java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test5_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 10:41:59,476 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 10:41:59,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 10:41:59,492 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 10:41:59,493 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 10:41:59,493 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 10:41:59,495 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 10:41:59,498 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 10:41:59,500 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 10:41:59,500 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 10:41:59,501 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-21 10:41:59,522 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-21 10:41:59,532 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 10:41:59,532 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 10:41:59,533 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 10:41:59,534 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 10:41:59,534 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 10:41:59,534 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 10:41:59,534 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 10:41:59,534 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 10:41:59,535 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 10:41:59,535 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 10:41:59,536 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 10:41:59,536 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 10:41:59,536 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 10:41:59,536 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 10:41:59,536 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 10:41:59,536 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 10:41:59,537 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 10:41:59,537 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 10:41:59,537 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 10:41:59,537 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 10:41:59,537 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 10:41:59,538 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 10:41:59,538 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 10:41:59,538 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 10:41:59,538 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 10:41:59,539 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 10:41:59,539 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:41:59,539 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 10:41:59,539 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 10:41:59,539 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 10:41:59,540 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 10:41:59,540 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 10:41:59,540 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 10:41:59,540 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 10:41:59,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 10:41:59,541 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 10:41:59,541 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 10:41:59,542 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 10:41:59,542 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 10:41:59,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 10:41:59,592 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 10:41:59,597 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 10:41:59,599 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 10:41:59,599 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 10:41:59,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test5_true-valid-memsafety_true-termination.i [2018-01-21 10:41:59,775 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 10:41:59,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 10:41:59,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 10:41:59,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 10:41:59,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 10:41:59,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:41:59,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cf31ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59, skipping insertion in model container [2018-01-21 10:41:59,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:41:59,811 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:41:59,864 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 10:41:59,972 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:41:59,984 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 10:41:59,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59 WrapperNode [2018-01-21 10:41:59,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 10:41:59,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 10:41:59,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 10:41:59,993 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 10:42:00,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:42:00,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:42:00,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:42:00,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:42:00,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:42:00,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:42:00,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (1/1) ... [2018-01-21 10:42:00,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 10:42:00,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 10:42:00,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 10:42:00,034 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 10:42:00,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 10:42:00,083 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 10:42:00,083 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 10:42:00,083 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-21 10:42:00,083 INFO L136 BoogieDeclarations]: Found implementation of procedure h5 [2018-01-21 10:42:00,084 INFO L136 BoogieDeclarations]: Found implementation of procedure g5 [2018-01-21 10:42:00,084 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-21 10:42:00,084 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 10:42:00,084 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 10:42:00,084 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 10:42:00,084 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 10:42:00,085 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 10:42:00,085 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 10:42:00,085 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 10:42:00,085 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-21 10:42:00,085 INFO L128 BoogieDeclarations]: Found specification of procedure h5 [2018-01-21 10:42:00,085 INFO L128 BoogieDeclarations]: Found specification of procedure g5 [2018-01-21 10:42:00,086 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-21 10:42:00,086 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 10:42:00,086 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 10:42:00,086 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 10:42:00,284 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 10:42:00,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:42:00 BoogieIcfgContainer [2018-01-21 10:42:00,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 10:42:00,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 10:42:00,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 10:42:00,287 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 10:42:00,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 10:41:59" (1/3) ... [2018-01-21 10:42:00,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d7f08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:42:00, skipping insertion in model container [2018-01-21 10:42:00,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 10:41:59" (2/3) ... [2018-01-21 10:42:00,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d7f08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 10:42:00, skipping insertion in model container [2018-01-21 10:42:00,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 10:42:00" (3/3) ... [2018-01-21 10:42:00,291 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test5_true-valid-memsafety_true-termination.i [2018-01-21 10:42:00,297 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 10:42:00,303 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-01-21 10:42:00,354 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:00,354 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:00,354 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:00,354 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:00,355 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:00,355 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:00,355 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:00,355 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-21 10:42:00,356 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:42:00,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-21 10:42:00,380 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:00,381 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:42:00,381 