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/array-memsafety/lis_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 21:54:35,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 21:54:35,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 21:54:35,590 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 21:54:35,590 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 21:54:35,591 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 21:54:35,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 21:54:35,595 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 21:54:35,597 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 21:54:35,597 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 21:54:35,598 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 21:54:35,598 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 21:54:35,599 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 21:54:35,601 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 21:54:35,602 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 21:54:35,605 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 21:54:35,607 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 21:54:35,609 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 21:54:35,610 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 21:54:35,655 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 21:54:35,657 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-20 21:54:35,662 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 21:54:35,663 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 21:54:35,663 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 21:54:35,672 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 21:54:35,672 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 21:54:35,673 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 21:54:35,673 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 21:54:35,673 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 21:54:35,673 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 21:54:35,673 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 21:54:35,674 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 21:54:35,674 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 21:54:35,674 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 21:54:35,674 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 21:54:35,674 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 21:54:35,674 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 21:54:35,675 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 21:54:35,675 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 21:54:35,675 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 21:54:35,675 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 21:54:35,675 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 21:54:35,675 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 21:54:35,675 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 21:54:35,676 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 21:54:35,676 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 21:54:35,676 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 21:54:35,676 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 21:54:35,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 21:54:35,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 21:54:35,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 21:54:35,677 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 21:54:35,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 21:54:35,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 21:54:35,677 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 21:54:35,677 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 21:54:35,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 21:54:35,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 21:54:35,678 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 21:54:35,678 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 21:54:35,678 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 21:54:35,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 21:54:35,724 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 21:54:35,729 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 21:54:35,730 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 21:54:35,731 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 21:54:35,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/lis_unsafe_false-valid-deref.i [2018-01-20 21:54:35,898 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 21:54:35,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 21:54:35,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 21:54:35,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 21:54:35,909 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 21:54:35,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:54:35" (1/1) ... [2018-01-20 21:54:35,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b09386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:35, skipping insertion in model container [2018-01-20 21:54:35,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:54:35" (1/1) ... [2018-01-20 21:54:35,927 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:54:35,967 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:54:36,082 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:54:36,098 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:54:36,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36 WrapperNode [2018-01-20 21:54:36,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 21:54:36,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 21:54:36,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 21:54:36,104 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 21:54:36,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (1/1) ... [2018-01-20 21:54:36,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (1/1) ... [2018-01-20 21:54:36,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (1/1) ... [2018-01-20 21:54:36,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (1/1) ... [2018-01-20 21:54:36,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (1/1) ... [2018-01-20 21:54:36,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (1/1) ... [2018-01-20 21:54:36,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (1/1) ... [2018-01-20 21:54:36,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 21:54:36,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 21:54:36,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 21:54:36,138 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 21:54:36,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (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 21:54:36,182 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 21:54:36,182 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 21:54:36,183 INFO L136 BoogieDeclarations]: Found implementation of procedure lis [2018-01-20 21:54:36,183 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 21:54:36,183 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 21:54:36,183 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 21:54:36,183 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 21:54:36,183 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 21:54:36,184 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 21:54:36,184 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-20 21:54:36,184 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 21:54:36,184 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 21:54:36,184 INFO L128 BoogieDeclarations]: Found specification of procedure lis [2018-01-20 21:54:36,184 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 21:54:36,185 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 21:54:36,185 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 21:54:36,430 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 21:54:36,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:54:36 BoogieIcfgContainer [2018-01-20 21:54:36,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 21:54:36,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 21:54:36,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 21:54:36,435 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 21:54:36,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:54:35" (1/3) ... [2018-01-20 21:54:36,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a79ff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:54:36, skipping insertion in model container [2018-01-20 21:54:36,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:36" (2/3) ... [2018-01-20 21:54:36,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a79ff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:54:36, skipping insertion in model container [2018-01-20 21:54:36,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:54:36" (3/3) ... [2018-01-20 21:54:36,438 INFO L105 eAbstractionObserver]: Analyzing ICFG lis_unsafe_false-valid-deref.i [2018-01-20 21:54:36,444 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 21:54:36,450 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-20 21:54:36,494 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:36,494 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:36,494 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:36,494 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:36,495 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:36,495 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:36,495 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:36,495 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 21:54:36,496 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-01-20 21:54:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 21:54:36,522 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:36,523 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 21:54:36,523 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 21:54:36,527 INFO L82 PathProgramCache]: Analyzing trace with hash 135503, now seen corresponding path program 1 times [2018-01-20 21:54:36,528 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:36,529 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:36,571 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:36,571 