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_test1_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 20:44:24,652 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 20:44:24,653 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 20:44:24,665 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 20:44:24,665 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 20:44:24,666 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 20:44:24,666 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 20:44:24,668 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 20:44:24,669 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 20:44:24,670 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 20:44:24,671 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 20:44:24,671 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 20:44:24,672 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 20:44:24,673 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 20:44:24,673 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 20:44:24,675 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 20:44:24,677 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 20:44:24,678 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 20:44:24,679 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 20:44:24,680 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 20:44:24,682 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 20:44:24,685 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 20:44:24,686 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 20:44:24,686 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 20:44:24,695 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 20:44:24,695 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 20:44:24,696 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 20:44:24,696 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 20:44:24,696 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 20:44:24,696 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 20:44:24,696 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 20:44:24,696 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 20:44:24,696 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 20:44:24,696 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 20:44:24,696 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 20:44:24,696 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 20:44:24,697 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 20:44:24,697 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 20:44:24,697 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 20:44:24,697 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 20:44:24,697 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 20:44:24,697 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 20:44:24,697 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 20:44:24,697 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 20:44:24,697 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 20:44:24,697 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 20:44:24,698 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 20:44:24,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:44:24,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 20:44:24,730 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 20:44:24,733 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 20:44:24,734 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 20:44:24,734 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 20:44:24,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test1_false-valid-free.i [2018-02-04 20:44:24,873 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 20:44:24,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 20:44:24,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 20:44:24,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 20:44:24,878 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 20:44:24,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:44:24" (1/1) ... [2018-02-04 20:44:24,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b089594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:24, skipping insertion in model container [2018-02-04 20:44:24,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:44:24" (1/1) ... [2018-02-04 20:44:24,890 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:44:24,924 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:44:25,009 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:44:25,020 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:44:25,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25 WrapperNode [2018-02-04 20:44:25,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 20:44:25,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 20:44:25,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 20:44:25,026 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 20:44:25,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (1/1) ... [2018-02-04 20:44:25,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (1/1) ... [2018-02-04 20:44:25,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (1/1) ... [2018-02-04 20:44:25,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (1/1) ... [2018-02-04 20:44:25,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (1/1) ... [2018-02-04 20:44:25,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (1/1) ... [2018-02-04 20:44:25,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (1/1) ... [2018-02-04 20:44:25,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 20:44:25,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 20:44:25,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 20:44:25,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 20:44:25,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (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 20:44:25,086 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 20:44:25,086 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 20:44:25,086 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 20:44:25,086 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 20:44:25,086 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 20:44:25,086 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 20:44:25,086 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 20:44:25,087 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 20:44:25,180 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 20:44:25,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:44:25 BoogieIcfgContainer [2018-02-04 20:44:25,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 20:44:25,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 20:44:25,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 20:44:25,183 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 20:44:25,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 08:44:24" (1/3) ... [2018-02-04 20:44:25,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21845961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:44:25, skipping insertion in model container [2018-02-04 20:44:25,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:44:25" (2/3) ... [2018-02-04 20:44:25,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21845961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:44:25, skipping insertion in model container [2018-02-04 20:44:25,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:44:25" (3/3) ... [2018-02-04 20:44:25,185 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test1_false-valid-free.i [2018-02-04 20:44:25,190 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 20:44:25,194 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-02-04 20:44:25,215 