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 10:42:00,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1245989314, now seen corresponding path program 1 times [2018-01-21 10:42:00,387 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:00,436 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,436 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:00,436 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,436 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:42:00,488 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:42:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:42:00,551 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:42:00,551 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:42:00,552 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:42:00,554 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:42:00,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:42:00,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:00,568 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:42:00,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:42:00,753 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:42:00,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:42:00,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-21 10:42:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:42:00,767 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:42:00,767 INFO L226 Difference]: Without dead ends: 14 [2018-01-21 10:42:00,772 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:00,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-01-21 10:42:00,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-01-21 10:42:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-01-21 10:42:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-01-21 10:42:00,809 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-01-21 10:42:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:42:00,810 INFO L432 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-01-21 10:42:00,810 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:42:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-01-21 10:42:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-21 10:42:00,811 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:00,811 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:42:00,811 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-21 10:42:00,812 INFO L82 PathProgramCache]: Analyzing trace with hash 900052320, now seen corresponding path program 1 times [2018-01-21 10:42:00,812 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:00,813 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,814 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:00,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,814 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:00,871 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:42:00,879 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,881 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,890 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:00,891 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:00,891 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:00,891 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:00,891 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:00,891 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:00,891 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:00,891 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 10:42:00,891 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:42:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 10:42:00,893 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:00,893 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 10:42:00,893 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 10:42:00,893 INFO L82 PathProgramCache]: Analyzing trace with hash 70987, now seen corresponding path program 1 times [2018-01-21 10:42:00,893 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:00,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,895 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:00,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,896 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:00,905 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:42:00,906 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,908 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:00,909 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:00,909 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:00,909 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:00,909 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:00,909 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:00,909 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:00,909 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 10:42:00,909 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:00,911 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:42:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-21 10:42:00,913 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:00,913 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] [2018-01-21 10:42:00,913 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 10:42:00,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2050599687, now seen corresponding path program 1 times [2018-01-21 10:42:00,914 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:00,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,916 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:00,916 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,916 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 10:42:00,956 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 10:42:00,958 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,959 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,959 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,960 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,960 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,961 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,961 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 10:42:00,964 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:00,964 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:00,964 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:00,964 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:00,964 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:00,964 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:00,964 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:00,964 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 10:42:00,964 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:00,965 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:42:00,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 10:42:00,966 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:00,967 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] [2018-01-21 10:42:00,967 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 10:42:00,967 INFO L82 PathProgramCache]: Analyzing trace with hash -104927001, now seen corresponding path program 1 times [2018-01-21 10:42:00,967 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:00,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,969 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:00,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:00,969 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:42:00,981 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:42:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:42:01,039 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:42:01,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:42:01,039 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:42:01,040 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:42:01,040 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:42:01,040 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:01,040 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:42:01,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:42:01,101 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:42:01,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:42:01,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-01-21 10:42:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:42:01,102 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:42:01,102 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:42:01,103 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:42:01,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:42:01,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:42:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:42:01,104 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2018-01-21 10:42:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:42:01,104 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:42:01,104 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:42:01,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:42:01,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:42:01,107 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:01,107 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:01,107 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:01,107 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:01,107 