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-c17473d-m [2018-02-04 19:35:14,574 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 19:35:14,575 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 19:35:14,587 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 19:35:14,587 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 19:35:14,588 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 19:35:14,588 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 19:35:14,590 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 19:35:14,591 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 19:35:14,592 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 19:35:14,592 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 19:35:14,593 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 19:35:14,593 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 19:35:14,594 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 19:35:14,595 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 19:35:14,597 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 19:35:14,598 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 19:35:14,599 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 19:35:14,600 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 19:35:14,601 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 19:35:14,603 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 19:35:14,607 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-04 19:35:14,616 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 19:35:14,617 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 19:35:14,618 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 19:35:14,618 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 19:35:14,618 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 19:35:14,618 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 19:35:14,618 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 19:35:14,618 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 19:35:14,619 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 19:35:14,619 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 19:35:14,619 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 19:35:14,619 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 19:35:14,619 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 19:35:14,619 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 19:35:14,620 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 19:35:14,620 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 19:35:14,620 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 19:35:14,620 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 19:35:14,620 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 19:35:14,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 19:35:14,620 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 19:35:14,621 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 19:35:14,621 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 19:35:14,621 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 19:35:14,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 19:35:14,660 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 19:35:14,663 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 19:35:14,664 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 19:35:14,664 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 19:35:14,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test9_true-valid-memsafety_true-termination.i [2018-02-04 19:35:14,809 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 19:35:14,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 19:35:14,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 19:35:14,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 19:35:14,817 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 19:35:14,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,820 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 04.02 07:35:14, skipping insertion in model container [2018-02-04 19:35:14,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,834 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 19:35:14,873 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 19:35:14,950 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 19:35:14,960 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 19:35:14,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14 WrapperNode [2018-02-04 19:35:14,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 19:35:14,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 19:35:14,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 19:35:14,965 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 19:35:14,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (1/1) ... [2018-02-04 19:35:14,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 19:35:14,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 19:35:14,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 19:35:14,986 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 19:35:14,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 19:35:15,019 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 19:35:15,020 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 19:35:15,020 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 19:35:15,020 INFO L136 BoogieDeclarations]: Found implementation of procedure probe_9 [2018-02-04 19:35:15,020 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_9 [2018-02-04 19:35:15,020 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 19:35:15,020 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 19:35:15,020 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure probe_9 [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_9 [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 19:35:15,021 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 19:35:15,022 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 19:35:15,022 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 19:35:15,137 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 19:35:15,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 07:35:15 BoogieIcfgContainer [2018-02-04 19:35:15,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 19:35:15,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 19:35:15,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 19:35:15,140 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 19:35:15,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 07:35:14" (1/3) ... [2018-02-04 19:35:15,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7219e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 07:35:15, skipping insertion in model container [2018-02-04 19:35:15,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 07:35:14" (2/3) ... [2018-02-04 19:35:15,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7219e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 07:35:15, skipping insertion in model container [2018-02-04 19:35:15,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 07:35:15" (3/3) ... [2018-02-04 19:35:15,142 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test9_true-valid-memsafety_true-termination.i [2018-02-04 19:35:15,147 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 19:35:15,151 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 19:35:15,181 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 19:35:15,181 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 19:35:15,182 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 19:35:15,182 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 19:35:15,182 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 19:35:15,182 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 19:35:15,182 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 19:35:15,182 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 19:35:15,183 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 19:35:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-02-04 19:35:15,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 19:35:15,201 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:15,202 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] [2018-02-04 19:35:15,202 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 19:35:15,206 INFO L82 PathProgramCache]: Analyzing trace with hash 637985235, now seen corresponding path program 1 times [2018-02-04 19:35:15,208 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:15,208 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:15,245 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,245 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:15,246 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:15,291 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:15,392 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:15,392 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 19:35:15,394 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 19:35:15,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 19:35:15,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 19:35:15,408 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2018-02-04 19:35:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:15,542 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-02-04 19:35:15,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 19:35:15,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-04 19:35:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:15,550 INFO L225 Difference]: With dead ends: 47 [2018-02-04 19:35:15,550 INFO L226 Difference]: Without dead ends: 44 [2018-02-04 19:35:15,552 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 [2018-02-04 19:35:15,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-04 19:35:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-02-04 19:35:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-02-04 19:35:15,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-02-04 19:35:15,574 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 20 [2018-02-04 19:35:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:15,574 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-02-04 19:35:15,574 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 