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/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test5_2_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:48:03,699 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:48:03,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:48:03,713 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:48:03,713 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:48:03,713 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:48:03,714 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:48:03,716 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:48:03,718 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:48:03,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:48:03,719 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:48:03,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:48:03,720 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:48:03,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:48:03,722 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:48:03,724 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:48:03,725 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:48:03,727 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:48:03,728 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:48:03,729 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:48:03,730 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:48:03,735 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:48:03,735 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:48:03,735 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-02-04 04:48:03,744 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:48:03,744 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:48:03,745 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:48:03,745 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:48:03,745 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:48:03,745 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:48:03,745 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:48:03,745 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:48:03,746 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:48:03,746 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:48:03,746 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:48:03,746 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:48:03,746 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:48:03,746 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:48:03,746 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:48:03,746 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:48:03,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:48:03,747 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:48:03,747 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:48:03,747 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:48:03,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:48:03,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:48:03,747 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:48:03,747 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:48:03,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:48:03,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:48:03,786 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:48:03,789 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:48:03,790 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:48:03,790 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:48:03,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test5_2_false-valid-memtrack_true-termination.i [2018-02-04 04:48:03,920 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:48:03,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:48:03,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:48:03,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:48:03,926 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:48:03,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:48:03" (1/1) ... [2018-02-04 04:48:03,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228d72e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:03, skipping insertion in model container [2018-02-04 04:48:03,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:48:03" (1/1) ... [2018-02-04 04:48:03,940 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:48:03,974 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:48:04,059 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:48:04,070 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:48:04,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04 WrapperNode [2018-02-04 04:48:04,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:48:04,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:48:04,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:48:04,077 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:48:04,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (1/1) ... [2018-02-04 04:48:04,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (1/1) ... [2018-02-04 04:48:04,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (1/1) ... [2018-02-04 04:48:04,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (1/1) ... [2018-02-04 04:48:04,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (1/1) ... [2018-02-04 04:48:04,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (1/1) ... [2018-02-04 04:48:04,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (1/1) ... [2018-02-04 04:48:04,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:48:04,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:48:04,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:48:04,103 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:48:04,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-04 04:48:04,139 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:48:04,139 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:48:04,139 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:48:04,139 INFO L136 BoogieDeclarations]: Found implementation of procedure f5 [2018-02-04 04:48:04,139 INFO L136 BoogieDeclarations]: Found implementation of procedure g5 [2018-02-04 04:48:04,139 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:48:04,139 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:48:04,139 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:48:04,139 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:48:04,139 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure f5 [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure g5 [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:48:04,140 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:48:04,236 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:48:04,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:48:04 BoogieIcfgContainer [2018-02-04 04:48:04,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:48:04,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:48:04,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:48:04,239 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:48:04,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:48:03" (1/3) ... [2018-02-04 04:48:04,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3663dd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:48:04, skipping insertion in model container [2018-02-04 04:48:04,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:48:04" (2/3) ... [2018-02-04 04:48:04,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3663dd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:48:04, skipping insertion in model container [2018-02-04 04:48:04,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:48:04" (3/3) ... [2018-02-04 04:48:04,241 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test5_2_false-valid-memtrack_true-termination.i [2018-02-04 04:48:04,246 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:48:04,251 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 04:48:04,282 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:48:04,282 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:48:04,283 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:48:04,283 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:48:04,283 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:48:04,283 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:48:04,283 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:48:04,283 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:48:04,284 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:48:04,295 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-02-04 04:48:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:48:04,304 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:48:04,305 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:48:04,305 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, g5Err1RequiresViolation, g5Err0RequiresViolation]=== [2018-02-04 04:48:04,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1938829302, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:48:04,323 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:48:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:48:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:48:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:48:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:48:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:48:04,501 