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_Camel.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 14:18:39,706 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 14:18:39,708 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 14:18:39,720 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 14:18:39,720 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 14:18:39,720 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 14:18:39,721 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 14:18:39,723 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 14:18:39,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 14:18:39,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 14:18:39,726 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 14:18:39,726 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 14:18:39,727 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 14:18:39,728 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 14:18:39,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 14:18:39,730 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 14:18:39,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 14:18:39,733 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 14:18:39,734 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 14:18:39,735 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 14:18:39,737 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 14:18:39,737 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 14:18:39,737 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 14:18:39,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 14:18:39,738 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 14:18:39,739 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 14:18:39,739 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 14:18:39,740 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 14:18:39,740 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 14:18:39,740 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 14:18:39,740 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 14:18:39,741 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-04 14:18:39,749 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 14:18:39,750 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 14:18:39,750 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 14:18:39,751 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 14:18:39,751 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 14:18:39,751 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 14:18:39,751 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 14:18:39,751 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 14:18:39,751 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 14:18:39,751 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 14:18:39,752 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 14:18:39,752 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 14:18:39,752 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 14:18:39,752 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 14:18:39,752 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 14:18:39,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 14:18:39,753 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 14:18:39,753 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 14:18:39,753 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 14:18:39,753 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 14:18:39,753 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 14:18:39,753 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 14:18:39,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 14:18:39,753 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-04 14:18:39,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 14:18:39,790 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 14:18:39,792 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 14:18:39,793 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 14:18:39,793 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 14:18:39,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-02-04 14:18:39,914 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 14:18:39,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 14:18:39,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 14:18:39,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 14:18:39,919 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 14:18:39,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 02:18:39" (1/1) ... [2018-02-04 14:18:39,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db90158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:39, skipping insertion in model container [2018-02-04 14:18:39,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 02:18:39" (1/1) ... [2018-02-04 14:18:39,931 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 14:18:39,957 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 14:18:40,045 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 14:18:40,059 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 14:18:40,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40 WrapperNode [2018-02-04 14:18:40,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 14:18:40,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 14:18:40,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 14:18:40,066 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 14:18:40,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (1/1) ... [2018-02-04 14:18:40,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (1/1) ... [2018-02-04 14:18:40,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (1/1) ... [2018-02-04 14:18:40,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (1/1) ... [2018-02-04 14:18:40,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (1/1) ... [2018-02-04 14:18:40,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (1/1) ... [2018-02-04 14:18:40,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (1/1) ... [2018-02-04 14:18:40,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 14:18:40,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 14:18:40,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 14:18:40,097 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 14:18:40,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (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 14:18:40,137 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 14:18:40,137 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 14:18:40,137 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-02-04 14:18:40,138 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 14:18:40,138 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 14:18:40,138 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 14:18:40,138 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 14:18:40,138 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 14:18:40,138 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 14:18:40,138 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 14:18:40,138 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 14:18:40,139 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-04 14:18:40,139 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 14:18:40,139 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 14:18:40,139 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-02-04 14:18:40,139 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 14:18:40,139 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 14:18:40,139 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 14:18:40,318 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 14:18:40,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 02:18:40 BoogieIcfgContainer [2018-02-04 14:18:40,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 14:18:40,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 14:18:40,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 14:18:40,321 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 14:18:40,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 02:18:39" (1/3) ... [2018-02-04 14:18:40,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d200fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 02:18:40, skipping insertion in model container [2018-02-04 14:18:40,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:18:40" (2/3) ... [2018-02-04 14:18:40,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d200fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 02:18:40, skipping insertion in model container [2018-02-04 14:18:40,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 02:18:40" (3/3) ... [2018-02-04 14:18:40,323 INFO L107 eAbstractionObserver]: Analyzing ICFG list_flag_true-unreach-call_false-valid-memtrack.i [2018-02-04 14:18:40,330 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 14:18:40,334 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-02-04 14:18:40,357 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 14:18:40,357 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 14:18:40,357 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 14:18:40,358 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 14:18:40,358 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 14:18:40,358 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 14:18:40,358 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 14:18:40,358 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 14:18:40,359 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 14:18:40,369 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2018-02-04 14:18:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-04 14:18:40,377 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:18:40,378 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:18:40,378 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 14:18:40,381 INFO L82 PathProgramCache]: Analyzing trace with hash -121937019, now seen corresponding path program 1 times [2018-02-04 14:18:40,382 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 14:18:40,382 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 14:18:40,414 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 14:18:40,414 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 14:18:40,415 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 14:18:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:18:40,456 