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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 10:26:22,463 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 10:26:22,465 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 10:26:22,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 10:26:22,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 10:26:22,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 10:26:22,479 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 10:26:22,481 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 10:26:22,483 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 10:26:22,483 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 10:26:22,484 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 10:26:22,484 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 10:26:22,485 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 10:26:22,486 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 10:26:22,487 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 10:26:22,489 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 10:26:22,491 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 10:26:22,493 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 10:26:22,494 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 10:26:22,495 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 10:26:22,497 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 10:26:22,501 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-02-02 10:26:22,510 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 10:26:22,511 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 10:26:22,511 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 10:26:22,512 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 10:26:22,512 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 10:26:22,512 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 10:26:22,512 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 10:26:22,512 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 10:26:22,512 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 10:26:22,512 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 10:26:22,512 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 10:26:22,513 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 10:26:22,513 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 10:26:22,513 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 10:26:22,513 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 10:26:22,513 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 10:26:22,513 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 10:26:22,513 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 10:26:22,513 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 10:26:22,513 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 10:26:22,514 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 10:26:22,514 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 10:26:22,514 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-02 10:26:22,543 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 10:26:22,551 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 10:26:22,554 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 10:26:22,555 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 10:26:22,555 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 10:26:22,556 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-02-02 10:26:22,667 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 10:26:22,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 10:26:22,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 10:26:22,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 10:26:22,672 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 10:26:22,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421f655e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22, skipping insertion in model container [2018-02-02 10:26:22,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,686 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:26:22,713 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:26:22,803 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:26:22,816 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:26:22,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22 WrapperNode [2018-02-02 10:26:22,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 10:26:22,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 10:26:22,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 10:26:22,821 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 10:26:22,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (1/1) ... [2018-02-02 10:26:22,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 10:26:22,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 10:26:22,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 10:26:22,849 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 10:26:22,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (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 [2018-02-02 10:26:22,888 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 10:26:22,889 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 10:26:22,889 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-02-02 10:26:22,889 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 10:26:22,889 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 10:26:22,889 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 10:26:22,889 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 10:26:22,889 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 10:26:22,889 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 10:26:22,889 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 10:26:22,889 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 10:26:22,890 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-02 10:26:22,890 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 10:26:22,890 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 10:26:22,890 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-02-02 10:26:22,890 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 10:26:22,890 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 10:26:22,890 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 10:26:23,100 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 10:26:23,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:26:23 BoogieIcfgContainer [2018-02-02 10:26:23,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 10:26:23,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 10:26:23,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 10:26:23,104 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 10:26:23,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 10:26:22" (1/3) ... [2018-02-02 10:26:23,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb62f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:26:23, skipping insertion in model container [2018-02-02 10:26:23,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:22" (2/3) ... [2018-02-02 10:26:23,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb62f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:26:23, skipping insertion in model container [2018-02-02 10:26:23,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:26:23" (3/3) ... [2018-02-02 10:26:23,107 INFO L107 eAbstractionObserver]: Analyzing ICFG list_flag_true-unreach-call_false-valid-memtrack.i [2018-02-02 10:26:23,113 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 10:26:23,118 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-02-02 10:26:23,147 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 10:26:23,147 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 10:26:23,147 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-02 10:26:23,148 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 10:26:23,148 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 10:26:23,148 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 10:26:23,148 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 10:26:23,148 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 10:26:23,149 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 10:26:23,157 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2018-02-02 10:26:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 10:26:23,164 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:23,164 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:23,165 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-02 10:26:23,169 INFO L82 PathProgramCache]: Analyzing trace with hash -121937019, now seen corresponding path program 1 times [2018-02-02 10:26:23,201 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:23,239 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,267 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:23,267 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 10:26:23,268 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,268 INFO L182 omatonBuilderFactory]: Interpolants [70#true, 71#false] [2018-02-02 10:26:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,269 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 10:26:23,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 10:26:23,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 10:26:23,279 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 2 states. [2018-02-02 10:26:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:23,295 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2018-02-02 10:26:23,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 10:26:23,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-02-02 10:26:23,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:23,301 INFO L225 Difference]: With dead ends: 67 [2018-02-02 10:26:23,301 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 10:26:23,303 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 