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.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test9_2_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:58:48,034 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:58:48,035 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:58:48,051 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:58:48,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:58:48,052 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:58:48,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:58:48,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:58:48,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:58:48,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:58:48,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:58:48,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:58:48,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:58:48,061 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:58:48,062 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:58:48,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:58:48,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:58:48,069 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:58:48,071 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:58:48,072 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:58:48,074 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 23:58:48,075 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 23:58:48,075 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 23:58:48,076 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 23:58:48,077 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 23:58:48,078 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 23:58:48,078 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 23:58:48,079 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 23:58:48,079 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 23:58:48,080 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 23:58:48,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 23:58:48,081 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.epf [2018-01-20 23:58:48,089 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:58:48,089 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:58:48,090 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:58:48,090 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:58:48,090 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:58:48,090 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:58:48,090 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:58:48,091 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:58:48,091 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:58:48,091 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:58:48,091 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:58:48,091 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:58:48,091 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:58:48,092 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:58:48,092 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:58:48,092 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:58:48,092 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:58:48,092 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:58:48,092 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:58:48,092 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:58:48,092 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:58:48,093 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:58:48,093 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:58:48,093 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:58:48,093 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:58:48,093 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:58:48,094 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:58:48,094 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:58:48,094 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:58:48,094 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:58:48,094 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:58:48,094 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:58:48,094 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:58:48,094 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:58:48,095 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:58:48,095 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:58:48,095 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:58:48,095 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:58:48,128 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:58:48,138 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:58:48,141 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:58:48,142 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:58:48,142 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:58:48,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test9_2_false-valid-memtrack_true-termination.i [2018-01-20 23:58:48,322 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:58:48,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:58:48,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:58:48,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:58:48,336 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:58:48,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,341 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 20.01 11:58:48, skipping insertion in model container [2018-01-20 23:58:48,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,359 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:58:48,411 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:58:48,524 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:58:48,537 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:58:48,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48 WrapperNode [2018-01-20 23:58:48,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:58:48,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:58:48,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:58:48,543 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:58:48,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (1/1) ... [2018-01-20 23:58:48,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:58:48,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:58:48,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:58:48,576 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:58:48,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (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 23:58:48,623 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:58:48,623 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:58:48,623 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-20 23:58:48,623 INFO L136 BoogieDeclarations]: Found implementation of procedure probe_9 [2018-01-20 23:58:48,623 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-20 23:58:48,623 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure probe_9 [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:58:48,624 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:58:48,625 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:58:48,755 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:58:48,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:58:48 BoogieIcfgContainer [2018-01-20 23:58:48,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:58:48,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:58:48,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:58:48,758 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:58:48,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:58:48" (1/3) ... [2018-01-20 23:58:48,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d615bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:58:48, skipping insertion in model container [2018-01-20 23:58:48,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:58:48" (2/3) ... [2018-01-20 23:58:48,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d615bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:58:48, skipping insertion in model container [2018-01-20 23:58:48,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:58:48" (3/3) ... [2018-01-20 23:58:48,761 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test9_2_false-valid-memtrack_true-termination.i [2018-01-20 23:58:48,768 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:58:48,774 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-20 23:58:48,823 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:58:48,824 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:58:48,824 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:58:48,824 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:58:48,824 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:58:48,824 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:58:48,824 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:58:48,824 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ldv_mallocErr0EnsuresViolation======== [2018-01-20 23:58:48,825 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:58:48,840 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-20 23:58:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-20 23:58:48,845 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:58:48,846 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:58:48,847 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-20 23:58:48,852 INFO L82 PathProgramCache]: Analyzing trace with hash -483980345, now seen corresponding path program 1 times [2018-01-20 23:58:48,855 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:58:48,906 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:48,907 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:58:48,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:48,907 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:58:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:58:48,962 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:58:49,020 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 23:58:49,023 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:58:49,023 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:58:49,023 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:58:49,026 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:58:49,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:58:49,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:58:49,039 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-01-20 23:58:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:58:49,232 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-01-20 23:58:49,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:58:49,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-01-20 23:58:49,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:58:49,244 INFO L225 Difference]: With dead ends: 33 [2018-01-20 23:58:49,245 INFO L226 Difference]: Without dead ends: 14 [2018-01-20 23:58:49,248 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:58:49,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-01-20 23:58:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-01-20 23:58:49,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-01-20 23:58:49,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2018-01-20 23:58:49,283 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 