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:18:40,481 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 14:18:40,483 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:18:40,483 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 14:18:40,484 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-04 14:18:40,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-04 14:18:40,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-04 14:18:40,494 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 2 states. [2018-02-04 14:18:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:18:40,511 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2018-02-04 14:18:40,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-04 14:18:40,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-02-04 14:18:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:18:40,517 INFO L225 Difference]: With dead ends: 67 [2018-02-04 14:18:40,518 INFO L226 Difference]: Without dead ends: 59 [2018-02-04 14:18:40,519 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 14:18:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-04 14:18:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-04 14:18:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-04 14:18:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2018-02-04 14:18:40,616 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 12 [2018-02-04 14:18:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:18:40,616 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2018-02-04 14:18:40,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-04 14:18:40,616 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2018-02-04 14:18:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 14:18:40,617 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:18:40,617 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:18:40,617 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 14:18:40,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1218496409, now seen corresponding path program 1 times [2018-02-04 14:18:40,617 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 14:18:40,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 14:18:40,618 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 14:18:40,618 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 14:18:40,619 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 14:18:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:18:40,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:18:40,685 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 14:18:40,685 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:18:40,686 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 14:18:40,687 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 14:18:40,687 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 14:18:40,687 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 14:18:40,688 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2018-02-04 14:18:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:18:40,837 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2018-02-04 14:18:40,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 14:18:40,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-04 14:18:40,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:18:40,839 INFO L225 Difference]: With dead ends: 70 [2018-02-04 14:18:40,839 INFO L226 Difference]: Without dead ends: 70 [2018-02-04 14:18:40,840 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 14:18:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-02-04 14:18:40,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2018-02-04 14:18:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-04 14:18:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2018-02-04 14:18:40,846 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 14 [2018-02-04 14:18:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:18:40,846 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2018-02-04 14:18:40,846 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 14:18:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2018-02-04 14:18:40,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 14:18:40,847 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:18:40,847 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:18:40,847 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 14:18:40,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1218496408, now seen corresponding path program 1 times [2018-02-04 14:18:40,847 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 14:18:40,847 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 14:18:40,848 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 14:18:40,848 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 14:18:40,848 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 14:18:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:18:40,860 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:18:40,918 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 14:18:40,919 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:18:40,919 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 14:18:40,919 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 14:18:40,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 14:18:40,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 14:18:40,920 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand 5 states. [2018-02-04 14:18:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:18:41,049 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2018-02-04 14:18:41,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 14:18:41,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-04 14:18:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:18:41,050 INFO L225 Difference]: With dead ends: 82 [2018-02-04 14:18:41,051 INFO L226 Difference]: Without dead ends: 82 [2018-02-04 14:18:41,051 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 14:18:41,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-02-04 14:18:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2018-02-04 14:18:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-02-04 14:18:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2018-02-04 14:18:41,056 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 14 [2018-02-04 14:18:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:18:41,056 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2018-02-04 14:18:41,056 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 14:18:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2018-02-04 14:18:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 14:18:41,057 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:18:41,057 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 14:18:41,057 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 14:18:41,057 INFO L82 PathProgramCache]: Analyzing trace with hash 478030, now seen corresponding path program 1 times [2018-02-04 14:18:41,057 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 14:18:41,057 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 14:18:41,058 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 14:18:41,058 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 14:18:41,058 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 14:18:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 14:18:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 14:18:41,101 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 14:18:41,111 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-04 14:18:41,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 02:18:41 BoogieIcfgContainer [2018-02-04 14:18:41,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 14:18:41,124 INFO L168 Benchmark]: Toolchain (without parser) took 1210.39 ms. Allocated memory was 401.1 MB in the beginning and 616.6 MB in the end (delta: 215.5 MB). Free memory was 359.1 MB in the beginning and 529.0 MB in the end (delta: -169.9 MB). Peak memory consumption was 45.6 MB. Max. memory is 5.3 GB. [2018-02-04 14:18:41,126 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 401.1 MB. Free memory is still 364.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 14:18:41,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.69 ms. Allocated memory is still 401.1 MB. Free memory was 357.8 MB in the beginning and 347.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 14:18:41,127 INFO L168 Benchmark]: Boogie Preprocessor took 30.55 ms. Allocated memory is still 401.1 MB. Free memory was 347.2 MB in the beginning and 345.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 14:18:41,127 INFO L168 Benchmark]: RCFGBuilder took 221.81 ms. Allocated memory is still 401.1 MB. Free memory was 345.9 MB in the beginning and 322.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 5.3 GB. [2018-02-04 14:18:41,127 INFO L168 Benchmark]: TraceAbstraction took 804.79 ms. Allocated memory was 401.1 MB in the beginning and 616.6 MB in the end (delta: 215.5 MB). Free memory was 322.1 MB in the beginning and 529.0 MB in the end (delta: -206.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-02-04 14:18:41,129 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 401.1 MB. Free memory is still 364.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 150.69 ms. Allocated memory is still 401.1 MB. Free memory was 357.8 MB in the beginning and 347.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.55 ms. Allocated memory is still 401.1 MB. Free memory was 347.2 MB in the beginning and 345.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 221.81 ms. Allocated memory is still 401.1 MB. Free memory was 345.9 MB in the beginning and 322.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 804.79 ms. Allocated memory was 401.1 MB in the beginning and 616.6 MB in the end (delta: 215.5 MB). Free memory was 322.1 MB in the beginning and 529.0 MB in the end (delta: -206.9 MB). Peak memory consumption was 8.6 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, 0.3s 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 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_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_14-18-41-135.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_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_14-18-41-135.csv Received shutdown request...