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/simple_built_from_end_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 10:26:29,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 10:26:29,316 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 10:26:29,328 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 10:26:29,328 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 10:26:29,329 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 10:26:29,330 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 10:26:29,331 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 10:26:29,333 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 10:26:29,333 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 10:26:29,334 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 10:26:29,334 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 10:26:29,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 10:26:29,336 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 10:26:29,337 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 10:26:29,339 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 10:26:29,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 10:26:29,342 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 10:26:29,343 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 10:26:29,344 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 10:26:29,346 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 10:26:29,347 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 10:26:29,347 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 10:26:29,348 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 10:26:29,348 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 10:26:29,349 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 10:26:29,350 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 10:26:29,350 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 10:26:29,350 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 10:26:29,350 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 10:26:29,351 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 10:26:29,351 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 10:26:29,360 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 10:26:29,360 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 10:26:29,361 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 10:26:29,361 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 10:26:29,361 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 10:26:29,361 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 10:26:29,361 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 10:26:29,361 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 10:26:29,361 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 10:26:29,361 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 10:26:29,362 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 10:26:29,362 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 10:26:29,362 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 10:26:29,362 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 10:26:29,362 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 10:26:29,362 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 10:26:29,362 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 10:26:29,362 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 10:26:29,362 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 10:26:29,363 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 10:26:29,363 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 10:26:29,363 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 10:26:29,363 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-02 10:26:29,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 10:26:29,397 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 10:26:29,400 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 10:26:29,401 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 10:26:29,401 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 10:26:29,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-02-02 10:26:29,527 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 10:26:29,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 10:26:29,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 10:26:29,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 10:26:29,532 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 10:26:29,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f42d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29, skipping insertion in model container [2018-02-02 10:26:29,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,544 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:26:29,572 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:26:29,658 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:26:29,672 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:26:29,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29 WrapperNode [2018-02-02 10:26:29,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 10:26:29,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 10:26:29,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 10:26:29,678 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 10:26:29,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (1/1) ... [2018-02-02 10:26:29,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 10:26:29,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 10:26:29,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 10:26:29,702 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 10:26:29,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (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 10:26:29,745 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 10:26:29,745 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 10:26:29,745 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-02-02 10:26:29,745 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 10:26:29,745 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 10:26:29,745 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 10:26:29,745 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 10:26:29,746 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 10:26:29,746 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 10:26:29,746 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 10:26:29,746 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 10:26:29,746 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-02 10:26:29,746 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 10:26:29,746 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 10:26:29,747 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-02-02 10:26:29,747 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 10:26:29,747 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 10:26:29,747 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 10:26:29,871 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 10:26:29,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:26:29 BoogieIcfgContainer [2018-02-02 10:26:29,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 10:26:29,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 10:26:29,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 10:26:29,874 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 10:26:29,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 10:26:29" (1/3) ... [2018-02-02 10:26:29,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b496e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:26:29, skipping insertion in model container [2018-02-02 10:26:29,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:26:29" (2/3) ... [2018-02-02 10:26:29,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b496e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:26:29, skipping insertion in model container [2018-02-02 10:26:29,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:26:29" (3/3) ... [2018-02-02 10:26:29,877 INFO L107 eAbstractionObserver]: Analyzing ICFG simple_built_from_end_true-unreach-call_false-valid-memtrack.i [2018-02-02 10:26:29,883 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 10:26:29,888 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-02-02 10:26:29,926 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 10:26:29,926 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 