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/memsafety/test-0158_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:31:19,159 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:31:19,160 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:31:19,170 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:31:19,171 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:31:19,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:31:19,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:31:19,174 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:31:19,176 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:31:19,176 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:31:19,177 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:31:19,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:31:19,179 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:31:19,180 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:31:19,180 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:31:19,182 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:31:19,184 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:31:19,185 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:31:19,186 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:31:19,187 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:31:19,189 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:31:19,194 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 04:31:19,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:31:19,204 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:31:19,205 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:31:19,205 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:31:19,205 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:31:19,205 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:31:19,206 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:31:19,206 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:31:19,206 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:31:19,206 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:31:19,206 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:31:19,206 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:31:19,206 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:31:19,207 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:31:19,207 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:31:19,207 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:31:19,207 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:31:19,207 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:31:19,207 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:31:19,208 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:31:19,208 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:31:19,208 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:31:19,208 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:31:19,208 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:31:19,208 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:31:19,238 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:31:19,246 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:31:19,248 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:31:19,249 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:31:19,249 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:31:19,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0158_false-valid-memtrack_true-termination.i [2018-02-04 04:31:19,354 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:31:19,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:31:19,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:31:19,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:31:19,361 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:31:19,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fcce9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19, skipping insertion in model container [2018-02-04 04:31:19,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,374 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:31:19,405 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:31:19,482 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:31:19,492 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:31:19,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19 WrapperNode [2018-02-04 04:31:19,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:31:19,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:31:19,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:31:19,500 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:31:19,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (1/1) ... [2018-02-04 04:31:19,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:31:19,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:31:19,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:31:19,522 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:31:19,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (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 04:31:19,564 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:31:19,564 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:31:19,564 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:31:19,564 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 04:31:19,564 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 04:31:19,564 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 04:31:19,565 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 04:31:19,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:31:19,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:31:19,565 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:31:19,565 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:31:19,565 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:31:19,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:31:19,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:31:19,684 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:31:19,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:31:19 BoogieIcfgContainer [2018-02-04 04:31:19,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:31:19,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:31:19,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:31:19,687 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:31:19,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:31:19" (1/3) ... [2018-02-04 04:31:19,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c86492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:31:19, skipping insertion in model container [2018-02-04 04:31:19,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:31:19" (2/3) ... [2018-02-04 04:31:19,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c86492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:31:19, skipping insertion in model container [2018-02-04 04:31:19,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:31:19" (3/3) ... [2018-02-04 04:31:19,691 INFO L107 eAbstractionObserver]: Analyzing ICFG test-0158_false-valid-memtrack_true-termination.i [2018-02-04 04:31:19,702 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:31:19,712 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-02-04 04:31:19,747 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:31:19,747 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:31:19,747 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:31:19,747 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:31:19,748 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:31:19,748 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:31:19,748 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:31:19,748 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:31:19,748 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:31:19,756 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-02-04 04:31:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-04 04:31:19,762 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:31:19,762 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:31:19,763 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 04:31:19,766 INFO L82 PathProgramCache]: Analyzing trace with hash 481461009, 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 04:31:19,779 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:31:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:31:19,808 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:31:19,816 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:19,816 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:19,817 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:19,817 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:19,843 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:31:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:31:19,889 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 04:31:19,907 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:31:19,907 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:31:19,908 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:31:19,908 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 04:31:19,909 INFO L182 omatonBuilderFactory]: Interpolants [32#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)), 33#(= 1 (select |#valid| |main_~#data~0.base|)), 34#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 27#true, 28#false] [2018-02-04 04:31:19,909 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 04:31:19,909 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:31:19,917 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:31:19,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2018-02-04 