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 20:44:25,215 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 20:44:25,215 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 20:44:25,215 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 20:44:25,215 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 20:44:25,215 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 20:44:25,215 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 20:44:25,215 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 20:44:25,216 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 20:44:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-02-04 20:44:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:44:25,228 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:44:25,229 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:44:25,229 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 20:44:25,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1168738877, 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 20:44:25,239 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:44:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,341 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 20:44:25,362 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:44:25,362 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 20:44:25,363 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:44:25,364 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 20:44:25,364 INFO L182 omatonBuilderFactory]: Interpolants [39#(= 0 |entry_point_#t~ret2.offset|), 40#(= 0 entry_point_~p~0.offset), 41#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 42#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 43#(= 0 |ldv_malloc_#res.offset|), 30#true, 31#false] [2018-02-04 20:44:25,364 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 20:44:25,365 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 20:44:25,384 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 20:44:25,385 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 20:44:25,387 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2018-02-04 20:44:25,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:44:25,544 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-02-04 20:44:25,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 20:44:25,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-02-04 20:44:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:44:25,551 INFO L225 Difference]: With dead ends: 31 [2018-02-04 20:44:25,551 INFO L226 Difference]: Without dead ends: 28 [2018-02-04 20:44:25,553 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 20:44:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-02-04 20:44:25,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2018-02-04 20:44:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 20:44:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-04 20:44:25,575 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 13 [2018-02-04 20:44:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:44:25,576 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-04 20:44:25,576 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 20:44:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-04 20:44:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:44:25,576 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:44:25,577 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:44:25,577 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 20:44:25,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1168738878, 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 20:44:25,581 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:44:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:44:25,668 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:44:25,668 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 20:44:25,669 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:44:25,669 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 20:44:25,669 INFO L182 omatonBuilderFactory]: Interpolants [112#false, 120#(= 0 |entry_point_#t~ret2.base|), 121#(= 0 entry_point_~p~0.base), 122#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 123#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 124#(= 0 |ldv_malloc_#res.base|), 111#true] [2018-02-04 20:44:25,669 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 20:44:25,671 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 20:44:25,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 20:44:25,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 20:44:25,672 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-02-04 20:44:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:44:25,788 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2018-02-04 20:44:25,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 20:44:25,788 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-02-04 20:44:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:44:25,789 INFO L225 Difference]: With dead ends: 31 [2018-02-04 20:44:25,789 INFO L226 Difference]: Without dead ends: 23 [2018-02-04 20:44:25,789 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 20:44:25,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-02-04 20:44:25,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-02-04 20:44:25,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-02-04 20:44:25,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2018-02-04 20:44:25,791 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 13 [2018-02-04 20:44:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:44:25,792 INFO L432 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2018-02-04 20:44:25,792 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 20:44:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2018-02-04 20:44:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 20:44:25,792 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:44:25,792 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:44:25,792 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 20:44:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash -602021893, 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 20:44:25,803 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:44:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,849 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 20:44:25,865 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:44:25,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 20:44:25,866 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:44:25,866 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 20:44:25,866 INFO L182 omatonBuilderFactory]: Interpolants [199#(= 0 |entry_point_#t~ret2.offset|), 200#(= 0 entry_point_~p~0.offset), 201#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 202#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 203#(= 0 |ldv_malloc_#t~malloc1.offset|), 188#true, 204#(= 0 |ldv_malloc_#res.offset|), 189#false] [2018-02-04 20:44:25,866 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 20:44:25,866 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 20:44:25,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 20:44:25,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 20:44:25,867 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 8 states. [2018-02-04 20:44:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:44:25,940 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2018-02-04 20:44:25,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 20:44:25,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-02-04 20:44:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:44:25,941 INFO L225 Difference]: With dead ends: 22 [2018-02-04 20:44:25,941 INFO L226 