10:26:29,926 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-02 10:26:29,926 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 10:26:29,926 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 10:26:29,927 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 10:26:29,927 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 10:26:29,927 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 10:26:29,927 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 10:26:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-02-02 10:26:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-02-02 10:26:29,944 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:29,945 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:29,945 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:29,950 INFO L82 PathProgramCache]: Analyzing trace with hash -119107064, now seen corresponding path program 1 times [2018-02-02 10:26:29,986 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:30,012 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:30,037 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 10:26:30,039 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:30,039 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 10:26:30,040 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:30,041 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 10:26:30,041 INFO L182 omatonBuilderFactory]: Interpolants [41#true, 42#false] [2018-02-02 10:26:30,041 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 10:26:30,042 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 10:26:30,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 10:26:30,055 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 10:26:30,058 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-02-02 10:26:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:30,072 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2018-02-02 10:26:30,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 10:26:30,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-02-02 10:26:30,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:30,078 INFO L225 Difference]: With dead ends: 38 [2018-02-02 10:26:30,078 INFO L226 Difference]: Without dead ends: 31 [2018-02-02 10:26:30,079 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 10:26:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-02-02 10:26:30,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-02-02 10:26:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-02 10:26:30,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-02-02 10:26:30,165 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 9 [2018-02-02 10:26:30,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:30,165 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-02-02 10:26:30,165 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 10:26:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-02-02 10:26:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 10:26:30,166 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:30,166 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:30,166 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1438918584, now seen corresponding path program 1 times [2018-02-02 10:26:30,167 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:30,176 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:30,202 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 10:26:30,202 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:30,202 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 10:26:30,202 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:30,202 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 10:26:30,203 INFO L182 omatonBuilderFactory]: Interpolants [112#true, 113#false, 114#(= |#valid| |old(#valid)|)] [2018-02-02 10:26:30,203 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 10:26:30,203 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 10:26:30,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 10:26:30,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:26:30,204 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 3 states. [2018-02-02 10:26:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:30,246 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2018-02-02 10:26:30,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 10:26:30,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-02-02 10:26:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:30,247 INFO L225 Difference]: With dead ends: 46 [2018-02-02 10:26:30,247 INFO L226 Difference]: Without dead ends: 45 [2018-02-02 10:26:30,247 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:26:30,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-02-02 10:26:30,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2018-02-02 10:26:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-02 10:26:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-02-02 10:26:30,254 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 12 [2018-02-02 10:26:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:30,255 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-02-02 10:26:30,255 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 10:26:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-02-02 10:26:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 10:26:30,255 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:30,255 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:30,255 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:30,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1438918540, now seen corresponding path program 1 times [2018-02-02 10:26:30,256 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:30,264 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:30,286 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 10:26:30,287 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:30,287 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:26:30,287 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:30,287 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 10:26:30,287 INFO L182 omatonBuilderFactory]: Interpolants [201#true, 202#false, 203#(and (= main_~p~0.base 0) (= main_~p~0.offset 0))] [2018-02-02 10:26:30,287 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 10:26:30,287 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 10:26:30,287 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 10:26:30,287 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:26:30,288 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 3 states. [2018-02-02 10:26:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:30,327 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-02-02 10:26:30,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 10:26:30,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-02-02 10:26:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:30,328 INFO L225 Difference]: With dead ends: 46 [2018-02-02 10:26:30,328 INFO L226 Difference]: Without dead ends: 44 [2018-02-02 10:26:30,328 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 10:26:30,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-02 10:26:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2018-02-02 10:26:30,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-02 10:26:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-02-02 10:26:30,332 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 12 [2018-02-02 10:26:30,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:30,332 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-02-02 10:26:30,332 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 10:26:30,332 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-02-02 10:26:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 10:26:30,333 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:30,333 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:30,333 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:30,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1655605995, now seen corresponding path program 1 times [2018-02-02 10:26:30,334 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:30,345 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:30,371 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 10:26:30,371 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:30,372 