10:26:23,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 10:26:23,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-02 10:26:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-02 10:26:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2018-02-02 10:26:23,375 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 12 [2018-02-02 10:26:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:23,376 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2018-02-02 10:26:23,376 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 10:26:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2018-02-02 10:26:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 10:26:23,376 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:23,376 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:23,377 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-02 10:26:23,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1218496409, now seen corresponding path program 1 times [2018-02-02 10:26:23,378 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:23,389 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,446 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:23,446 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 10:26:23,446 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,447 INFO L182 omatonBuilderFactory]: Interpolants [198#true, 199#false, 200#(= 1 (select |#valid| |main_#t~malloc1.base|)), 201#(= 1 (select |#valid| main_~a~0.base)), 202#(= 1 (select |#valid| main_~p~0.base))] [2018-02-02 10:26:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,448 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:26:23,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:26:23,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:26:23,448 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2018-02-02 10:26:23,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:23,602 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2018-02-02 10:26:23,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:26:23,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 10:26:23,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:23,605 INFO L225 Difference]: With dead ends: 70 [2018-02-02 10:26:23,605 INFO L226 Difference]: Without dead ends: 70 [2018-02-02 10:26:23,605 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:26:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-02-02 10:26:23,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2018-02-02 10:26:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-02 10:26:23,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2018-02-02 10:26:23,614 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 14 [2018-02-02 10:26:23,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:23,615 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2018-02-02 10:26:23,615 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:26:23,615 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2018-02-02 10:26:23,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 10:26:23,615 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:23,616 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:23,616 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-02 10:26:23,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1218496408, now seen corresponding path program 1 times [2018-02-02 10:26:23,617 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:23,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,696 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:23,696 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 10:26:23,696 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,697 INFO L182 omatonBuilderFactory]: Interpolants [342#true, 343#false, 344#(and (= 0 |main_#t~malloc1.offset|) (= 8 (select |#length| |main_#t~malloc1.base|))), 345#(and (= 8 (select |#length| main_~a~0.base)) (= 0 main_~a~0.offset)), 346#(and (= (select |#length| main_~p~0.base) 8) (= main_~p~0.offset 0))] [2018-02-02 10:26:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:23,697 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:26:23,697 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:26:23,697 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:26:23,698 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 5 states. [2018-02-02 10:26:23,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:23,843 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2018-02-02 10:26:23,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:26:23,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 10:26:23,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:23,844 INFO L225 Difference]: With dead ends: 82 [2018-02-02 10:26:23,845 INFO L226 Difference]: Without dead ends: 82 [2018-02-02 10:26:23,845 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:26:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-02-02 10:26:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2018-02-02 10:26:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-02-02 10:26:23,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2018-02-02 10:26:23,850 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 14 [2018-02-02 10:26:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:23,850 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2018-02-02 10:26:23,850 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:26:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2018-02-02 10:26:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 10:26:23,851 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:23,851 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] [2018-02-02 10:26:23,851 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-02 10:26:23,852 INFO L82 PathProgramCache]: Analyzing trace with hash 478030, now seen corresponding path program 1 times [2018-02-02 10:26:23,853 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 10:26:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 10:26:23,900 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 10:26:23,909 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 10:26:23,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 10:26:23 BoogieIcfgContainer [2018-02-02 10:26:23,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 10:26:23,921 INFO L168 Benchmark]: Toolchain (without parser) took 1253.76 ms. Allocated memory was 397.9 MB in the beginning and 598.7 MB in the end (delta: 200.8 MB). Free memory was 356.1 MB in the beginning and 511.3 MB in the end (delta: -155.2 MB). Peak memory consumption was 45.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:23,922 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 397.9 MB. Free memory is still 361.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 10:26:23,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.60 ms. Allocated memory is still 397.9 MB. Free memory was 354.8 MB in the beginning and 344.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:23,922 INFO L168 Benchmark]: Boogie Preprocessor took 27.07 ms. Allocated memory is still 397.9 MB. Free memory was 344.2 MB in the beginning and 342.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:23,923 INFO L168 Benchmark]: RCFGBuilder took 252.75 ms. Allocated memory is still 397.9 MB. Free memory was 342.9 MB in the beginning and 319.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:23,923 INFO L168 Benchmark]: TraceAbstraction took 818.75 ms. Allocated memory was 397.9 MB in the beginning and 598.7 MB in the end (delta: 200.8 MB). Free memory was 319.6 MB in the beginning and 511.3 MB in the end (delta: -191.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:23,924 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 397.9 MB. Free memory is still 361.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 152.60 ms. Allocated memory is still 397.9 MB. Free memory was 354.8 MB in the beginning and 344.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 27.07 ms. Allocated memory is still 397.9 MB. Free memory was 344.2 MB in the beginning and 342.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 252.75 ms. Allocated memory is still 397.9 MB. Free memory was 342.9 MB in the beginning and 319.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 818.75 ms. Allocated memory was 397.9 MB in the beginning and 598.7 MB in the end (delta: 200.8 MB). Free memory was 319.6 MB in the beginning and 511.3 MB in the end (delta: -191.7 MB). Peak memory consumption was 9.1 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; VAL [flag=0] [L629] EXPR, FCALL malloc(sizeof(struct node)) VAL [flag=0, malloc(sizeof(struct node))={12:0}] [L629] a = (List) malloc(sizeof(struct node)) VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}] [L630] COND FALSE !(a == 0) VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}] [L631] p = a VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}] [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}] [L644] p = a VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}] [L645] COND FALSE !(\read(flag)) VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}] [L649] EXPR, FCALL p->h VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR, FCALL p->h VAL [a={12:0}, flag=0, malloc(sizeof(struct node))={12:0}, p={12:0}, p->h=3] [L651] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 21 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 132 SDtfs, 348 SDslu, 53 SDs, 0 SdLazy, 113 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=3, 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, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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/list_flag_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_10-26-23-930.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_flag_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_10-26-23-930.csv Received shutdown request...