipping insertion in model container [2018-01-23 14:57:15,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:57:15" (3/3) ... [2018-01-23 14:57:15,643 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i [2018-01-23 14:57:15,653 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:57:15,661 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-23 14:57:15,709 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:57:15,709 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:57:15,709 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:57:15,710 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:57:15,710 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:57:15,710 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:57:15,710 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:57:15,710 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:57:15,711 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:57:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2018-01-23 14:57:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:57:15,737 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:15,738 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:57:15,738 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:57:15,742 INFO L82 PathProgramCache]: Analyzing trace with hash 202351, now seen corresponding path program 1 times [2018-01-23 14:57:15,744 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:15,744 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:15,791 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:15,791 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:15,791 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:57:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:57:15,837 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:57:15,842 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:57:15,848 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:57:15,848 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:57:15,848 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:57:15,848 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:57:15,848 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:57:15,848 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:57:15,849 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:57:15,849 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:57:15,849 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:57:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2018-01-23 14:57:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-23 14:57:15,854 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:15,854 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] [2018-01-23 14:57:15,854 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:57:15,854 INFO L82 PathProgramCache]: Analyzing trace with hash -579641887, now seen corresponding path program 1 times [2018-01-23 14:57:15,855 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:15,855 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:15,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:15,857 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:15,857 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:15,885 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:57:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:57:16,007 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:57:16,007 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:57:16,009 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:57:16,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:57:16,020 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:57:16,022 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2018-01-23 14:57:16,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:57:16,045 INFO L93 Difference]: Finished difference Result 117 states and 154 transitions. [2018-01-23 14:57:16,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:57:16,047 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-23 14:57:16,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:57:16,057 INFO L225 Difference]: With dead ends: 117 [2018-01-23 14:57:16,057 INFO L226 Difference]: Without dead ends: 70 [2018-01-23 14:57:16,060 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 [2018-01-23 14:57:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-23 14:57:16,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-01-23 14:57:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-23 14:57:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2018-01-23 14:57:16,094 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 20 [2018-01-23 14:57:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:57:16,095 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2018-01-23 14:57:16,095 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:57:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2018-01-23 14:57:16,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-23 14:57:16,097 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:16,097 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] [2018-01-23 14:57:16,097 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:57:16,097 INFO L82 PathProgramCache]: Analyzing trace with hash -675072438, now seen corresponding path program 1 times [2018-01-23 14:57:16,097 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:16,097 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:16,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,099 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:16,099 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:16,122 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:57:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:57:16,218 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:57:16,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:57:16,220 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:57:16,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:57:16,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:57:16,221 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 5 states. [2018-01-23 14:57:16,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:57:16,363 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2018-01-23 14:57:16,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:57:16,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-23 14:57:16,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:57:16,365 INFO L225 Difference]: With dead ends: 118 [2018-01-23 14:57:16,365 INFO L226 Difference]: Without dead ends: 99 [2018-01-23 14:57:16,367 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:57:16,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-23 14:57:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2018-01-23 14:57:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-23 14:57:16,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2018-01-23 14:57:16,425 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 29 [2018-01-23 14:57:16,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:57:16,425 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2018-01-23 14:57:16,425 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:57:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2018-01-23 14:57:16,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-23 14:57:16,427 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:16,427 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, 1, 1, 1, 1, 1, 1] [2018-01-23 14:57:16,427 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:57:16,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1367476593, now seen corresponding path program 1 times [2018-01-23 14:57:16,428 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:16,428 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:16,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,429 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:16,429 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:57:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:57:16,489 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:57:16,498 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:57:16,505 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:57:16,506 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:57:16,516 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:57:16,516 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:57:16,516 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:57:16,517 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:57:16,517 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:57:16,517 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:57:16,517 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:57:16,517 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:57:16,517 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:57:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2018-01-23 