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:26:30,372 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:30,372 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 10:26:30,372 INFO L182 omatonBuilderFactory]: Interpolants [284#true, 285#false, 286#(= 1 (select |#valid| |main_#t~malloc1.base|)), 287#(= 1 (select |#valid| main_~t~0.base))] [2018-02-02 10:26:30,373 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 10:26:30,373 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:26:30,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:26:30,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:26:30,373 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 4 states. [2018-02-02 10:26:30,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:30,404 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-02-02 10:26:30,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 10:26:30,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-02 10:26:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:30,405 INFO L225 Difference]: With dead ends: 34 [2018-02-02 10:26:30,405 INFO L226 Difference]: Without dead ends: 34 [2018-02-02 10:26:30,405 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:26:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-02-02 10:26:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-02-02 10:26:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-02 10:26:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-02-02 10:26:30,407 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 13 [2018-02-02 10:26:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:30,408 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-02-02 10:26:30,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:26:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-02-02 10:26:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 10:26:30,408 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:30,408 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:30,408 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:30,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1655605994, now seen corresponding path program 1 times [2018-02-02 10:26:30,409 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:30,421 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:30,470 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 10:26:30,470 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:30,471 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:26:30,471 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:30,471 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 10:26:30,471 INFO L182 omatonBuilderFactory]: Interpolants [357#true, 358#false, 359#(and (= 0 |main_#t~malloc1.offset|) (= 8 (select |#length| |main_#t~malloc1.base|))), 360#(and (= (select |#length| main_~t~0.base) 8) (= main_~t~0.offset 0))] [2018-02-02 10:26:30,471 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 10:26:30,471 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:26:30,472 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:26:30,472 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:26:30,472 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 4 states. [2018-02-02 10:26:30,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:30,494 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-02-02 10:26:30,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 10:26:30,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-02 10:26:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:30,495 INFO L225 Difference]: With dead ends: 32 [2018-02-02 10:26:30,495 INFO L226 Difference]: Without dead ends: 32 [2018-02-02 10:26:30,496 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:26:30,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-02 10:26:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-02-02 10:26:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-02-02 10:26:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-02-02 10:26:30,498 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 13 [2018-02-02 10:26:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:30,499 INFO L432 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-02-02 10:26:30,499 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:26:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-02-02 10:26:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 10:26:30,499 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:30,500 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:30,500 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:30,500 INFO L82 PathProgramCache]: Analyzing trace with hash -252306105, now seen corresponding path program 1 times [2018-02-02 10:26:30,500 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:30,512 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:30,545 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:30,545 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 10:26:30,545 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:30,545 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 10:26:30,545 INFO L182 omatonBuilderFactory]: Interpolants [426#true, 427#false, 428#(not (= 0 |main_#t~malloc1.base|)), 429#(not (= 0 main_~t~0.base)), 430#(not (= 0 main_~p~0.base))] [2018-02-02 10:26:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:30,546 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:26:30,546 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:26:30,546 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:26:30,546 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2018-02-02 10:26:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:30,598 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-02-02 10:26:30,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:26:30,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-02-02 10:26:30,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:30,599 INFO L225 Difference]: With dead ends: 46 [2018-02-02 10:26:30,599 INFO L226 Difference]: Without dead ends: 46 [2018-02-02 10:26:30,600 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 10:26:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-02-02 10:26:30,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 32. [2018-02-02 10:26:30,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-02 10:26:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-02-02 10:26:30,603 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 21 [2018-02-02 10:26:30,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:30,603 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-02-02 10:26:30,603 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:26:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-02-02 10:26:30,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 10:26:30,604 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:30,604 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:30,604 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:30,604 INFO L82 PathProgramCache]: Analyzing trace with hash -252306061, now seen corresponding path program 1 times [2018-02-02 10:26:30,605 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:30,614 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:30,637 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:30,637 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:26:30,638 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:30,638 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 10:26:30,638 INFO L182 omatonBuilderFactory]: Interpolants [514#true, 515#false, 516#(= 1 (select |#valid| main_~t~0.base)), 517#(= 1 (select |#valid| main_~p~0.base))] [2018-02-02 10:26:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:30,638 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:26:30,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:26:30,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:26:30,639 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 4 states. [2018-02-02 10:26:30,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:30,677 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-02-02 10:26:30,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:26:30,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-02-02 10:26:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:30,678 INFO L225 Difference]: With dead ends: 39 [2018-02-02 10:26:30,678 INFO L226 Difference]: Without dead ends: 39 [2018-02-02 10:26:30,678 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:26:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-02-02 10:26:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2018-02-02 10:26:30,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-02 10:26:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-02-02 10:26:30,681 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2018-02-02 10:26:30,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:30,681 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-02-02 10:26:30,681 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:26:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-02-02 10:26:30,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 10:26:30,682 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:30,682 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:30,682 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:30,682 INFO L82 PathProgramCache]: Analyzing trace with hash -252306060, now seen corresponding path program 1 times [2018-02-02 10:26:30,683 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:26:30,693 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:26:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:30,742 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:26:30,742 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 10:26:30,742 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:26:30,742 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 10:26:30,742 INFO L182 omatonBuilderFactory]: Interpolants [592#true, 593#false, 594#(and (= 0 |main_#t~malloc1.offset|) (= 8 (select |#length| |main_#t~malloc1.base|))), 595#(and (= 8 (select |#length| main_~t~0.base)) (= 0 main_~t~0.offset)), 596#(and (= (select |#length| main_~p~0.base) 8) (= main_~p~0.offset 0))] [2018-02-02 10:26:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:26:30,743 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:26:30,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:26:30,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:26:30,743 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 5 states. [2018-02-02 10:26:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:26:30,789 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2018-02-02 10:26:30,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:26:30,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-02-02 10:26:30,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:26:30,790 INFO L225 Difference]: With dead ends: 41 [2018-02-02 10:26:30,790 INFO L226 Difference]: Without dead ends: 41 [2018-02-02 10:26:30,790 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 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 10:26:30,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-02 10:26:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2018-02-02 10:26:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-02 10:26:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-02-02 10:26:30,793 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 21 [2018-02-02 10:26:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:26:30,793 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-02-02 10:26:30,794 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:26:30,794 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-02-02 10:26:30,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 10:26:30,794 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:26:30,794 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:26:30,794 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-02 10:26:30,795 INFO L82 PathProgramCache]: Analyzing trace with hash -633867851, now seen corresponding path program 1 times [2018-02-02 10:26:30,795 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:26:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 10:26:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 10:26:30,835 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 10:26:30,845 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 10:26:30,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 10:26:30 BoogieIcfgContainer [2018-02-02 10:26:30,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 10:26:30,858 INFO L168 Benchmark]: Toolchain (without parser) took 1330.54 ms. Allocated memory was 391.1 MB in the beginning and 587.7 MB in the end (delta: 196.6 MB). Free memory was 346.5 MB in the beginning and 455.3 MB in the end (delta: -108.8 MB). Peak memory consumption was 87.8 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:30,858 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 391.1 MB. Free memory is still 354.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 10:26:30,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.49 ms. Allocated memory is still 391.1 MB. Free memory was 345.2 MB in the beginning and 334.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:30,859 INFO L168 Benchmark]: Boogie Preprocessor took 23.80 ms. Allocated memory is still 391.1 MB. Free memory was 334.5 MB in the beginning and 333.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:30,859 INFO L168 Benchmark]: RCFGBuilder took 169.43 ms. Allocated memory is still 391.1 MB. Free memory was 333.2 MB in the beginning and 316.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:30,859 INFO L168 Benchmark]: TraceAbstraction took 984.82 ms. Allocated memory was 391.1 MB in the beginning and 587.7 MB in the end (delta: 196.6 MB). Free memory was 314.7 MB in the beginning and 455.3 MB in the end (delta: -140.6 MB). Peak memory consumption was 56.0 MB. Max. memory is 5.3 GB. [2018-02-02 10:26:30,860 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 391.1 MB. Free memory is still 354.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 149.49 ms. Allocated memory is still 391.1 MB. Free memory was 345.2 MB in the beginning and 334.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.80 ms. Allocated memory is still 391.1 MB. Free memory was 334.5 MB in the beginning and 333.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 169.43 ms. Allocated memory is still 391.1 MB. Free memory was 333.2 MB in the beginning and 316.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 984.82 ms. Allocated memory was 391.1 MB in the beginning and 587.7 MB in the end (delta: 196.6 MB). Free memory was 314.7 MB in the beginning and 455.3 MB in the end (delta: -140.6 MB). Peak memory consumption was 56.0 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] List t; [L628] List p = 0; VAL [p={0:0}] [L629] COND TRUE __VERIFIER_nondet_int() [L630] EXPR, FCALL malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={13:0}, p={0:0}] [L630] t = (List) malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={13:0}, p={0:0}, t={13:0}] [L631] COND FALSE !(t == 0) VAL [malloc(sizeof(struct node))={13:0}, p={0:0}, t={13:0}] [L632] FCALL t->h = 1 VAL [malloc(sizeof(struct node))={13:0}, p={0:0}, t={13:0}] [L633] FCALL t->n = p VAL [malloc(sizeof(struct node))={13:0}, p={0:0}, t={13:0}] [L634] p = t VAL [malloc(sizeof(struct node))={13:0}, p={13:0}, t={13:0}] [L629] COND FALSE !(__VERIFIER_nondet_int()) [L636] COND TRUE p!=0 VAL [malloc(sizeof(struct node))={13:0}, p={13:0}, t={13:0}] [L637] EXPR, FCALL p->h VAL [malloc(sizeof(struct node))={13:0}, p={13:0}, p->h=1, t={13:0}] [L637] COND FALSE !(p->h != 1) [L640] EXPR, FCALL p->n VAL [malloc(sizeof(struct node))={13:0}, p={13:0}, p->n={0:0}, t={13:0}] [L640] p = p->n [L636] COND FALSE !(p!=0) VAL [malloc(sizeof(struct node))={13:0}, p={0:0}, t={13:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 9 error locations. UNSAFE Result, 0.9s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 202 SDtfs, 262 SDslu, 144 SDs, 0 SdLazy, 154 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 9/9 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, 8 MinimizatonAttempts, 47 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 5710 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 9/9 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/simple_built_from_end_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_10-26-30-865.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_built_from_end_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_10-26-30-865.csv Received shutdown request...