19:35:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-02-04 19:35:15,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 19:35:15,575 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:15,575 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:35:15,575 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 19:35:15,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1778317329, now seen corresponding path program 1 times [2018-02-04 19:35:15,576 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:15,576 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:15,577 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,577 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:15,577 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:15,595 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:15,638 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:15,638 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 19:35:15,639 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 19:35:15,640 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 19:35:15,640 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 19:35:15,640 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2018-02-04 19:35:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:15,695 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-02-04 19:35:15,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 19:35:15,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-02-04 19:35:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:15,699 INFO L225 Difference]: With dead ends: 42 [2018-02-04 19:35:15,699 INFO L226 Difference]: Without dead ends: 42 [2018-02-04 19:35:15,700 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 [2018-02-04 19:35:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-04 19:35:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-02-04 19:35:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-02-04 19:35:15,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-02-04 19:35:15,705 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 22 [2018-02-04 19:35:15,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:15,706 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-02-04 19:35:15,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 19:35:15,706 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-02-04 19:35:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 19:35:15,706 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:15,707 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:35:15,707 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 19:35:15,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1778317330, now seen corresponding path program 1 times [2018-02-04 19:35:15,707 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:15,707 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:15,708 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,708 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:15,708 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:15,723 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:15,767 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:15,767 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 19:35:15,768 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 19:35:15,768 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 19:35:15,768 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 19:35:15,768 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 6 states. [2018-02-04 19:35:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:15,824 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-02-04 19:35:15,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 19:35:15,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-02-04 19:35:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:15,826 INFO L225 Difference]: With dead ends: 48 [2018-02-04 19:35:15,826 INFO L226 Difference]: Without dead ends: 48 [2018-02-04 19:35:15,826 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 [2018-02-04 19:35:15,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-04 19:35:15,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 33. [2018-02-04 19:35:15,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-04 19:35:15,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-02-04 19:35:15,833 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 22 [2018-02-04 19:35:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:15,833 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-02-04 19:35:15,833 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 19:35:15,833 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-02-04 19:35:15,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 19:35:15,834 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:15,834 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 19:35:15,834 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 19:35:15,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1413293605, now seen corresponding path program 1 times [2018-02-04 19:35:15,835 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:15,835 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:15,836 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,836 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:15,836 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:15,847 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:15,872 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:15,872 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 19:35:15,872 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 19:35:15,872 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 19:35:15,872 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 19:35:15,873 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 3 states. [2018-02-04 19:35:15,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:15,898 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-02-04 19:35:15,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 19:35:15,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-02-04 19:35:15,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:15,899 INFO L225 Difference]: With dead ends: 42 [2018-02-04 19:35:15,900 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 19:35:15,900 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 [2018-02-04 19:35:15,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 19:35:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-02-04 19:35:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-04 19:35:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-04 19:35:15,904 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 22 [2018-02-04 19:35:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:15,905 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-04 19:35:15,905 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 19:35:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-04 19:35:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 19:35:15,905 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:15,906 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] [2018-02-04 19:35:15,906 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 19:35:15,906 INFO L82 PathProgramCache]: Analyzing trace with hash -431737374, now seen corresponding path program 1 times [2018-02-04 19:35:15,906 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:15,906 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:15,907 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,907 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:15,907 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:15,917 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:15,944 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:15,944 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 19:35:15,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 19:35:15,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 19:35:15,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 19:35:15,945 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2018-02-04 19:35:15,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:15,953 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2018-02-04 19:35:15,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 19:35:15,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-02-04 19:35:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:15,953 INFO L225 Difference]: With dead ends: 44 [2018-02-04 19:35:15,954 INFO L226 Difference]: Without dead ends: 44 [2018-02-04 19:35:15,954 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 [2018-02-04 19:35:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-04 19:35:15,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2018-02-04 19:35:15,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-04 19:35:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-04 19:35:15,956 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2018-02-04 19:35:15,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:15,956 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-04 19:35:15,956 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 19:35:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-04 19:35:15,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 19:35:15,956 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:15,957 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] [2018-02-04 19:35:15,957 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 19:35:15,957 INFO L82 PathProgramCache]: Analyzing trace with hash 2055775459, now seen corresponding path program 1 times [2018-02-04 19:35:15,957 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:15,957 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:15,958 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,958 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:15,958 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:15,972 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:15,998 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:15,999 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 19:35:15,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 19:35:15,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 