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:48:04,502 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:48:04,503 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:48:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:48:04,504 INFO L182 omatonBuilderFactory]: Interpolants [49#(= 0 |entry_point_#t~ret3.offset|), 50#(= 0 entry_point_~p~1.offset), 51#(= 0 |g5_#in~p.offset|), 36#true, 52#(= 0 g5_~p.offset), 37#false, 53#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 54#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 59#(= 0 |f5_#res.offset|)] [2018-02-04 04:48:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:48:04,505 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:48:04,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:48:04,516 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:48:04,518 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 9 states. [2018-02-04 04:48:04,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:48:04,792 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-02-04 04:48:04,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-04 04:48:04,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-04 04:48:04,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:48:04,804 INFO L225 Difference]: With dead ends: 45 [2018-02-04 04:48:04,804 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 04:48:04,806 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-02-04 04:48:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 04:48:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-02-04 04:48:04,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-04 04:48:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-02-04 04:48:04,839 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 20 [2018-02-04 04:48:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:48:04,839 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-02-04 04:48:04,840 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:48:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-02-04 04:48:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:48:04,840 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:48:04,840 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:48:04,841 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, g5Err1RequiresViolation, g5Err0RequiresViolation]=== [2018-02-04 04:48:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1938829303, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:48:04,845 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:48:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:48:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:48:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:48:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:48:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:48:04,947 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:48:04,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:48:04,947 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:48:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:48:04,948 INFO L182 omatonBuilderFactory]: Interpolants [176#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 181#(= 0 |f5_#res.base|), 171#(= 0 |entry_point_#t~ret3.base|), 172#(= 0 entry_point_~p~1.base), 173#(= 0 |g5_#in~p.base|), 158#true, 174#(= 0 g5_~p.base), 159#false, 175#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:48:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:48:04,949 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:48:04,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:48:04,950 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:48:04,950 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 9 states. [2018-02-04 04:48:05,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:48:05,106 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2018-02-04 04:48:05,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-04 04:48:05,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-04 04:48:05,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:48:05,107 INFO L225 Difference]: With dead ends: 40 [2018-02-04 04:48:05,107 INFO L226 Difference]: Without dead ends: 30 [2018-02-04 04:48:05,108 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-02-04 04:48:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-04 04:48:05,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-02-04 04:48:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 04:48:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-02-04 04:48:05,111 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 20 [2018-02-04 04:48:05,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:48:05,111 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-02-04 04:48:05,111 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:48:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-02-04 04:48:05,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-04 04:48:05,111 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:48:05,112 INFO L351 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] [2018-02-04 04:48:05,112 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, g5Err1RequiresViolation, g5Err0RequiresViolation]=== [2018-02-04 04:48:05,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1904749191, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:48:05,116 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:48:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:48:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:48:05,205 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 04:48:05,212 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-04 04:48:05,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 04:48:05 BoogieIcfgContainer [2018-02-04 04:48:05,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 04:48:05,225 INFO L168 Benchmark]: Toolchain (without parser) took 1304.11 ms. Allocated memory was 396.4 MB in the beginning and 608.2 MB in the end (delta: 211.8 MB). Free memory was 352.8 MB in the beginning and 588.5 MB in the end (delta: -235.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 5.3 GB. [2018-02-04 04:48:05,226 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 396.4 MB. Free memory is still 359.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:48:05,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.97 ms. Allocated memory is still 396.4 MB. Free memory was 352.8 MB in the beginning and 339.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:48:05,227 INFO L168 Benchmark]: Boogie Preprocessor took 25.59 ms. Allocated memory is still 396.4 MB. Free memory was 339.6 MB in the beginning and 338.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:48:05,228 INFO L168 Benchmark]: RCFGBuilder took 133.42 ms. Allocated memory is still 396.4 MB. Free memory was 338.3 MB in the beginning and 323.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:48:05,228 INFO L168 Benchmark]: TraceAbstraction took 987.41 ms. Allocated memory was 396.4 MB in the beginning and 608.2 MB in the end (delta: 211.8 MB). Free memory was 322.4 MB in the beginning and 588.5 MB in the end (delta: -266.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:48:05,231 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 396.4 MB. Free memory is still 359.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 154.97 ms. Allocated memory is still 396.4 MB. Free memory was 352.8 MB in the beginning and 339.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 25.59 ms. Allocated memory is still 396.4 MB. Free memory was 339.6 MB in the beginning and 338.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 133.42 ms. Allocated memory is still 396.4 MB. Free memory was 338.3 MB in the beginning and 323.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 987.41 ms. Allocated memory was 396.4 MB in the beginning and 608.2 MB in the end (delta: 211.8 MB). Free memory was 322.4 MB in the beginning and 588.5 MB in the end (delta: -266.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1449]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1449. Possible FailurePath: [L1450] CALL entry_point() [L1445] CALL, EXPR f5() [L1434] CALL, EXPR 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)={7:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={7:0}, malloc(size)={7:0}, size=4] [L1434] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={7:0}] [L1434] int *p = (int *)ldv_malloc(sizeof(int)); [L1435] RET return 0; VAL [\result={0:0}, p={7:0}] [L1445] EXPR f5() VAL [f5()={0:0}] [L1445] int *p = f5(); [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 CFG has 7 procedures, 33 locations, 3 error locations. UNSAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 68 SDslu, 126 SDs, 0 SdLazy, 253 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=1, 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 2052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-48-05-239.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test5_2_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_04-48-05-239.csv Received shutdown request...