14:57:16,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-23 14:57:16,520 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:16,520 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:57:16,520 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:57:16,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1698925306, now seen corresponding path program 1 times [2018-01-23 14:57:16,521 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:16,521 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:16,522 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,522 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:16,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:16,534 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:57:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:57:16,548 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:57:16,548 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:57:16,549 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:57:16,549 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:57:16,549 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:57:16,549 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2018-01-23 14:57:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:57:16,555 INFO L93 Difference]: Finished difference Result 117 states and 154 transitions. [2018-01-23 14:57:16,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:57:16,556 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-23 14:57:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:57:16,557 INFO L225 Difference]: With dead ends: 117 [2018-01-23 14:57:16,557 INFO L226 Difference]: Without dead ends: 68 [2018-01-23 14:57:16,557 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 [2018-01-23 14:57:16,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-23 14:57:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-01-23 14:57:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-23 14:57:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2018-01-23 14:57:16,564 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 18 [2018-01-23 14:57:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:57:16,564 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2018-01-23 14:57:16,564 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:57:16,565 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2018-01-23 14:57:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-23 14:57:16,566 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:16,566 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] [2018-01-23 14:57:16,566 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-23 14:57:16,566 INFO L82 PathProgramCache]: Analyzing trace with hash -456567889, now seen corresponding path program 1 times [2018-01-23 14:57:16,566 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:16,566 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:16,567 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,568 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:16,568 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:16,577 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:57:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:57:16,630 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:57:16,631 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:57:16,631 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:57:16,631 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:57:16,631 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:57:16,632 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 5 states. [2018-01-23 14:57:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:57:16,827 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2018-01-23 14:57:16,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:57:16,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-01-23 14:57:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:57:16,829 INFO L225 Difference]: With dead ends: 114 [2018-01-23 14:57:16,829 INFO L226 Difference]: Without dead ends: 97 [2018-01-23 14:57:16,830 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:57:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-23 14:57:16,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 72. [2018-01-23 14:57:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-01-23 14:57:16,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2018-01-23 14:57:16,838 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 27 [2018-01-23 14:57:16,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:57:16,838 INFO L432 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2018-01-23 14:57:16,838 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:57:16,838 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2018-01-23 14:57:16,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-23 14:57:16,840 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:16,840 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, 1, 1, 1, 1] [2018-01-23 14:57:16,840 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-23 14:57:16,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1118740172, now seen corresponding path program 1 times [2018-01-23 14:57:16,841 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:16,841 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:16,842 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,842 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:16,842 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:16,859 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:57:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:57:17,026 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:57:17,026 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP 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 [2018-01-23 14:57:17,040 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:17,077 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:57:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:57:17,237 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:57:17,237 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2018-01-23 14:57:17,238 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-23 14:57:17,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-23 14:57:17,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=50, Unknown=5, NotChecked=0, Total=72 [2018-01-23 14:57:17,238 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand 9 states. [2018-01-23 14:57:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:57:17,707 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2018-01-23 14:57:17,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-23 14:57:17,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2018-01-23 14:57:17,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:57:17,709 INFO L225 Difference]: With dead ends: 128 [2018-01-23 14:57:17,709 INFO L226 Difference]: Without dead ends: 125 [2018-01-23 14:57:17,710 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=110, Unknown=5, NotChecked=0, Total=156 [2018-01-23 14:57:17,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-23 14:57:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 108. [2018-01-23 14:57:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-01-23 14:57:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2018-01-23 14:57:17,721 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 41 [2018-01-23 14:57:17,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:57:17,721 INFO L432 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2018-01-23 14:57:17,722 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-23 14:57:17,722 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2018-01-23 14:57:17,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-23 14:57:17,724 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:17,724 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, 1, 1, 1, 1, 1, 1] [2018-01-23 14:57:17,724 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-23 14:57:17,724 INFO L82 PathProgramCache]: Analyzing trace with hash -152877011, now seen corresponding path program 1 times [2018-01-23 14:57:17,725 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:17,725 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:17,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:17,727 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:17,727 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:17,742 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:57:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:57:17,848 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:57:17,849 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:57:17,860 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:17,887 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:57:17,916 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-01-23 14:57:17,921 