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:01,108 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:01,108 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:01,108 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == h5Err0EnsuresViolation======== [2018-01-21 10:42:01,108 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:42:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-21 10:42:01,110 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:01,111 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:42:01,111 INFO L371 AbstractCegarLoop]: === Iteration 1 === [h5Err0EnsuresViolation]=== [2018-01-21 10:42:01,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2134695694, now seen corresponding path program 1 times [2018-01-21 10:42:01,111 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:01,113 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,114 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:01,114 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,114 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:42:01,125 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:42:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:42:01,150 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:42:01,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:42:01,150 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:42:01,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:42:01,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:42:01,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:01,151 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:42:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:42:01,218 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:42:01,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:42:01,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-01-21 10:42:01,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:42:01,218 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:42:01,219 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:42:01,219 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 [2018-01-21 10:42:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:42:01,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:42:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:42:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:42:01,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-01-21 10:42:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:42:01,220 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:42:01,220 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:42:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:42:01,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:42:01,222 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:01,222 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:01,222 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:01,222 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:01,222 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:01,222 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:01,223 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:01,223 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-21 10:42:01,223 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:42:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-21 10:42:01,225 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:01,225 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:42:01,225 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-21 10:42:01,226 INFO L82 PathProgramCache]: Analyzing trace with hash 312739629, now seen corresponding path program 1 times [2018-01-21 10:42:01,226 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:01,227 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,227 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:01,227 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,228 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:42:01,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:42:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:42:01,282 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:42:01,282 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:42:01,282 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:42:01,282 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:42:01,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:42:01,283 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:01,283 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:42:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:42:01,326 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:42:01,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:42:01,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-01-21 10:42:01,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:42:01,327 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:42:01,327 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:42:01,328 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:42:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:42:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:42:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:42:01,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-01-21 10:42:01,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:42:01,328 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:42:01,329 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:42:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:42:01,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:42:01,330 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 10:42:01,330 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 10:42:01,330 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 10:42:01,330 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 10:42:01,330 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 10:42:01,330 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 10:42:01,330 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 10:42:01,330 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == g5Err0EnsuresViolation======== [2018-01-21 10:42:01,330 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 10:42:01,331 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-01-21 10:42:01,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 10:42:01,332 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:01,332 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 10:42:01,332 INFO L371 AbstractCegarLoop]: === Iteration 1 === [g5Err0EnsuresViolation]=== [2018-01-21 10:42:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1313639590, now seen corresponding path program 1 times [2018-01-21 10:42:01,332 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:01,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,333 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:01,333 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,334 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:42:01,343 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:42:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:42:01,371 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:42:01,371 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 10:42:01,371 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:42:01,371 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 10:42:01,372 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 10:42:01,372 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:01,372 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2018-01-21 10:42:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:42:01,435 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-01-21 10:42:01,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 10:42:01,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-21 10:42:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:42:01,437 INFO L225 Difference]: With dead ends: 41 [2018-01-21 10:42:01,437 INFO L226 Difference]: Without dead ends: 25 [2018-01-21 10:42:01,438 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 10:42:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-01-21 10:42:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-01-21 10:42:01,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 10:42:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-01-21 10:42:01,441 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2018-01-21 10:42:01,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:42:01,441 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-01-21 10:42:01,442 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 10:42:01,442 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-01-21 10:42:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 10:42:01,442 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:01,442 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] [2018-01-21 10:42:01,442 INFO L371 AbstractCegarLoop]: === Iteration 2 === [g5Err0EnsuresViolation]=== [2018-01-21 10:42:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2068124648, now seen corresponding path program 1 times [2018-01-21 10:42:01,443 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:01,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,444 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:01,444 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,444 