11 [2018-01-20 23:58:49,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:58:49,283 INFO L432 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2018-01-20 23:58:49,284 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:58:49,284 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2018-01-20 23:58:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-20 23:58:49,284 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:58:49,284 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:58:49,284 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_mallocErr0EnsuresViolation]=== [2018-01-20 23:58:49,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1248736631, now seen corresponding path program 1 times [2018-01-20 23:58:49,285 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:58:49,287 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,287 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:58:49,287 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,288 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:58:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:58:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:58:49,359 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:58:49,367 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,370 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,381 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:58:49,381 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:58:49,382 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:58:49,382 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:58:49,382 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:58:49,382 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:58:49,382 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:58:49,382 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:58:49,382 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:58:49,383 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-20 23:58:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:58:49,383 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:58:49,383 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:58:49,384 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:58:49,384 INFO L82 PathProgramCache]: Analyzing trace with hash 61794, now seen corresponding path program 1 times [2018-01-20 23:58:49,384 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:58:49,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,385 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:58:49,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,385 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:58:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:58:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:58:49,397 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:58:49,399 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,401 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:58:49,401 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:58:49,401 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:58:49,401 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:58:49,402 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:58:49,402 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:58:49,402 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:58:49,402 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == probe_9Err0EnsuresViolation======== [2018-01-20 23:58:49,402 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:58:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-20 23:58:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-20 23:58:49,404 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:58:49,405 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:58:49,405 INFO L371 AbstractCegarLoop]: === Iteration 1 === [probe_9Err0EnsuresViolation]=== [2018-01-20 23:58:49,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1650559114, now seen corresponding path program 1 times [2018-01-20 23:58:49,405 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:58:49,407 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,407 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:58:49,407 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,407 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:58:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:58:49,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:58:49,464 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 23:58:49,465 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:58:49,465 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:58:49,465 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:58:49,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:58:49,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:58:49,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:58:49,466 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-01-20 23:58:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:58:49,537 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-01-20 23:58:49,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:58:49,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-01-20 23:58:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:58:49,541 INFO L225 Difference]: With dead ends: 33 [2018-01-20 23:58:49,541 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:58:49,542 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 23:58:49,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:58:49,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:58:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:58:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:58:49,543 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-01-20 23:58:49,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:58:49,545 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:58:49,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:58:49,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:58:49,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:58:49,551 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:58:49,551 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:58:49,551 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:58:49,551 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:58:49,551 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:58:49,551 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:58:49,551 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:58:49,552 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:58:49,552 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:58:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-20 23:58:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-20 23:58:49,554 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:58:49,555 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] [2018-01-20 23:58:49,555 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:58:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash 265449594, now seen corresponding path program 1 times [2018-01-20 23:58:49,555 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:58:49,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,558 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:58:49,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,558 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:58:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:58:49,574 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:58:49,639 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 23:58:49,639 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:58:49,639 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 23:58:49,639 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:58:49,640 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 23:58:49,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 23:58:49,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-20 23:58:49,641 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2018-01-20 23:58:49,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:58:49,685 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2018-01-20 23:58:49,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 23:58:49,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-01-20 23:58:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:58:49,687 INFO L225 Difference]: With dead ends: 53 [2018-01-20 23:58:49,687 INFO L226 Difference]: Without dead ends: 32 [2018-01-20 23:58:49,688 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-20 23:58:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-01-20 23:58:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2018-01-20 23:58:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-20 23:58:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-01-20 23:58:49,694 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2018-01-20 23:58:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:58:49,694 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-01-20 23:58:49,694 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 23:58:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-01-20 23:58:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-20 23:58:49,695 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:58:49,695 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] [2018-01-20 23:58:49,695 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:58:49,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1542004869, now seen corresponding path program 1 times [2018-01-20 23:58:49,696 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:58:49,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,697 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:58:49,697 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,698 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:58:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:58:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:58:49,729 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:58:49,732 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,734 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,735 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,735 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,736 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,736 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:58:49,741 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:58:49,742 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:58:49,742 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:58:49,742 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:58:49,742 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:58:49,742 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:58:49,742 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:58:49,742 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:58:49,743 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:58:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-20 23:58:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-20 23:58:49,745 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:58:49,745 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:58:49,745 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 23:58:49,746 INFO L82 PathProgramCache]: Analyzing trace