java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test9_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 21:10:04,634 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 21:10:04,636 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 21:10:04,648 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 21:10:04,648 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 21:10:04,649 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 21:10:04,650 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 21:10:04,652 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 21:10:04,653 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 21:10:04,654 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 21:10:04,655 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 21:10:04,655 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 21:10:04,656 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 21:10:04,657 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 21:10:04,657 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 21:10:04,659 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 21:10:04,661 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 21:10:04,662 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 21:10:04,663 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 21:10:04,664 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 21:10:04,666 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 21:10:04,670 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 21:10:04,670 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 21:10:04,671 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-02 21:10:04,680 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 21:10:04,680 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 21:10:04,681 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 21:10:04,681 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 21:10:04,682 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 21:10:04,682 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 21:10:04,682 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 21:10:04,682 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 21:10:04,682 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 21:10:04,682 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 21:10:04,682 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 21:10:04,682 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 21:10:04,682 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 21:10:04,683 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 21:10:04,683 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 21:10:04,683 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 21:10:04,683 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 21:10:04,683 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 21:10:04,683 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 21:10:04,683 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 21:10:04,683 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 21:10:04,683 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 21:10:04,684 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 21:10:04,684 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 21:10:04,684 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-02 21:10:04,712 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 21:10:04,720 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 21:10:04,722 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 21:10:04,723 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 21:10:04,723 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 21:10:04,724 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test9_true-valid-memsafety_true-termination.i [2018-02-02 21:10:04,851 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 21:10:04,852 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 21:10:04,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 21:10:04,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 21:10:04,857 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 21:10:04,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:10:04" (1/1) ... [2018-02-02 21:10:04,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d135a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:04, skipping insertion in model container [2018-02-02 21:10:04,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:10:04" (1/1) ... [2018-02-02 21:10:04,869 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:10:04,902 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:10:04,986 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:10:04,997 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:10:05,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05 WrapperNode [2018-02-02 21:10:05,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 21:10:05,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 21:10:05,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 21:10:05,003 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 21:10:05,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (1/1) ... [2018-02-02 21:10:05,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (1/1) ... [2018-02-02 21:10:05,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (1/1) ... [2018-02-02 21:10:05,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (1/1) ... [2018-02-02 21:10:05,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (1/1) ... [2018-02-02 21:10:05,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (1/1) ... [2018-02-02 21:10:05,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (1/1) ... [2018-02-02 21:10:05,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 21:10:05,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 21:10:05,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 21:10:05,027 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 21:10:05,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (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 21:10:05,062 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 21:10:05,062 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 21:10:05,062 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-02 21:10:05,062 INFO L136 BoogieDeclarations]: Found implementation of procedure probe_9 [2018-02-02 21:10:05,062 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_9 [2018-02-02 21:10:05,062 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-02 21:10:05,062 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 21:10:05,062 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 21:10:05,062 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 21:10:05,062 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure probe_9 [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_9 [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 21:10:05,063 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 21:10:05,163 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 21:10:05,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:10:05 BoogieIcfgContainer [2018-02-02 21:10:05,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 21:10:05,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 21:10:05,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 21:10:05,167 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 21:10:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:10:04" (1/3) ... [2018-02-02 21:10:05,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b63072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:10:05, skipping insertion in model container [2018-02-02 21:10:05,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:05" (2/3) ... [2018-02-02 21:10:05,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b63072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:10:05, skipping insertion in model container [2018-02-02 21:10:05,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:10:05" (3/3) ... [2018-02-02 21:10:05,169 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test9_true-valid-memsafety_true-termination.i [2018-02-02 21:10:05,174 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 21:10:05,179 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-02 21:10:05,207 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 21:10:05,207 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 21:10:05,207 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 21:10:05,207 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 21:10:05,207 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 21:10:05,207 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 21:10:05,208 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 21:10:05,208 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 21:10:05,208 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 21:10:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-02-02 21:10:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 21:10:05,222 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:05,223 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] [2018-02-02 21:10:05,223 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-02 21:10:05,225 INFO L82 PathProgramCache]: Analyzing trace with hash 637985235, now seen corresponding path program 1 times [2018-02-02 21:10:05,226 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:05,227 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:05,272 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:05,273 