Difference]: Without dead ends: 22 [2018-02-04 20:44:25,942 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-04 20:44:25,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-02-04 20:44:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-02-04 20:44:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-02-04 20:44:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2018-02-04 20:44:25,944 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 15 [2018-02-04 20:44:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:44:25,945 INFO L432 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2018-02-04 20:44:25,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 20:44:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2018-02-04 20:44:25,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-04 20:44:25,946 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:44:25,946 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:44:25,946 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 20:44:25,946 INFO L82 PathProgramCache]: Analyzing trace with hash -602021892, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:44:25,949 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:44:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,962 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:44:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:44:25,999 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:44:26,001 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:44:26,001 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:44:26,080 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-04 20:44:26,082 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 20:44:26,083 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 20:44:26,083 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 20:44:26,094 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 20:44:26,110 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:44:26,110 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 20:44:26,110 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:44:26,110 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 20:44:26,110 INFO L182 omatonBuilderFactory]: Interpolants [265#(= 1 (select |#valid| |entry_point_#t~ret2.base|)), 266#(= 1 (select |#valid| entry_point_~p~0.base)), 267#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 268#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 269#(= 1 (select |#valid| |ldv_malloc_#t~malloc1.base|)), 254#true, 270#(= 1 (select |#valid| |ldv_malloc_#res.base|)), 255#false] [2018-02-04 20:44:26,110 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 20:44:26,111 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 20:44:26,111 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 20:44:26,111 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 20:44:26,111 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 8 states. [2018-02-04 20:44:26,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:44:26,180 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2018-02-04 20:44:26,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 20:44:26,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-02-04 20:44:26,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:44:26,181 INFO L225 Difference]: With dead ends: 21 [2018-02-04 20:44:26,181 INFO L226 Difference]: Without dead ends: 21 [2018-02-04 20:44:26,181 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-04 20:44:26,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-02-04 20:44:26,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-02-04 20:44:26,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-02-04 20:44:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2018-02-04 20:44:26,183 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 15 [2018-02-04 20:44:26,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:44:26,184 INFO L432 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2018-02-04 20:44:26,184 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 20:44:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2018-02-04 20:44:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-04 20:44:26,184 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:44:26,185 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:44:26,185 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 20:44:26,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1482809507, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:44:26,189 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:44:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 20:44:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 20:44:26,243 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 20:44:26,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 08:44:26 BoogieIcfgContainer [2018-02-04 20:44:26,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 20:44:26,256 INFO L168 Benchmark]: Toolchain (without parser) took 1382.79 ms. Allocated memory was 400.6 MB in the beginning and 610.8 MB in the end (delta: 210.2 MB). Free memory was 357.4 MB in the beginning and 565.7 MB in the end (delta: -208.3 MB). Peak memory consumption was 1.9 MB. Max. memory is 5.3 GB. [2018-02-04 20:44:26,257 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 400.6 MB. Free memory is still 364.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:44:26,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 151.30 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 345.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. [2018-02-04 20:44:26,257 INFO L168 Benchmark]: Boogie Preprocessor took 23.47 ms. Allocated memory is still 400.6 MB. Free memory was 345.5 MB in the beginning and 342.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 20:44:26,257 INFO L168 Benchmark]: RCFGBuilder took 131.47 ms. Allocated memory is still 400.6 MB. Free memory was 342.9 MB in the beginning and 330.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 5.3 GB. [2018-02-04 20:44:26,258 INFO L168 Benchmark]: TraceAbstraction took 1074.05 ms. Allocated memory was 400.6 MB in the beginning and 610.8 MB in the end (delta: 210.2 MB). Free memory was 328.9 MB in the beginning and 565.7 MB in the end (delta: -236.9 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:44:26,259 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 400.6 MB. Free memory is still 364.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 151.30 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 345.5 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.47 ms. Allocated memory is still 400.6 MB. Free memory was 345.5 MB in the beginning and 342.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 131.47 ms. Allocated memory is still 400.6 MB. Free memory was 342.9 MB in the beginning and 330.2 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1074.05 ms. Allocated memory was 400.6 MB in the beginning and 610.8 MB in the end (delta: 210.2 MB). Free memory was 328.9 MB in the beginning and 565.7 MB in the end (delta: -236.9 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L1441] CALL entry_point() [L1435] 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] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={7:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] FCALL free(p) VAL [p={7:0}] [L1437] FCALL free(p) VAL [p={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 5 error locations. UNSAFE Result, 1.0s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 42 SDslu, 177 SDs, 0 SdLazy, 261 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_20-44-26-267.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test1_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_20-44-26-267.csv Received shutdown request...