with hash 263963080, now seen corresponding path program 1 times [2018-01-20 23:58:49,746 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:58:49,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,747 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:58:49,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,748 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:58:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:58:49,759 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:58:49,800 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 23:58:49,801 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:58:49,801 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:58:49,801 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:58:49,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:58:49,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:58:49,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:58:49,802 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-01-20 23:58:49,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:58:49,851 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-01-20 23:58:49,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:58:49,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-01-20 23:58:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:58:49,852 INFO L225 Difference]: With dead ends: 33 [2018-01-20 23:58:49,852 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:58:49,852 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 [2018-01-20 23:58:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:58:49,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:58:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:58:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:58:49,853 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-20 23:58:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:58:49,853 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:58:49,853 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:58:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:58:49,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:58:49,855 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:58:49,855 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:58:49,855 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:58:49,856 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:58:49,856 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:58:49,856 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:58:49,856 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:58:49,856 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == entry_pointErr0EnsuresViolation======== [2018-01-20 23:58:49,856 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:58:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-01-20 23:58:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-20 23:58:49,858 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:58:49,858 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 23:58:49,859 INFO L371 AbstractCegarLoop]: === Iteration 1 === [entry_pointErr0EnsuresViolation]=== [2018-01-20 23:58:49,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1274016277, now seen corresponding path program 1 times [2018-01-20 23:58:49,859 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:58:49,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,861 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:58:49,861 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:58:49,861 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:58:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:58:49,871 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 23:58:49,899 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 23:58:49,900 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:58:49,900 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 23:58:49,900 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:58:49,900 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 23:58:49,901 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 23:58:49,901 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 23:58:49,901 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-01-20 23:58:49,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:58:49,984 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-01-20 23:58:49,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 23:58:49,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-01-20 23:58:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:58:49,985 INFO L225 Difference]: With dead ends: 33 [2018-01-20 23:58:49,986 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 23:58:49,986 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 23:58:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 23:58:49,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 23:58:49,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 23:58:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 23:58:49,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-01-20 23:58:49,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:58:49,987 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 23:58:49,988 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 23:58:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 23:58:49,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 23:58:49,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:58:49 BoogieIcfgContainer [2018-01-20 23:58:49,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:58:49,992 INFO L168 Benchmark]: Toolchain (without parser) took 1668.95 ms. Allocated memory was 302.0 MB in the beginning and 463.5 MB in the end (delta: 161.5 MB). Free memory was 259.3 MB in the beginning and 364.9 MB in the end (delta: -105.6 MB). Peak memory consumption was 55.9 MB. Max. memory is 5.3 GB. [2018-01-20 23:58:49,993 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 265.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:58:49,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.26 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 247.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. [2018-01-20 23:58:49,993 INFO L168 Benchmark]: Boogie Preprocessor took 31.91 ms. Allocated memory is still 302.0 MB. Free memory was 247.2 MB in the beginning and 245.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:58:49,994 INFO L168 Benchmark]: RCFGBuilder took 180.01 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 230.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-20 23:58:49,994 INFO L168 Benchmark]: TraceAbstraction took 1235.06 ms. Allocated memory was 302.0 MB in the beginning and 463.5 MB in the end (delta: 161.5 MB). Free memory was 230.7 MB in the beginning and 364.9 MB in the end (delta: -134.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 5.3 GB. [2018-01-20 23:58:49,995 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 265.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 214.26 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 247.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.91 ms. Allocated memory is still 302.0 MB. Free memory was 247.2 MB in the beginning and 245.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 180.01 ms. Allocated memory is still 302.0 MB. Free memory was 245.2 MB in the beginning and 230.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1235.06 ms. Allocated memory was 302.0 MB in the beginning and 463.5 MB in the end (delta: 161.5 MB). Free memory was 230.7 MB in the beginning and 364.9 MB in the end (delta: -134.2 MB). Peak memory consumption was 27.3 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) * 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: [L1434] int *a9; VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1451] CALL entry_point() VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1445] CALL probe_9() VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1437] CALL ldv_malloc(sizeof(int)) VAL [\old(a9)=0, \old(a9)=0, \old(size)=4, a9={0:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(a9)=0, \old(a9)=0, \old(size)=4, a9={0:0}, malloc(size)={7:0}, size=4] [L1074] return malloc(size); VAL [\old(a9)=0, \old(a9)=0, \old(size)=4, \result={7:0}, a9={0:0}, malloc(size)={7:0}, size=4] - StatisticsResult: Ultimate Automizer benchmark data for error location: ldv_mallocErr0EnsuresViolation CFG has 6 procedures, 31 locations, 6 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 16 SolverSat, 13 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=31occurred 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: [L1434] int *a9; VAL [\old(a9)=2, \old(a9)=3, a9={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 6 procedures, 31 locations, 6 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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: 1436]: 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: probe_9Err0EnsuresViolation CFG has 6 procedures, 31 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 6 SDslu, 1 SDs, 0 SdLazy, 16 SolverSat, 11 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=31occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 420 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: [L1434] int *a9; VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1451] CALL entry_point() VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1445] CALL probe_9() VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(a9)=0, \old(a9)=0, \old(size)=4, a9={0:0}] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(a9)=0, \old(a9)=0, \old(size)=4, \result={0:0}, a9={0:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [\old(a9)=0, \old(a9)=0, a9={0:0}, ldv_malloc(sizeof(int))={0:0}] [L1437] a9 = (int *)ldv_malloc(sizeof(int)) [L1438] COND FALSE !(\read(*a9)) [L1441] RET return - -3; VAL [\old(a9)=0, \old(a9)=0, \result=3, a9={0:0}] [L1445] probe_9() VAL [\old(a9)=0, \old(a9)=0, a9={0:0}, probe_9()=3] [L1447] RET a9 = 0 VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1451] entry_point() VAL [a9={0:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 6 procedures, 31 locations, 6 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 30 SDslu, 62 SDs, 0 SdLazy, 9 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 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: 1450]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 6 procedures, 31 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 16 SolverSat, 7 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=31occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 931 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 6 procedures, 31 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 16 SolverSat, 9 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=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_23-58-50-007.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_23-58-50-007.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_23-58-50-007.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_23-58-50-007.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_23-58-50-007.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-20_23-58-50-007.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_2_false-valid-memtrack_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-20_23-58-50-007.csv Received shutdown request...