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:05,273 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:05,323 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:05,439 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 21:10:05,441 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:05,441 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:10:05,442 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:10:05,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:10:05,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:10:05,455 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2018-02-02 21:10:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:05,575 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-02-02 21:10:05,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:10:05,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-02 21:10:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:05,584 INFO L225 Difference]: With dead ends: 47 [2018-02-02 21:10:05,584 INFO L226 Difference]: Without dead ends: 44 [2018-02-02 21:10:05,586 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-02 21:10:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-02-02 21:10:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-02-02 21:10:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-02-02 21:10:05,609 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 20 [2018-02-02 21:10:05,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:05,609 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-02-02 21:10:05,609 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:10:05,609 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-02-02 21:10:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 21:10:05,610 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:05,610 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:05,610 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-02 21:10:05,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1778317329, now seen corresponding path program 1 times [2018-02-02 21:10:05,610 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:05,610 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:05,612 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:05,612 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:05,612 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:05,632 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:10:05,685 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:05,685 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:10:05,686 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:10:05,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:10:05,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:10:05,686 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2018-02-02 21:10:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:05,763 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-02-02 21:10:05,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 21:10:05,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-02-02 21:10:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:05,767 INFO L225 Difference]: With dead ends: 42 [2018-02-02 21:10:05,767 INFO L226 Difference]: Without dead ends: 42 [2018-02-02 21:10:05,768 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-02-02 21:10:05,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-02 21:10:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-02-02 21:10:05,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-02-02 21:10:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-02-02 21:10:05,773 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 22 [2018-02-02 21:10:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:05,774 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-02-02 21:10:05,774 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:10:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-02-02 21:10:05,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 21:10:05,775 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:05,775 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:05,775 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-02 21:10:05,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1778317330, now seen corresponding path program 1 times [2018-02-02 21:10:05,775 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:05,775 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:05,777 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:05,777 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:05,777 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:05,790 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:05,839 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 21:10:05,839 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:05,839 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:10:05,840 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:10:05,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:10:05,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:10:05,840 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 6 states. [2018-02-02 21:10:05,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:05,917 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-02-02 21:10:05,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 21:10:05,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-02-02 21:10:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:05,918 INFO L225 Difference]: With dead ends: 48 [2018-02-02 21:10:05,918 INFO L226 Difference]: Without dead ends: 48 [2018-02-02 21:10:05,919 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-02 21:10:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 33. [2018-02-02 21:10:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-02 21:10:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-02-02 21:10:05,926 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2018-02-02 21:10:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:05,926 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-02-02 21:10:05,926 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:10:05,926 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-02-02 21:10:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 21:10:05,927 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:05,927 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:05,927 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-02 21:10:05,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1413293605, now seen corresponding path program 1 times [2018-02-02 21:10:05,927 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:05,927 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:05,929 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:05,929 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:05,929 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:05,938 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:05,961 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 21:10:05,961 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:05,961 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 21:10:05,961 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 21:10:05,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 21:10:05,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 21:10:05,962 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 3 states. [2018-02-02 21:10:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:06,007 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-02-02 21:10:06,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 21:10:06,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-02-02 21:10:06,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:06,008 INFO L225 Difference]: With dead ends: 42 [2018-02-02 21:10:06,008 INFO L226 Difference]: Without dead ends: 38 [2018-02-02 21:10:06,009 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 21:10:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-02 21:10:06,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-02-02 21:10:06,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 21:10:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-02 21:10:06,013 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 22 [2018-02-02 21:10:06,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:06,014 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-02 21:10:06,014 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 21:10:06,014 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-02 21:10:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 21:10:06,015 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:06,015 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, 1, 1] [2018-02-02 21:10:06,015 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-02 21:10:06,015 INFO L82 PathProgramCache]: Analyzing trace with hash -431737374, now seen corresponding path program 1 times [2018-02-02 21:10:06,015 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:06,015 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:06,016 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:06,016 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:06,016 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:06,026 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:06,051 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 21:10:06,051 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:06,051 