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:36,571 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:36,622 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:54:36,628 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:36,634 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:36,634 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:36,634 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:36,634 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:36,635 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:36,635 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:36,635 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:36,635 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == lisErr0EnsuresViolation======== [2018-01-20 21:54:36,635 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-01-20 21:54:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-20 21:54:36,638 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:36,638 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 21:54:36,638 INFO L371 AbstractCegarLoop]: === Iteration 1 === [lisErr0EnsuresViolation]=== [2018-01-20 21:54:36,638 INFO L82 PathProgramCache]: Analyzing trace with hash 642040304, now seen corresponding path program 1 times [2018-01-20 21:54:36,638 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:36,638 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:36,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:36,640 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:36,640 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:36,669 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:54:36,715 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 21:54:36,718 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:36,718 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:54:36,719 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:54:36,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:54:36,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:54:36,732 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-01-20 21:54:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:36,838 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2018-01-20 21:54:36,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:54:36,839 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-20 21:54:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:36,849 INFO L225 Difference]: With dead ends: 98 [2018-01-20 21:54:36,849 INFO L226 Difference]: Without dead ends: 49 [2018-01-20 21:54:36,852 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 21:54:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-01-20 21:54:36,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-01-20 21:54:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-20 21:54:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2018-01-20 21:54:36,887 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 21 [2018-01-20 21:54:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:36,887 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2018-01-20 21:54:36,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:54:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2018-01-20 21:54:36,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-20 21:54:36,888 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:36,888 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] [2018-01-20 21:54:36,889 INFO L371 AbstractCegarLoop]: === Iteration 2 === [lisErr0EnsuresViolation]=== [2018-01-20 21:54:36,889 INFO L82 PathProgramCache]: Analyzing trace with hash -669511868, now seen corresponding path program 1 times [2018-01-20 21:54:36,889 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:36,889 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:36,890 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:36,890 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:36,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:36,922 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:54:37,296 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 21:54:37,296 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:37,296 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-20 21:54:37,298 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-20 21:54:37,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-20 21:54:37,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-20 21:54:37,299 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 8 states. [2018-01-20 21:54:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:37,637 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-01-20 21:54:37,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-20 21:54:37,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-01-20 21:54:37,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:37,638 INFO L225 Difference]: With dead ends: 49 [2018-01-20 21:54:37,638 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:54:37,639 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-01-20 21:54:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:54:37,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:54:37,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:54:37,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:54:37,641 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-01-20 21:54:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:37,641 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:54:37,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-20 21:54:37,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:54:37,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:54:37,645 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:37,645 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:37,645 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:37,645 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:37,645 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:37,645 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:37,646 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:37,646 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 21:54:37,646 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-01-20 21:54:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-20 21:54:37,650 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:37,650 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] [2018-01-20 21:54:37,650 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:37,651 INFO L82 PathProgramCache]: Analyzing trace with hash 434696604, now seen corresponding path program 1 times [2018-01-20 21:54:37,651 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:37,651 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:37,652 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:37,652 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:37,652 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:37,665 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:54:37,680 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 21:54:37,680 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:37,681 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:54:37,681 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:54:37,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:54:37,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:54:37,681 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-01-20 21:54:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:37,688 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2018-01-20 21:54:37,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:54:37,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-20 21:54:37,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:37,689 INFO L225 Difference]: With dead ends: 98 [2018-01-20 21:54:37,690 INFO L226 Difference]: Without dead ends: 54 [2018-01-20 21:54:37,690 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 21:54:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-01-20 21:54:37,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-01-20 21:54:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 21:54:37,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2018-01-20 21:54:37,698 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 26 [2018-01-20 21:54:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:37,698 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2018-01-20 21:54:37,698 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:54:37,699 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2018-01-20 21:54:37,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-20 21:54:37,700 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:37,700 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] [2018-01-20 21:54:37,700 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:37,700 INFO L82 PathProgramCache]: Analyzing trace with hash -2005608248, now seen corresponding path program 1 times [2018-01-20 21:54:37,701 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:37,701 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:37,702 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:37,702 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:37,702 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:37,747 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:54:37,756 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:37,762 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:37,763 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:37,763 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:37,780 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:37,781 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:37,781 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:37,781 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:37,781 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:37,781 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:37,781 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:37,781 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 21:54:37,781 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:37,783 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-01-20 21:54:37,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-20 21:54:37,784 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:37,785 