19:35:15,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 19:35:15,999 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2018-02-04 19:35:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:16,022 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-02-04 19:35:16,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 19:35:16,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-04 19:35:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:16,023 INFO L225 Difference]: With dead ends: 42 [2018-02-04 19:35:16,023 INFO L226 Difference]: Without dead ends: 42 [2018-02-04 19:35:16,023 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 [2018-02-04 19:35:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-04 19:35:16,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2018-02-04 19:35:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-04 19:35:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-02-04 19:35:16,025 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2018-02-04 19:35:16,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:16,025 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-02-04 19:35:16,025 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 19:35:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-02-04 19:35:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-04 19:35:16,026 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:16,026 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] [2018-02-04 19:35:16,026 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 19:35:16,026 INFO L82 PathProgramCache]: Analyzing trace with hash -119628224, now seen corresponding path program 1 times [2018-02-04 19:35:16,026 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:16,026 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:16,027 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:16,027 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:16,027 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:16,032 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:16,077 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:16,077 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 19:35:16,078 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 19:35:16,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 19:35:16,078 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-02-04 19:35:16,078 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 7 states. [2018-02-04 19:35:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:16,126 INFO L93 Difference]: Finished difference Result 45 states and 44 transitions. [2018-02-04 19:35:16,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 19:35:16,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-02-04 19:35:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:16,127 INFO L225 Difference]: With dead ends: 45 [2018-02-04 19:35:16,127 INFO L226 Difference]: Without dead ends: 29 [2018-02-04 19:35:16,127 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 [2018-02-04 19:35:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-02-04 19:35:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-02-04 19:35:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-02-04 19:35:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2018-02-04 19:35:16,129 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 26 [2018-02-04 19:35:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:16,129 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2018-02-04 19:35:16,129 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 19:35:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2018-02-04 19:35:16,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-04 19:35:16,129 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 19:35:16,129 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] [2018-02-04 19:35:16,129 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 19:35:16,129 INFO L82 PathProgramCache]: Analyzing trace with hash 221087613, now seen corresponding path program 1 times [2018-02-04 19:35:16,130 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 19:35:16,130 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 19:35:16,130 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:16,131 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:16,131 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 19:35:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:16,145 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 19:35:16,152 INFO L430 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown lemma type! [2018-02-04 19:35:16,152 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 19:35:16,152 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 19:35:16,153 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 19:35:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 19:35:16,184 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 19:35:16,275 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 8 [2018-02-04 19:35:16,276 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 19:35:16,278 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 8 [2018-02-04 19:35:16,278 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-04 19:35:16,284 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-04 19:35:16,285 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:27, output treesize:17 [2018-02-04 19:35:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 19:35:16,356 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 19:35:16,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-02-04 19:35:16,356 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-04 19:35:16,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-04 19:35:16,357 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=83, Unknown=5, NotChecked=0, Total=110 [2018-02-04 19:35:16,357 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand 11 states. [2018-02-04 19:35:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 19:35:16,447 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2018-02-04 19:35:16,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 19:35:16,447 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-02-04 19:35:16,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 19:35:16,448 INFO L225 Difference]: With dead ends: 28 [2018-02-04 19:35:16,448 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 19:35:16,448 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=119, Unknown=5, NotChecked=0, Total=156 [2018-02-04 19:35:16,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 19:35:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 19:35:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 19:35:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 19:35:16,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-02-04 19:35:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 19:35:16,449 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 19:35:16,449 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-04 19:35:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 19:35:16,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 19:35:16,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 07:35:16 BoogieIcfgContainer [2018-02-04 19:35:16,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 19:35:16,455 INFO L168 Benchmark]: Toolchain (without parser) took 1645.08 ms. Allocated memory was 403.2 MB in the beginning and 607.6 MB in the end (delta: 204.5 MB). Free memory was 360.1 MB in the beginning and 419.0 MB in the end (delta: -59.0 MB). Peak memory consumption was 145.5 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:16,455 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 403.2 MB. Free memory is still 365.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 19:35:16,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.50 ms. Allocated memory is still 403.2 MB. Free memory was 360.1 MB in the beginning and 346.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:16,456 INFO L168 Benchmark]: Boogie Preprocessor took 21.53 ms. Allocated memory is still 403.2 MB. Free memory was 346.8 MB in the beginning and 344.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:16,456 INFO L168 Benchmark]: RCFGBuilder took 151.69 ms. Allocated memory is still 403.2 MB. Free memory was 344.2 MB in the beginning and 330.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:16,456 INFO L168 Benchmark]: TraceAbstraction took 1315.53 ms. Allocated memory was 403.2 MB in the beginning and 607.6 MB in the end (delta: 204.5 MB). Free memory was 330.2 MB in the beginning and 419.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 115.6 MB. Max. memory is 5.3 GB. [2018-02-04 19:35:16,457 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 403.2 MB. Free memory is still 365.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 153.50 ms. Allocated memory is still 403.2 MB. Free memory was 360.1 MB in the beginning and 346.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 21.53 ms. Allocated memory is still 403.2 MB. Free memory was 346.8 MB in the beginning and 344.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 151.69 ms. Allocated memory is still 403.2 MB. Free memory was 344.2 MB in the beginning and 330.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1315.53 ms. Allocated memory was 403.2 MB in the beginning and 607.6 MB in the end (delta: 204.5 MB). Free memory was 330.2 MB in the beginning and 419.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 115.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1456]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 34 locations, 3 error locations. SAFE Result, 1.2s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 241 SDtfs, 91 SDslu, 617 SDs, 0 SdLazy, 295 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 33 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 180 ConstructedInterpolants, 4 QuantifiedInterpolants, 16752 SizeOfPredicates, 3 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! 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-0-2018-02-04_19-35-16-463.csv 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-TraceAbstractionBenchmarks-0-2018-02-04_19-35-16-463.csv Received shutdown request...