java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_2_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 09:25:42,278 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 09:25:42,279 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 09:25:42,292 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 09:25:42,292 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 09:25:42,293 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 09:25:42,294 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 09:25:42,296 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 09:25:42,298 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 09:25:42,299 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 09:25:42,300 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 09:25:42,300 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 09:25:42,301 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 09:25:42,302 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 09:25:42,303 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 09:25:42,305 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 09:25:42,306 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 09:25:42,308 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 09:25:42,309 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 09:25:42,310 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 09:25:42,312 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 09:25:42,317 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 09:25:42,317 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 09:25:42,318 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 09:25:42,329 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 09:25:42,329 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 09:25:42,330 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 09:25:42,331 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 09:25:42,331 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 09:25:42,331 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 09:25:42,331 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 09:25:42,331 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 09:25:42,332 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 09:25:42,332 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 09:25:42,332 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 09:25:42,332 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 09:25:42,332 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 09:25:42,332 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 09:25:42,333 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 09:25:42,333 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 09:25:42,333 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 09:25:42,333 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 09:25:42,333 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 09:25:42,333 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 09:25:42,334 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:25:42,334 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 09:25:42,334 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 09:25:42,334 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 09:25:42,334 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 09:25:42,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 09:25:42,384 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 09:25:42,388 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 09:25:42,390 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 09:25:42,390 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 09:25:42,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test22_2_false-valid-memtrack_true-termination.i [2018-02-02 09:25:42,553 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 09:25:42,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 09:25:42,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 09:25:42,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 09:25:42,561 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 09:25:42,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2b8cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42, skipping insertion in model container [2018-02-02 09:25:42,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,582 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:25:42,620 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:25:42,704 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:25:42,717 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:25:42,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42 WrapperNode [2018-02-02 09:25:42,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 09:25:42,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 09:25:42,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 09:25:42,725 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 09:25:42,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (1/1) ... [2018-02-02 09:25:42,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 09:25:42,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 09:25:42,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 09:25:42,748 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 09:25:42,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (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 09:25:42,780 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 09:25:42,781 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 09:25:42,781 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-02 09:25:42,781 INFO L136 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2018-02-02 09:25:42,781 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2018-02-02 09:25:42,781 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2018-02-02 09:25:42,781 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2018-02-02 09:25:42,781 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2018-02-02 09:25:42,781 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-02 09:25:42,782 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 09:25:42,782 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 09:25:42,782 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 09:25:42,782 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 09:25:42,782 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 09:25:42,782 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 09:25:42,782 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 09:25:42,783 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 09:25:42,783 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-02-02 09:25:42,783 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-02-02 09:25:42,783 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 09:25:42,783 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 09:25:42,783 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-02-02 09:25:42,783 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-02 09:25:42,783 INFO L128 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2018-02-02 09:25:42,783 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2018-02-02 09:25:42,784 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2018-02-02 09:25:42,784 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2018-02-02 09:25:42,784 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2018-02-02 09:25:42,784 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-02 09:25:42,784 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 09:25:42,784 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 09:25:42,784 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 09:25:42,898 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-02-02 09:25:42,968 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 09:25:42,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:25:42 BoogieIcfgContainer [2018-02-02 09:25:42,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 09:25:42,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 09:25:42,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 09:25:42,971 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 09:25:42,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:25:42" (1/3) ... [2018-02-02 09:25:42,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be47338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:25:42, skipping insertion in model container [2018-02-02 09:25:42,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:25:42" (2/3) ... [2018-02-02 09:25:42,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5be47338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:25:42, skipping insertion in model container [2018-02-02 09:25:42,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:25:42" (3/3) ... [2018-02-02 09:25:42,973 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2_false-valid-memtrack_true-termination.i [2018-02-02 09:25:42,978 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 09:25:42,983 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-02-02 09:25:43,013 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 09:25:43,013 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 09:25:43,014 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 09:25:43,014 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 09:25:43,014 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 09:25:43,014 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 09:25:43,014 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 09:25:43,014 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 09:25:43,015 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 09:25:43,026 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-02-02 09:25:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 09:25:43,034 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:43,035 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:43,035 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:43,039 