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] [2018-01-20 21:54:37,785 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:37,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1533411526, now seen corresponding path program 1 times [2018-01-20 21:54:37,785 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:37,785 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:37,786 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:37,786 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:37,787 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:37,799 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:54:37,810 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 21:54:37,811 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:37,811 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:54:37,812 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 21:54:37,812 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 21:54:37,812 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 21:54:37,812 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-01-20 21:54:37,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:37,818 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2018-01-20 21:54:37,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 21:54:37,818 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-01-20 21:54:37,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:37,820 INFO L225 Difference]: With dead ends: 98 [2018-01-20 21:54:37,820 INFO L226 Difference]: Without dead ends: 52 [2018-01-20 21:54:37,820 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 21:54:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-20 21:54:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-01-20 21:54:37,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 21:54:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2018-01-20 21:54:37,825 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 24 [2018-01-20 21:54:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:37,826 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2018-01-20 21:54:37,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 21:54:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2018-01-20 21:54:37,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 21:54:37,827 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:37,827 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 21:54:37,827 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:37,827 INFO L82 PathProgramCache]: Analyzing trace with hash 400147186, now seen corresponding path program 1 times [2018-01-20 21:54:37,827 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:37,827 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:37,828 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:37,828 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:37,828 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:37,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 21:54:37,871 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 21:54:37,872 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:37,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 21:54:37,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 21:54:37,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 21:54:37,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 21:54:37,873 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 3 states. [2018-01-20 21:54:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:37,893 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2018-01-20 21:54:37,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 21:54:37,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-01-20 21:54:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:37,897 INFO L225 Difference]: With dead ends: 52 [2018-01-20 21:54:37,897 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:54:37,897 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:54:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:54:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:54:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:54:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:54:37,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-01-20 21:54:37,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:37,899 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:54:37,899 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 21:54:37,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:54:37,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:54:37,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:54:37 BoogieIcfgContainer [2018-01-20 21:54:37,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 21:54:37,903 INFO L168 Benchmark]: Toolchain (without parser) took 2004.93 ms. Allocated memory was 300.9 MB in the beginning and 457.7 MB in the end (delta: 156.8 MB). Free memory was 258.3 MB in the beginning and 330.8 MB in the end (delta: -72.6 MB). Peak memory consumption was 84.2 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:37,905 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 300.9 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 21:54:37,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.95 ms. Allocated memory is still 300.9 MB. Free memory was 258.3 MB in the beginning and 248.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:37,905 INFO L168 Benchmark]: Boogie Preprocessor took 33.10 ms. Allocated memory is still 300.9 MB. Free memory was 248.3 MB in the beginning and 246.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:37,906 INFO L168 Benchmark]: RCFGBuilder took 294.97 ms. Allocated memory is still 300.9 MB. Free memory was 246.3 MB in the beginning and 225.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:37,906 INFO L168 Benchmark]: TraceAbstraction took 1469.04 ms. Allocated memory was 300.9 MB in the beginning and 457.7 MB in the end (delta: 156.8 MB). Free memory was 225.7 MB in the beginning and 330.8 MB in the end (delta: -105.1 MB). Peak memory consumption was 51.6 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:37,908 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 300.9 MB. Free memory is still 264.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 200.95 ms. Allocated memory is still 300.9 MB. Free memory was 258.3 MB in the beginning and 248.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.10 ms. Allocated memory is still 300.9 MB. Free memory was 248.3 MB in the beginning and 246.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 294.97 ms. Allocated memory is still 300.9 MB. Free memory was 246.3 MB in the beginning and 225.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1469.04 ms. Allocated memory was 300.9 MB in the beginning and 457.7 MB in the end (delta: 156.8 MB). Free memory was 225.7 MB in the beginning and 330.8 MB in the end (delta: -105.1 MB). Peak memory consumption was 51.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 58 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: lisErr0EnsuresViolation CFG has 4 procedures, 58 locations, 4 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 77 SDslu, 127 SDs, 0 SdLazy, 110 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 0.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 8082 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: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L559] int *a; [L560] int N = __VERIFIER_nondet_int(); [L561] CALL, EXPR lis(a, N) VAL [\old(N)=0, a={3:5}] [L542] int *best, *prev, i, j, max = 0; VAL [\old(N)=0, a={3:5}, a={3:5}, max=0, N=0] [L543] EXPR, FCALL malloc(sizeof(int) * N) VAL [\old(N)=0, a={3:5}, a={3:5}, malloc(sizeof(int) * N)={4:0}, max=0, N=0] [L543] best = (int*) malloc(sizeof(int) * N) VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, malloc(sizeof(int) * N)={4:0}, max=0, N=0] [L544] EXPR, FCALL malloc(sizeof(int) * N) VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0] [L544] prev = (int*) malloc(sizeof(int) * N) [L545] i = 0 VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, i=0, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L545] COND FALSE !(i < N) VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, i=0, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L547] i = 1 VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, i=1, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L547] COND FALSE !(i < N) VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, i=1, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L551] i = 0 VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, i=0, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L551] COND FALSE !(i < N) VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, i=0, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L554] FCALL free(best) VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, i=0, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L555] FCALL free(prev) VAL [\old(N)=0, a={3:5}, a={3:5}, best={4:0}, i=0, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L556] RET return max; VAL [\old(N)=0, \result=0, a={3:5}, a={3:5}, best={4:0}, i=0, malloc(sizeof(int) * N)={4:0}, malloc(sizeof(int) * N)={6:0}, max=0, N=0, prev={6:0}] [L561] EXPR lis(a, N) VAL [a={3:5}, lis(a, N)=0, N=0] [L561] return lis(a, N); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 58 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 625 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: 558]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 58 locations, 4 error locations. SAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 118 SDtfs, 1 SDslu, 42 SDs, 0 SdLazy, 9 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1465 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lis_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_21-54-37-918.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lis_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_21-54-37-918.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lis_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_21-54-37-918.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lis_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_21-54-37-918.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lis_unsafe_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_21-54-37-918.csv Received shutdown request...