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_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 19:42:49,433 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 19:42:49,435 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 19:42:49,446 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 19:42:49,446 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 19:42:49,447 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 19:42:49,448 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 19:42:49,450 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 19:42:49,451 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 19:42:49,452 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 19:42:49,452 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 19:42:49,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 19:42:49,453 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 19:42:49,454 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 19:42:49,455 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 19:42:49,457 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 19:42:49,458 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 19:42:49,459 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 19:42:49,460 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 19:42:49,461 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 19:42:49,463 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 19:42:49,463 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 19:42:49,463 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 19:42:49,464 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 19:42:49,465 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 19:42:49,466 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 19:42:49,466 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 19:42:49,467 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 19:42:49,467 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 19:42:49,467 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 19:42:49,467 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 19:42:49,468 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-04 19:42:49,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 19:42:49,477 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 19:42:49,478 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 19:42:49,478 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 19:42:49,478 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 19:42:49,479 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 19:42:49,479 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 19:42:49,479 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 19:42:49,479 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 19:42:49,479 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 19:42:49,479 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 19:42:49,479 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 19:42:49,480 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 19:42:49,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 19:42:49,480 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 19:42:49,480 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 19:42:49,480 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 19:42:49,480 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 19:42:49,481 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 19:42:49,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 19:42:49,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 19:42:49,481 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 19:42:49,481 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 19:42:49,481 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 19:42:49,508 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 19:42:49,518 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 19:42:49,520 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 19:42:49,522 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 19:42:49,522 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 19:42:49,522 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-02-04 19:42:49,657 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 19:42:49,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 19:42:49,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 19:42:49,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 19:42:49,663 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 19:42:49,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520aea50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49, skipping insertion in model container [2018-02-04 19:42:49,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,680 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 19:42:49,709 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 19:42:49,786 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 19:42:49,797 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 19:42:49,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49 WrapperNode [2018-02-04 19:42:49,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 19:42:49,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 19:42:49,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 19:42:49,803 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 19:42:49,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (1/1) ... [2018-02-04 19:42:49,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 19:42:49,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 19:42:49,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 19:42:49,827 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 19:42:49,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (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 19:42:49,862 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 19:42:49,862 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 19:42:49,862 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-02-04 19:42:49,862 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 19:42:49,862 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 19:42:49,862 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 19:42:49,863 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 19:42:50,053 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 19:42:50,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 07:42:50 BoogieIcfgContainer [2018-02-04 19:42:50,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 19:42:50,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 19:42:50,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 19:42:50,056 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 19:42:50,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 07:42:49" (1/3) ... [2018-02-04 19:42:50,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4040b6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 07:42:50, skipping insertion in model container [2018-02-04 19:42:50,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:42:49" (2/3) ... [2018-02-04 19:42:50,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4040b6fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 07:42:50, skipping insertion in model container [2018-02-04 19:42:50,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 07:42:50" (3/3) ... [2018-02-04 19:42:50,059 INFO L107 eAbstractionObserver]: Analyzing ICFG list_flag_true-unreach-call_false-valid-memtrack.i [2018-02-04 19:42:50,066 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 19:42:50,073 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-02-04 19:42:50,096 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 19:42:50,096 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 19:42:50,097 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 19:42:50,097 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 19:42:50,097 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 19:42:50,097 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 19:42:50,097 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 19:42:50,097 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 19:42:50,098 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 19:42:50,107 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2018-02-04 19:42:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-04 19:42:50,115 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:42:50,116 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:42:50,116 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]=== [2018-02-04 19:42:50,119 INFO L82 PathProgramCache]: Analyzing trace with hash -121937019, now seen corresponding path program 1 times [2018-02-04 19:42:50,120 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:42:50,120 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:42:50,153 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:42:50,153 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:42:50,153 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:42:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:42:50,192 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:42:50,216 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 19:42:50,217 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:42:50,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 19:42:50,219 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-04 19:42:50,226 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-04 19:42:50,226 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-04 19:42:50,227 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 2 states. [2018-02-04 19:42:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:42:50,243 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2018-02-04 19:42:50,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-04 19:42:50,243 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-02-04 