INFO L82 PathProgramCache]: Analyzing trace with hash 13572496, now seen corresponding path program 1 times [2018-02-02 09:25:43,040 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:43,040 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:43,088 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,088 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:43,088 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:43,128 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:43,205 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:43,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:25:43,207 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:25:43,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:25:43,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:25:43,279 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 5 states. [2018-02-02 09:25:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:43,317 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-02-02 09:25:43,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:25:43,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-02-02 09:25:43,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:43,330 INFO L225 Difference]: With dead ends: 71 [2018-02-02 09:25:43,331 INFO L226 Difference]: Without dead ends: 68 [2018-02-02 09:25:43,332 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 09:25:43,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-02-02 09:25:43,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2018-02-02 09:25:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-02-02 09:25:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2018-02-02 09:25:43,356 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 17 [2018-02-02 09:25:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:43,356 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2018-02-02 09:25:43,356 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:25:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2018-02-02 09:25:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-02 09:25:43,356 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:43,357 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:43,357 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:43,357 INFO L82 PathProgramCache]: Analyzing trace with hash 64872882, now seen corresponding path program 1 times [2018-02-02 09:25:43,357 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:43,357 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:43,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,359 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:43,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:43,376 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:43,439 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 09:25:43,439 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:43,439 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:25:43,441 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:25:43,441 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:25:43,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:25:43,441 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2018-02-02 09:25:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:43,537 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-02-02 09:25:43,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:25:43,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-02-02 09:25:43,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:43,538 INFO L225 Difference]: With dead ends: 67 [2018-02-02 09:25:43,538 INFO L226 Difference]: Without dead ends: 67 [2018-02-02 09:25:43,539 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 09:25:43,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-02-02 09:25:43,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2018-02-02 09:25:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-02 09:25:43,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2018-02-02 09:25:43,545 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 19 [2018-02-02 09:25:43,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:43,545 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2018-02-02 09:25:43,545 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:25:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2018-02-02 09:25:43,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-02 09:25:43,546 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:43,546 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:43,546 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:43,546 INFO L82 PathProgramCache]: Analyzing trace with hash 64872883, now seen corresponding path program 1 times [2018-02-02 09:25:43,547 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:43,547 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:43,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,548 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:43,548 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:43,564 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:43,706 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 09:25:43,707 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:43,707 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 09:25:43,707 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 09:25:43,707 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 09:25:43,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:25:43,708 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 7 states. [2018-02-02 09:25:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:43,844 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2018-02-02 09:25:43,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 09:25:43,844 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-02-02 09:25:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:43,845 INFO L225 Difference]: With dead ends: 66 [2018-02-02 09:25:43,845 INFO L226 Difference]: Without dead ends: 66 [2018-02-02 09:25:43,846 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:25:43,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-02-02 09:25:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2018-02-02 09:25:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-02-02 09:25:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-02-02 09:25:43,852 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 19 [2018-02-02 09:25:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:43,852 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-02-02 09:25:43,853 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 09:25:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-02-02 09:25:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-02 09:25:43,853 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:43,853 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 09:25:43,854 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1610907055, now seen corresponding path program 1 times [2018-02-02 09:25:43,854 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:43,854 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:43,855 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,856 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:43,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:43,865 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:43,888 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 09:25:43,888 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:43,888 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:25:43,888 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:25:43,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:25:43,889 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:25:43,889 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 3 states. [2018-02-02 09:25:43,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:43,929 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2018-02-02 09:25:43,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:25:43,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-02-02 09:25:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:43,930 INFO L225 Difference]: With dead ends: 70 [2018-02-02 09:25:43,930 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 09:25:43,930 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 09:25:43,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 09:25:43,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-02-02 09:25:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 09:25:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2018-02-02 09:25:43,933 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 22 [2018-02-02 09:25:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:43,933 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2018-02-02 09:25:43,933 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:25:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2018-02-02 09:25:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 09:25:43,934 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:43,934 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 09:25:43,934 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:43,934 INFO L82 PathProgramCache]: Analyzing trace with hash -655458449, now seen corresponding path program 1 times [2018-02-02 09:25:43,934 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:43,934 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:43,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,935 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:43,935 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:43,941 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:43,980 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 09:25:43,980 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:43,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 09:25:43,981 