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:42:01,453 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:42:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:42:01,595 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:42:01,596 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-21 10:42:01,596 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:42:01,596 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-21 10:42:01,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-21 10:42:01,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-01-21 10:42:01,597 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2018-01-21 10:42:01,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:42:01,658 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2018-01-21 10:42:01,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 10:42:01,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-01-21 10:42:01,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:42:01,660 INFO L225 Difference]: With dead ends: 36 [2018-01-21 10:42:01,660 INFO L226 Difference]: Without dead ends: 24 [2018-01-21 10:42:01,661 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-21 10:42:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-01-21 10:42:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-01-21 10:42:01,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-21 10:42:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2018-01-21 10:42:01,666 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2018-01-21 10:42:01,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:42:01,666 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2018-01-21 10:42:01,666 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-21 10:42:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2018-01-21 10:42:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 10:42:01,667 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 10:42:01,668 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] [2018-01-21 10:42:01,668 INFO L371 AbstractCegarLoop]: === Iteration 3 === [g5Err0EnsuresViolation]=== [2018-01-21 10:42:01,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1982732102, now seen corresponding path program 1 times [2018-01-21 10:42:01,668 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 10:42:01,669 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,670 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 10:42:01,670 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 10:42:01,670 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 10:42:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 10:42:01,681 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 10:42:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 10:42:01,708 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 10:42:01,708 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 10:42:01,708 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 10:42:01,709 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 10:42:01,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 10:42:01,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 10:42:01,709 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 4 states. [2018-01-21 10:42:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 10:42:01,733 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2018-01-21 10:42:01,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 10:42:01,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-01-21 10:42:01,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 10:42:01,734 INFO L225 Difference]: With dead ends: 24 [2018-01-21 10:42:01,735 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 10:42:01,735 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 10:42:01,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 10:42:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 10:42:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 10:42:01,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 10:42:01,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-01-21 10:42:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 10:42:01,737 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 10:42:01,737 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 10:42:01,737 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 10:42:01,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 10:42:01,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 10:42:01 BoogieIcfgContainer [2018-01-21 10:42:01,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 10:42:01,741 INFO L168 Benchmark]: Toolchain (without parser) took 1965.14 ms. Allocated memory was 305.7 MB in the beginning and 466.6 MB in the end (delta: 161.0 MB). Free memory was 264.6 MB in the beginning and 333.2 MB in the end (delta: -68.6 MB). Peak memory consumption was 92.3 MB. Max. memory is 5.3 GB. [2018-01-21 10:42:01,743 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 305.7 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:42:01,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.75 ms. Allocated memory is still 305.7 MB. Free memory was 264.6 MB in the beginning and 250.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-01-21 10:42:01,743 INFO L168 Benchmark]: Boogie Preprocessor took 40.59 ms. Allocated memory is still 305.7 MB. Free memory is still 250.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 10:42:01,744 INFO L168 Benchmark]: RCFGBuilder took 251.17 ms. Allocated memory is still 305.7 MB. Free memory was 250.6 MB in the beginning and 235.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-01-21 10:42:01,744 INFO L168 Benchmark]: TraceAbstraction took 1454.70 ms. Allocated memory was 305.7 MB in the beginning and 466.6 MB in the end (delta: 161.0 MB). Free memory was 233.7 MB in the beginning and 333.2 MB in the end (delta: -99.5 MB). Peak memory consumption was 61.4 MB. Max. memory is 5.3 GB. [2018-01-21 10:42:01,746 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 305.7 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 210.75 ms. Allocated memory is still 305.7 MB. Free memory was 264.6 MB in the beginning and 250.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.59 ms. Allocated memory is still 305.7 MB. Free memory is still 250.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 251.17 ms. Allocated memory is still 305.7 MB. Free memory was 250.6 MB in the beginning and 235.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1454.70 ms. Allocated memory was 305.7 MB in the beginning and 466.6 MB in the end (delta: 161.0 MB). Free memory was 233.7 MB in the beginning and 333.2 MB in the end (delta: -99.5 MB). Peak memory consumption was 61.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - 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: 1072]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1450] CALL entry_point() [L1445] CALL h5() [L1434] CALL ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] - StatisticsResult: Ultimate Automizer benchmark data for error location: ldv_mallocErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 11 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 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 7 procedures, 37 locations, 7 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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: [L1450] CALL entry_point() [L1445] CALL, EXPR h5() [L1434] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1434] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}] [L1434] int *p = (int *)ldv_malloc(sizeof(int)); [L1435] RET return p; VAL [\result={0:0}, p={0:0}] [L1445] EXPR h5() VAL [h5()={0:0}] [L1445] int *p = h5(); [L1446] CALL g5(p) VAL [p={0:0}] [L1439] COND FALSE !(\read(*p)) VAL [p={0:0}, p={0:0}] [L1446] FCALL g5(p) - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 26 NumberOfCodeBlocks, 26 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: 1449]: 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 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1403 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: 1433]: 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: h5Err0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 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: 1444]: 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: entry_pointErr0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 21 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1113 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: 1438]: 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: g5Err0EnsuresViolation CFG has 7 procedures, 37 locations, 7 error locations. SAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 54 SDtfs, 12 SDslu, 146 SDs, 0 SdLazy, 62 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 2703 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_10-42-01-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_10-42-01-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_10-42-01-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_10-42-01-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_10-42-01-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-21_10-42-01-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-21_10-42-01-757.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-6-2018-01-21_10-42-01-757.csv Received shutdown request...