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:10:06,051 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:10:06,051 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:10:06,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:10:06,052 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2018-02-02 21:10:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:06,061 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-02-02 21:10:06,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:10:06,062 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-02-02 21:10:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:06,062 INFO L225 Difference]: With dead ends: 44 [2018-02-02 21:10:06,062 INFO L226 Difference]: Without dead ends: 44 [2018-02-02 21:10:06,063 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:10:06,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-02 21:10:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2018-02-02 21:10:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 21:10:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-02 21:10:06,066 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2018-02-02 21:10:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:06,066 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-02 21:10:06,067 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:10:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-02 21:10:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 21:10:06,067 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:06,067 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, 1, 1] [2018-02-02 21:10:06,068 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-02 21:10:06,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2055775459, now seen corresponding path program 1 times [2018-02-02 21:10:06,068 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:06,068 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:06,069 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:06,069 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:06,069 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:06,079 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:06,106 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 21:10:06,106 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:06,106 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:10:06,107 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:10:06,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:10:06,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:10:06,107 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2018-02-02 21:10:06,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:06,136 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-02-02 21:10:06,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 21:10:06,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-02 21:10:06,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:06,137 INFO L225 Difference]: With dead ends: 42 [2018-02-02 21:10:06,137 INFO L226 Difference]: Without dead ends: 42 [2018-02-02 21:10:06,137 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:06,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-02 21:10:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2018-02-02 21:10:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-02 21:10:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-02-02 21:10:06,141 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2018-02-02 21:10:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:06,141 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-02-02 21:10:06,141 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:10:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-02-02 21:10:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 21:10:06,142 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:06,142 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, 1, 1, 1, 1] [2018-02-02 21:10:06,142 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-02 21:10:06,142 INFO L82 PathProgramCache]: Analyzing trace with hash -119628224, now seen corresponding path program 1 times [2018-02-02 21:10:06,142 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:06,143 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:06,144 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:06,144 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:06,144 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:06,152 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:06,205 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 21:10:06,205 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:06,205 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:10:06,205 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 21:10:06,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 21:10:06,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:06,206 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 7 states. [2018-02-02 21:10:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:06,273 INFO L93 Difference]: Finished difference Result 45 states and 44 transitions. [2018-02-02 21:10:06,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 21:10:06,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-02-02 21:10:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:06,274 INFO L225 Difference]: With dead ends: 45 [2018-02-02 21:10:06,275 INFO L226 Difference]: Without dead ends: 29 [2018-02-02 21:10:06,275 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-02-02 21:10:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-02-02 21:10:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-02-02 21:10:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2018-02-02 21:10:06,277 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 26 [2018-02-02 21:10:06,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:06,278 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2018-02-02 21:10:06,278 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 21:10:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2018-02-02 21:10:06,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-02 21:10:06,278 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:06,278 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, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:06,279 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-02 21:10:06,279 INFO L82 PathProgramCache]: Analyzing trace with hash 221087613, now seen corresponding path program 1 times [2018-02-02 21:10:06,279 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:06,279 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:06,280 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:06,280 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:06,280 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:06,294 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:06,301 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Unknown lemma type! at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-02 21:10:06,304 INFO L168 Benchmark]: Toolchain (without parser) took 1452.70 ms. Allocated memory was 405.8 MB in the beginning and 604.0 MB in the end (delta: 198.2 MB). Free memory was 362.5 MB in the beginning and 465.2 MB in the end (delta: -102.7 MB). Peak memory consumption was 95.5 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:06,306 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 405.8 MB. Free memory is still 367.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:10:06,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.29 ms. Allocated memory is still 405.8 MB. Free memory was 362.5 MB in the beginning and 349.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:06,306 INFO L168 Benchmark]: Boogie Preprocessor took 23.50 ms. Allocated memory is still 405.8 MB. Free memory was 349.3 MB in the beginning and 346.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:06,306 INFO L168 Benchmark]: RCFGBuilder took 137.00 ms. Allocated memory is still 405.8 MB. Free memory was 346.6 MB in the beginning and 332.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:06,306 INFO L168 Benchmark]: TraceAbstraction took 1139.26 ms. Allocated memory was 405.8 MB in the beginning and 604.0 MB in the end (delta: 198.2 MB). Free memory was 332.1 MB in the beginning and 465.2 MB in the end (delta: -133.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:06,308 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 405.8 MB. Free memory is still 367.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 150.29 ms. Allocated memory is still 405.8 MB. Free memory was 362.5 MB in the beginning and 349.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.50 ms. Allocated memory is still 405.8 MB. Free memory was 349.3 MB in the beginning and 346.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 137.00 ms. Allocated memory is still 405.8 MB. Free memory was 346.6 MB in the beginning and 332.1 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1139.26 ms. Allocated memory was 405.8 MB in the beginning and 604.0 MB in the end (delta: 198.2 MB). Free memory was 332.1 MB in the beginning and 465.2 MB in the end (delta: -133.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Unknown lemma type! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Unknown lemma type!: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_21-10-06-315.csv Received shutdown request...