19:42:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:42:50,248 INFO L225 Difference]: With dead ends: 67 [2018-02-04 19:42:50,249 INFO L226 Difference]: Without dead ends: 59 [2018-02-04 19:42:50,250 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 [2018-02-04 19:42:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-04 19:42:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-04 19:42:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-04 19:42:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2018-02-04 19:42:50,345 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 12 [2018-02-04 19:42:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:42:50,346 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2018-02-04 19:42:50,346 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-04 19:42:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2018-02-04 19:42:50,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 19:42:50,346 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:42:50,346 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:42:50,346 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]=== [2018-02-04 19:42:50,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1218496409, now seen corresponding path program 1 times [2018-02-04 19:42:50,347 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:42:50,347 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:42:50,348 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:42:50,348 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:42:50,348 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:42:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:42:50,355 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:42:50,409 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 19:42:50,409 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:42:50,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 19:42:50,411 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 19:42:50,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 19:42:50,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 19:42:50,412 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2018-02-04 19:42:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:42:50,535 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2018-02-04 19:42:50,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 19:42:50,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-04 19:42:50,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:42:50,538 INFO L225 Difference]: With dead ends: 70 [2018-02-04 19:42:50,538 INFO L226 Difference]: Without dead ends: 70 [2018-02-04 19:42:50,539 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 [2018-02-04 19:42:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-02-04 19:42:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2018-02-04 19:42:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-04 19:42:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2018-02-04 19:42:50,545 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 14 [2018-02-04 19:42:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:42:50,545 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2018-02-04 19:42:50,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 19:42:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2018-02-04 19:42:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 19:42:50,546 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:42:50,546 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:42:50,546 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]=== [2018-02-04 19:42:50,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1218496408, now seen corresponding path program 1 times [2018-02-04 19:42:50,547 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:42:50,547 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:42:50,547 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:42:50,548 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:42:50,548 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:42:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:42:50,559 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:42:50,617 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 19:42:50,617 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:42:50,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 19:42:50,618 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 19:42:50,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 19:42:50,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 19:42:50,618 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 5 states. [2018-02-04 19:42:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:42:50,723 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2018-02-04 19:42:50,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 19:42:50,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-04 19:42:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:42:50,724 INFO L225 Difference]: With dead ends: 82 [2018-02-04 19:42:50,724 INFO L226 Difference]: Without dead ends: 82 [2018-02-04 19:42:50,725 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 [2018-02-04 19:42:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-02-04 19:42:50,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2018-02-04 19:42:50,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-02-04 19:42:50,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2018-02-04 19:42:50,730 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 14 [2018-02-04 19:42:50,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:42:50,730 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2018-02-04 19:42:50,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 19:42:50,730 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2018-02-04 19:42:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 19:42:50,731 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:42:50,731 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] [2018-02-04 19:42:50,731 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]=== [2018-02-04 19:42:50,731 INFO L82 PathProgramCache]: Analyzing trace with hash 478030, now seen corresponding path program 1 times [2018-02-04 19:42:50,731 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:42:50,732 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:42:50,732 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:42:50,732 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:42:50,733 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:42:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 19:42:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 19:42:50,774 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 19:42:50,783 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-04 19:42:50,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 07:42:50 BoogieIcfgContainer [2018-02-04 19:42:50,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 19:42:50,793 INFO L168 Benchmark]: Toolchain (without parser) took 1135.57 ms. Allocated memory was 399.5 MB in the beginning and 611.3 MB in the end (delta: 211.8 MB). Free memory was 356.4 MB in the beginning and 523.2 MB in the end (delta: -166.8 MB). Peak memory consumption was 45.0 MB. Max. memory is 5.3 GB. [2018-02-04 19:42:50,794 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 399.5 MB. Free memory is still 361.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 19:42:50,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.93 ms. Allocated memory is still 399.5 MB. Free memory was 356.4 MB in the beginning and 345.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 19:42:50,795 INFO L168 Benchmark]: Boogie Preprocessor took 23.86 ms. Allocated memory is still 399.5 MB. Free memory was 345.8 MB in the beginning and 343.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 19:42:50,795 INFO L168 Benchmark]: RCFGBuilder took 226.89 ms. Allocated memory is still 399.5 MB. Free memory was 343.2 MB in the beginning and 321.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. [2018-02-04 19:42:50,795 INFO L168 Benchmark]: TraceAbstraction took 738.94 ms. Allocated memory was 399.5 MB in the beginning and 611.3 MB in the end (delta: 211.8 MB). Free memory was 321.2 MB in the beginning and 523.2 MB in the end (delta: -202.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 5.3 GB. [2018-02-04 19:42:50,796 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 399.5 MB. Free memory is still 361.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 142.93 ms. Allocated memory is still 399.5 MB. Free memory was 356.4 MB in the beginning and 345.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.86 ms. Allocated memory is still 399.5 MB. Free memory was 345.8 MB in the beginning and 343.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 226.89 ms. Allocated memory is still 399.5 MB. Free memory was 343.2 MB in the beginning and 321.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 738.94 ms. Allocated memory was 399.5 MB in the beginning and 611.3 MB in the end (delta: 211.8 MB). Free memory was 321.2 MB in the beginning and 523.2 MB in the end (delta: -202.0 MB). Peak memory consumption was 9.8 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: - CounterExampleResult [Line: 626]: not all allocated memory was freed not all allocated memory was freed We found a 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, 0.2s 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 proved your program to be incorrect! 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_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_19-42-50-801.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_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_19-42-50-801.csv Received shutdown request...