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:25:43,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:25:43,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:25:43,981 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 6 states. [2018-02-02 09:25:43,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:43,998 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-02-02 09:25:43,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:25:43,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-02 09:25:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:43,999 INFO L225 Difference]: With dead ends: 60 [2018-02-02 09:25:43,999 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 09:25:44,000 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 09:25:44,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 09:25:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-02-02 09:25:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 09:25:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-02-02 09:25:44,004 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 24 [2018-02-02 09:25:44,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:44,005 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-02-02 09:25:44,005 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:25:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-02-02 09:25:44,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-02 09:25:44,006 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:44,006 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, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:44,006 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:44,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1673666846, now seen corresponding path program 1 times [2018-02-02 09:25:44,006 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:44,006 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:44,007 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:44,007 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:44,007 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:44,024 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:44,081 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 09:25:44,082 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:44,082 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-02 09:25:44,082 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 09:25:44,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 09:25:44,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:25:44,083 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 10 states. [2018-02-02 09:25:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:44,235 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-02-02 09:25:44,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:25:44,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-02-02 09:25:44,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:44,236 INFO L225 Difference]: With dead ends: 59 [2018-02-02 09:25:44,237 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 09:25:44,237 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-02-02 09:25:44,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 09:25:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-02 09:25:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-02 09:25:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-02-02 09:25:44,239 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 34 [2018-02-02 09:25:44,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:44,240 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-02-02 09:25:44,240 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 09:25:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-02-02 09:25:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-02 09:25:44,240 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:44,240 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, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:44,240 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:44,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1673666845, now seen corresponding path program 1 times [2018-02-02 09:25:44,241 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:44,241 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:44,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:44,241 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:44,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:44,249 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:44,287 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:44,287 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:25:44,288 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 09:25:44,288 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 09:25:44,288 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 09:25:44,288 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 4 states. [2018-02-02 09:25:44,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:44,305 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-02-02 09:25:44,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 09:25:44,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-02-02 09:25:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:44,306 INFO L225 Difference]: With dead ends: 62 [2018-02-02 09:25:44,306 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 09:25:44,306 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:25:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 09:25:44,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-02-02 09:25:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 09:25:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-02-02 09:25:44,310 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 34 [2018-02-02 09:25:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:44,310 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-02-02 09:25:44,310 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 09:25:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-02-02 09:25:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-02-02 09:25:44,311 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:44,311 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, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:44,311 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:44,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1908152085, now seen corresponding path program 1 times [2018-02-02 09:25:44,311 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:44,311 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:44,312 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:44,312 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:44,312 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:44,324 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:44,359 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:44,359 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:44,368 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:44,406 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:44,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:44,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-02-02 09:25:44,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:25:44,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:25:44,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:25:44,464 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 6 states. [2018-02-02 09:25:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:44,478 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-02-02 09:25:44,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:25:44,479 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2018-02-02 09:25:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:44,480 INFO L225 Difference]: With dead ends: 63 [2018-02-02 09:25:44,480 INFO L226 Difference]: Without dead ends: 61 [2018-02-02 09:25:44,480 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:25:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-02-02 09:25:44,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-02-02 09:25:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-02-02 09:25:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-02-02 09:25:44,484 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 35 [2018-02-02 09:25:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:44,484 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-02-02 09:25:44,484 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:25:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-02-02 09:25:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-02-02 09:25:44,485 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:44,485 INFO L351 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:44,485 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:44,486 INFO L82 PathProgramCache]: Analyzing trace with hash -587259933, now seen corresponding path program 2 times [2018-02-02 09:25:44,486 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:44,486 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:44,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:44,487 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:44,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:44,500 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:44,527 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:44,527 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:44,532 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:25:44,551 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:44,553 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:25:44,557 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:44,578 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 17 treesize of output 16 [2018-02-02 09:25:44,579 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 09:25:44,590 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 20 