04:31:19,919 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2018-02-04 04:31:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:31:19,983 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2018-02-04 04:31:19,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 04:31:19,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-02-04 04:31:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:31:19,991 INFO L225 Difference]: With dead ends: 21 [2018-02-04 04:31:19,991 INFO L226 Difference]: Without dead ends: 18 [2018-02-04 04:31:19,992 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2018-02-04 04:31:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-02-04 04:31:20,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-02-04 04:31:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-02-04 04:31:20,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2018-02-04 04:31:20,013 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 8 [2018-02-04 04:31:20,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:31:20,013 INFO L432 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2018-02-04 04:31:20,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:31:20,013 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2018-02-04 04:31:20,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-04 04:31:20,013 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:31:20,013 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:31:20,014 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 04:31:20,014 INFO L82 PathProgramCache]: Analyzing trace with hash 481461010, 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 04:31:20,017 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:31:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:31:20,029 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:31:20,035 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:20,035 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:20,035 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:20,036 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:20,036 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:20,036 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:31:20,046 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 9 treesize of output 8 [2018-02-04 04:31:20,048 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:31:20,052 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:31:20,053 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:9 [2018-02-04 04:31:20,057 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (exists ((%2 (Array Int Int))) (! (and (= (store |c_#valid| %1 1) (store %0 %1 1)) (= (store |c_#length| %1 10) (store %2 %1 10))) :qid itp)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:31:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:31:20,100 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 04:31:20,117 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:31:20,117 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:31:20,117 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:31:20,117 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 04:31:20,118 INFO L182 omatonBuilderFactory]: Interpolants [81#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (exists ((%2 (Array Int Int))) (! (and (= (store |#valid| %1 1) (store %0 %1 1)) (= (store |#length| %1 10) (store %2 %1 10))) :qid itp)) :qid itp)) :qid itp)), 82#(and (= 1 (select |#valid| |main_~#data~0.base|)) (= 0 |main_~#data~0.offset|) (= 10 (select |#length| |main_~#data~0.base|))), 83#(and (<= 0 |main_~#data~0.offset|) (<= (+ |main_~#data~0.offset| 4) (select |#length| |main_~#data~0.base|)) (= 10 (select |#length| |main_~#data~0.base|))), 84#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 76#true, 77#false] [2018-02-04 04:31:20,118 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 04:31:20,119 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:31:20,119 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:31:20,119 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2018-02-04 04:31:20,119 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 6 states. [2018-02-04 04:31:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:31:20,189 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2018-02-04 04:31:20,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:31:20,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-02-04 04:31:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:31:20,190 INFO L225 Difference]: With dead ends: 15 [2018-02-04 04:31:20,190 INFO L226 Difference]: Without dead ends: 15 [2018-02-04 04:31:20,191 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=4, NotChecked=8, Total=42 [2018-02-04 04:31:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-02-04 04:31:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-02-04 04:31:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-02-04 04:31:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2018-02-04 04:31:20,193 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 8 [2018-02-04 04:31:20,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:31:20,194 INFO L432 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2018-02-04 04:31:20,194 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:31:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2018-02-04 04:31:20,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 04:31:20,194 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:31:20,195 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:31:20,195 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 04:31:20,195 INFO L82 PathProgramCache]: Analyzing trace with hash 2142709462, 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 04:31:20,199 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:31:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:31:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:31:20,323 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 04:31:20,329 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-04 04:31:20,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 04:31:20 BoogieIcfgContainer [2018-02-04 04:31:20,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 04:31:20,337 INFO L168 Benchmark]: Toolchain (without parser) took 982.67 ms. Allocated memory was 402.7 MB in the beginning and 611.8 MB in the end (delta: 209.2 MB). Free memory was 360.7 MB in the beginning and 580.9 MB in the end (delta: -220.3 MB). Peak memory consumption was 110.0 MB. Max. memory is 5.3 GB. [2018-02-04 04:31:20,338 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 402.7 MB. Free memory is still 365.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:31:20,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.38 ms. Allocated memory is still 402.7 MB. Free memory was 359.3 MB in the beginning and 350.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:31:20,338 INFO L168 Benchmark]: Boogie Preprocessor took 21.86 ms. Allocated memory is still 402.7 MB. Free memory was 350.0 MB in the beginning and 347.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:31:20,339 INFO L168 Benchmark]: RCFGBuilder took 163.18 ms. Allocated memory is still 402.7 MB. Free memory was 347.4 MB in the beginning and 332.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 5.3 GB. [2018-02-04 04:31:20,339 INFO L168 Benchmark]: TraceAbstraction took 651.11 ms. Allocated memory was 402.7 MB in the beginning and 611.8 MB in the end (delta: 209.2 MB). Free memory was 332.5 MB in the beginning and 580.9 MB in the end (delta: -248.4 MB). Peak memory consumption was 81.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:31:20,341 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 402.7 MB. Free memory is still 365.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 143.38 ms. Allocated memory is still 402.7 MB. Free memory was 359.3 MB in the beginning and 350.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 21.86 ms. Allocated memory is still 402.7 MB. Free memory was 350.0 MB in the beginning and 347.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 163.18 ms. Allocated memory is still 402.7 MB. Free memory was 347.4 MB in the beginning and 332.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 651.11 ms. Allocated memory was 402.7 MB in the beginning and 611.8 MB in the end (delta: 209.2 MB). Free memory was 332.5 MB in the beginning and 580.9 MB in the end (delta: -248.4 MB). Peak memory consumption was 81.9 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: 619]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 619. Possible FailurePath: [L621-L628] FCALL union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; VAL [data={13:0}] [L629] EXPR, FCALL malloc(37U) VAL [data={13:0}, malloc(37U)={14:0}] [L629] FCALL data.p0 = malloc(37U) VAL [data={13:0}, malloc(37U)={14:0}] [L630] FCALL data.str.p2 = &data VAL [data={13:0}, malloc(37U)={14:0}] [L631] FCALL data.str.c[1] = sizeof data.str.p1 VAL [data={13:0}, malloc(37U)={14:0}] [L632] return 0; VAL [\result=0, data={13:0}, malloc(37U)={14:0}] [L632] return 0; VAL [\result=0, malloc(37U)={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 7 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 11 SDslu, 19 SDs, 0 SdLazy, 49 SolverSat, 9 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 2 QuantifiedInterpolants, 728 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/test-0158_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-31-20-347.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0158_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_04-31-20-347.csv Received shutdown request...