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-01-23 14:57:17,922 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-23 14:57:17,924 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-23 14:57:17,925 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-23 14:57:17,925 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2018-01-23 14:57:17,941 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2018-01-23 14:57:17,949 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2018-01-23 14:57:17,949 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-23 14:57:17,951 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-23 14:57:17,952 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-01-23 14:57:17,953 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2018-01-23 14:57:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:57:18,001 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:57:18,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2018-01-23 14:57:18,001 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-23 14:57:18,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-23 14:57:18,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:57:18,002 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand 9 states. [2018-01-23 14:57:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:57:18,398 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2018-01-23 14:57:18,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-23 14:57:18,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-01-23 14:57:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:57:18,400 INFO L225 Difference]: With dead ends: 198 [2018-01-23 14:57:18,400 INFO L226 Difference]: Without dead ends: 156 [2018-01-23 14:57:18,401 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-01-23 14:57:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-23 14:57:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 131. [2018-01-23 14:57:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-01-23 14:57:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2018-01-23 14:57:18,413 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 43 [2018-01-23 14:57:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:57:18,414 INFO L432 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2018-01-23 14:57:18,414 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-23 14:57:18,414 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2018-01-23 14:57:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-23 14:57:18,416 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:57:18,416 INFO L322 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 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] [2018-01-23 14:57:18,416 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-23 14:57:18,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1919622631, now seen corresponding path program 2 times [2018-01-23 14:57:18,417 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:57:18,417 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:57:18,418 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:18,418 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:57:18,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:57:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:57:18,432 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:57:18,482 ERROR L119 erpolLogProxyWrapper]: Interpolant 25 not inductive: (Check returned sat) [2018-01-23 14:57:18,493 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:1003) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:218) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:157) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-23 14:57:18,496 INFO L168 Benchmark]: Toolchain (without parser) took 3505.52 ms. Allocated memory was 307.2 MB in the beginning and 482.3 MB in the end (delta: 175.1 MB). Free memory was 265.5 MB in the beginning and 350.2 MB in the end (delta: -84.6 MB). Peak memory consumption was 90.5 MB. Max. memory is 5.3 GB. [2018-01-23 14:57:18,498 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 307.2 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:57:18,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.27 ms. Allocated memory is still 307.2 MB. Free memory was 264.5 MB in the beginning and 252.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:57:18,498 INFO L168 Benchmark]: Boogie Preprocessor took 36.79 ms. Allocated memory is still 307.2 MB. Free memory was 252.5 MB in the beginning and 250.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:57:18,499 INFO L168 Benchmark]: RCFGBuilder took 376.53 ms. Allocated memory is still 307.2 MB. Free memory was 250.5 MB in the beginning and 226.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 5.3 GB. [2018-01-23 14:57:18,499 INFO L168 Benchmark]: TraceAbstraction took 2859.41 ms. Allocated memory was 307.2 MB in the beginning and 482.3 MB in the end (delta: 175.1 MB). Free memory was 226.9 MB in the beginning and 350.2 MB in the end (delta: -123.3 MB). Peak memory consumption was 51.8 MB. Max. memory is 5.3 GB. [2018-01-23 14:57:18,501 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 307.2 MB. Free memory is still 271.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 224.27 ms. Allocated memory is still 307.2 MB. Free memory was 264.5 MB in the beginning and 252.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.79 ms. Allocated memory is still 307.2 MB. Free memory was 252.5 MB in the beginning and 250.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 376.53 ms. Allocated memory is still 307.2 MB. Free memory was 250.5 MB in the beginning and 226.9 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2859.41 ms. Allocated memory was 307.2 MB in the beginning and 482.3 MB in the end (delta: 175.1 MB). Free memory was 226.9 MB in the beginning and 350.2 MB in the end (delta: -123.3 MB). Peak memory consumption was 51.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 3 procedures, 73 locations, 3 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=73occurred 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 - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L995] EXPR, FCALL malloc(sizeof(SLL)) VAL [malloc(sizeof(SLL))={10:0}] [L995] SLL* list = malloc(sizeof(SLL)); VAL [list={10:0}, malloc(sizeof(SLL))={10:0}] [L996] FCALL list->next = ((void*)0) VAL [list={10:0}, malloc(sizeof(SLL))={10:0}] [L997] FCALL list->colour = BLACK VAL [list={10:0}, malloc(sizeof(SLL))={10:0}] [L999] SLL* end = list; VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1023] end = ((void*)0) [L1024] end = list VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1027] COND FALSE !(!(((void*)0) != end)) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1027] COND FALSE !(0) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1028] EXPR, FCALL end->colour VAL [end={10:0}, end->colour=1, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1028] COND FALSE !(!(BLACK == end->colour)) [L1028] COND FALSE !(0) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1030] COND TRUE ((void*)0) != end VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1032] EXPR, FCALL end->colour VAL [end={10:0}, end->colour=1, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1032] COND FALSE !(RED == end->colour) [L1039] EXPR, FCALL end->next VAL [end={10:0}, end->next={0:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1039] end = end->next [L1030] COND FALSE !(((void*)0) != end) VAL [end={0:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1043] COND TRUE ((void*)0) != list VAL [end={0:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1045] EXPR, FCALL list->colour VAL [end={0:0}, list={10:0}, list->colour=1, malloc(sizeof(SLL))={10:0}] [L1045] COND FALSE !(RED == list->colour) [L1054] EXPR, FCALL list->next VAL [end={0:0}, list={10:0}, list->next={0:0}, malloc(sizeof(SLL))={10:0}] [L1054] end = list->next [L1055] FCALL free(list) VAL [end={0:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1056] list = end VAL [end={0:0}, list={0:0}, malloc(sizeof(SLL))={10:0}] [L1043] COND FALSE !(((void*)0) != list) VAL [end={0:0}, list={0:0}, malloc(sizeof(SLL))={10:0}] [L1060] return 0; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 73 locations, 3 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 134 SDtfs, 179 SDslu, 56 SDs, 0 SdLazy, 62 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, 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, 25 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 2573 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 - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:1003) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-57-18-510.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-57-18-510.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-rb-cnstr_1_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-57-18-510.csv Received shutdown request...