treesize of output 19 [2018-02-02 09:25:44,590 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 09:25:44,623 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-02-02 09:25:44,624 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:38, output treesize:36 [2018-02-02 09:25:46,882 WARN L143 SmtUtils]: Spent 2031ms on a formula simplification that was a NOOP. DAG size: 27 [2018-02-02 09:25:47,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-02 09:25:47,201 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:25:47,202 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 19 [2018-02-02 09:25:47,202 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-02-02 09:25:47,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-02-02 09:25:47,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2018-02-02 09:25:47,202 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 19 states. [2018-02-02 09:25:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:47,815 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-02-02 09:25:47,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-02-02 09:25:47,815 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-02-02 09:25:47,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:47,816 INFO L225 Difference]: With dead ends: 63 [2018-02-02 09:25:47,816 INFO L226 Difference]: Without dead ends: 61 [2018-02-02 09:25:47,816 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2018-02-02 09:25:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-02-02 09:25:47,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-02-02 09:25:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-02-02 09:25:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2018-02-02 09:25:47,820 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 36 [2018-02-02 09:25:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:47,821 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2018-02-02 09:25:47,821 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-02-02 09:25:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2018-02-02 09:25:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-02-02 09:25:47,822 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:47,822 INFO L351 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:47,822 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:47,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1225463170, now seen corresponding path program 1 times [2018-02-02 09:25:47,822 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:47,822 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:47,823 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:47,823 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:25:47,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:47,836 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-02-02 09:25:47,899 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:47,899 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-02 09:25:47,900 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 09:25:47,900 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 09:25:47,900 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:25:47,900 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 10 states. [2018-02-02 09:25:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:48,000 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2018-02-02 09:25:48,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:25:48,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-02-02 09:25:48,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:48,002 INFO L225 Difference]: With dead ends: 59 [2018-02-02 09:25:48,002 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 09:25:48,002 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-02-02 09:25:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 09:25:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-02 09:25:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-02 09:25:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-02-02 09:25:48,005 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 42 [2018-02-02 09:25:48,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:48,005 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-02-02 09:25:48,005 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 09:25:48,005 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-02-02 09:25:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-02-02 09:25:48,006 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:48,006 INFO L351 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:48,006 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:48,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1225463169, now seen corresponding path program 1 times [2018-02-02 09:25:48,007 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:48,007 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:48,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:48,008 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:48,008 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:48,020 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:48,045 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:48,045 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:48,050 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:48,072 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:48,101 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:48,101 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-02-02 09:25:48,102 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 09:25:48,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 09:25:48,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:25:48,102 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 8 states. [2018-02-02 09:25:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:48,119 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-02-02 09:25:48,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 09:25:48,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2018-02-02 09:25:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:48,121 INFO L225 Difference]: With dead ends: 62 [2018-02-02 09:25:48,121 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 09:25:48,121 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:25:48,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 09:25:48,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-02-02 09:25:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 09:25:48,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2018-02-02 09:25:48,124 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 42 [2018-02-02 09:25:48,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:48,125 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2018-02-02 09:25:48,125 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 09:25:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2018-02-02 09:25:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-02-02 09:25:48,126 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:48,126 INFO L351 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:48,126 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:48,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1854641017, now seen corresponding path program 2 times [2018-02-02 09:25:48,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:48,126 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:48,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:48,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:48,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:48,144 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:48,193 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:48,193 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:48,199 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:25:48,220 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:48,224 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:25:48,227 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:48,237 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 17 treesize of output 16 [2018-02-02 09:25:48,237 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 09:25:48,255 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 20 treesize of output 19 [2018-02-02 09:25:48,256 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 09:25:48,273 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-02-02 09:25:48,273 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:38, output treesize:36 [2018-02-02 09:25:50,199 WARN L146 SmtUtils]: Spent 1701ms on a formula simplification. DAG size of input: 45 DAG size of output 17 [2018-02-02 09:25:50,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-02-02 09:25:50,422 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 09:25:50,422 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [8] total 22 [2018-02-02 09:25:50,422 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-02-02 09:25:50,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-02-02 09:25:50,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2018-02-02 09:25:50,423 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 22 states. [2018-02-02 09:25:52,480 WARN L143 SmtUtils]: Spent 2027ms on a formula simplification that was a NOOP. DAG size: 39 [2018-02-02 09:25:54,635 WARN L143 SmtUtils]: Spent 2029ms on a formula simplification that was a NOOP. DAG size: 31 [2018-02-02 09:25:55,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:55,062 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2018-02-02 09:25:55,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-02-02 09:25:55,062 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 43 [2018-02-02 09:25:55,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:55,063 INFO L225 Difference]: With dead ends: 61 [2018-02-02 09:25:55,063 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 09:25:55,063 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2018-02-02 09:25:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 09:25:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-02 09:25:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-02 09:25:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-02-02 09:25:55,065 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 43 [2018-02-02 09:25:55,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:55,065 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-02-02 09:25:55,065 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-02-02 09:25:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-02-02 09:25:55,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-02-02 09:25:55,065 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:55,065 INFO L351 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:55,065 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:55,066 INFO L82 PathProgramCache]: Analyzing trace with hash -796850259, now seen corresponding path program 1 times [2018-02-02 09:25:55,066 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:55,066 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:55,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,066 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:25:55,066 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:55,072 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-02-02 09:25:55,105 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:55,105 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 09:25:55,105 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 09:25:55,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 09:25:55,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-02 09:25:55,106 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 8 states. [2018-02-02 09:25:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:55,129 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2018-02-02 09:25:55,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 09:25:55,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2018-02-02 09:25:55,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:55,130 INFO L225 Difference]: With dead ends: 61 [2018-02-02 09:25:55,130 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 09:25:55,130 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:25:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 09:25:55,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-02 09:25:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-02 09:25:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2018-02-02 09:25:55,133 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 42 [2018-02-02 09:25:55,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:55,133 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2018-02-02 09:25:55,133 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 09:25:55,133 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2018-02-02 09:25:55,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-02-02 09:25:55,134 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:55,134 INFO L351 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:25:55,134 INFO L371 AbstractCegarLoop]: === Iteration 14 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:55,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1073611946, now seen corresponding path program 1 times [2018-02-02 09:25:55,134 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:55,134 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:55,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,135 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:55,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:55,143 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-02-02 09:25:55,185 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:25:55,185 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-02-02 09:25:55,185 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 09:25:55,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 09:25:55,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:25:55,186 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 10 states. [2018-02-02 09:25:55,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:55,230 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-02-02 09:25:55,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:25:55,231 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-02-02 09:25:55,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:55,231 INFO L225 Difference]: With dead ends: 63 [2018-02-02 09:25:55,231 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 09:25:55,231 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-02-02 09:25:55,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 09:25:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-02-02 09:25:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-02-02 09:25:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-02-02 09:25:55,234 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2018-02-02 09:25:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:55,234 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-02-02 09:25:55,234 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 09:25:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-02-02 09:25:55,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-02-02 09:25:55,235 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:55,235 INFO L351 BasicCegarLoop]: trace histogram [5, 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, 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 09:25:55,235 INFO L371 AbstractCegarLoop]: === Iteration 15 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:55,235 INFO L82 PathProgramCache]: Analyzing trace with hash 348696970, now seen corresponding path program 1 times [2018-02-02 09:25:55,235 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:55,235 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:55,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,236 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:55,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:55,246 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:55,285 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:55,285 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:55,289 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:55,322 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:55,365 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:55,365 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-02-02 09:25:55,365 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 09:25:55,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 09:25:55,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:25:55,365 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 10 states. [2018-02-02 09:25:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:55,378 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-02-02 09:25:55,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 09:25:55,378 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2018-02-02 09:25:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:55,379 INFO L225 Difference]: With dead ends: 62 [2018-02-02 09:25:55,379 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 09:25:55,379 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-02-02 09:25:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 09:25:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-02-02 09:25:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 09:25:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-02-02 09:25:55,380 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-02-02 09:25:55,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:55,380 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-02-02 09:25:55,381 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 09:25:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-02-02 09:25:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-02-02 09:25:55,381 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:55,381 INFO L351 BasicCegarLoop]: trace histogram [6, 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, 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 09:25:55,381 INFO L371 AbstractCegarLoop]: === Iteration 16 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash -648862830, now seen corresponding path program 2 times [2018-02-02 09:25:55,381 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:55,382 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:55,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:55,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:55,392 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:55,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:55,432 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:55,432 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:55,440 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:25:55,456 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:55,462 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:55,463 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:25:55,465 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:55,488 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:55,489 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-02-02 09:25:55,489 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-02 09:25:55,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-02 09:25:55,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-02-02 09:25:55,489 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 11 states. [2018-02-02 09:25:55,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:55,503 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-02-02 09:25:55,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:25:55,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2018-02-02 09:25:55,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:55,504 INFO L225 Difference]: With dead ends: 63 [2018-02-02 09:25:55,504 INFO L226 Difference]: Without dead ends: 61 [2018-02-02 09:25:55,504 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:25:55,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-02-02 09:25:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-02-02 09:25:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-02-02 09:25:55,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-02-02 09:25:55,506 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-02-02 09:25:55,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:55,506 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-02-02 09:25:55,506 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-02 09:25:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-02-02 09:25:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-02-02 09:25:55,506 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:55,506 INFO L351 BasicCegarLoop]: trace histogram [7, 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, 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 09:25:55,506 INFO L371 AbstractCegarLoop]: === Iteration 17 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1508445558, now seen corresponding path program 3 times [2018-02-02 09:25:55,506 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:55,507 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:55,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,507 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:25:55,507 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:55,515 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:55,560 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:55,560 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:55,567 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 09:25:55,594 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:55,603 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:55,628 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:55,759 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:56,257 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:56,258 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:25:56,260 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:56,285 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:56,285 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-02-02 09:25:56,285 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 09:25:56,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 09:25:56,285 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2018-02-02 09:25:56,285 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 12 states. [2018-02-02 09:25:56,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:56,306 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-02-02 09:25:56,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 09:25:56,306 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2018-02-02 09:25:56,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:56,307 INFO L225 Difference]: With dead ends: 64 [2018-02-02 09:25:56,307 INFO L226 Difference]: Without dead ends: 62 [2018-02-02 09:25:56,307 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2018-02-02 09:25:56,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-02-02 09:25:56,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-02-02 09:25:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-02-02 09:25:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-02-02 09:25:56,309 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-02-02 09:25:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:56,309 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-02-02 09:25:56,309 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 09:25:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-02-02 09:25:56,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-02-02 09:25:56,310 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:56,310 INFO L351 BasicCegarLoop]: trace histogram [8, 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, 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 09:25:56,310 INFO L371 AbstractCegarLoop]: === Iteration 18 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:56,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1909260946, now seen corresponding path program 4 times [2018-02-02 09:25:56,310 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:56,310 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:56,311 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:56,311 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:25:56,311 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:56,324 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:56,399 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:56,399 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:56,399 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:56,407 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 09:25:56,444 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:25:56,447 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:56,462 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:56,493 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:56,493 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-02-02 09:25:56,494 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-02 09:25:56,494 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-02 09:25:56,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-02-02 09:25:56,495 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 13 states. [2018-02-02 09:25:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:56,523 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-02-02 09:25:56,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-02 09:25:56,523 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2018-02-02 09:25:56,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:56,524 INFO L225 Difference]: With dead ends: 65 [2018-02-02 09:25:56,524 INFO L226 Difference]: Without dead ends: 63 [2018-02-02 09:25:56,524 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=110, Unknown=0, NotChecked=0, Total=182 [2018-02-02 09:25:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-02-02 09:25:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-02-02 09:25:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-02-02 09:25:56,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-02-02 09:25:56,526 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-02-02 09:25:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:56,526 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-02-02 09:25:56,528 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-02 09:25:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-02-02 09:25:56,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-02-02 09:25:56,528 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:56,529 INFO L351 BasicCegarLoop]: trace histogram [9, 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, 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 09:25:56,529 INFO L371 AbstractCegarLoop]: === Iteration 19 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:56,529 INFO L82 PathProgramCache]: Analyzing trace with hash 483980170, now seen corresponding path program 5 times [2018-02-02 09:25:56,529 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:56,529 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:56,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:56,530 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:25:56,530 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:56,544 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:56,630 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:56,630 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:56,636 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 09:25:56,649 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:56,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:56,655 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:56,666 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:56,707 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:56,797 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:56,800 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:25:56,803 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:56,842 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:56,842 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-02-02 09:25:56,843 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-02 09:25:56,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-02 09:25:56,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2018-02-02 09:25:56,843 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 14 states. [2018-02-02 09:25:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:56,881 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-02-02 09:25:56,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-02 09:25:56,882 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2018-02-02 09:25:56,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:56,883 INFO L225 Difference]: With dead ends: 66 [2018-02-02 09:25:56,883 INFO L226 Difference]: Without dead ends: 64 [2018-02-02 09:25:56,883 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2018-02-02 09:25:56,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-02 09:25:56,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-02-02 09:25:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-02-02 09:25:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-02-02 09:25:56,885 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-02-02 09:25:56,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:56,886 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-02-02 09:25:56,886 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-02 09:25:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-02-02 09:25:56,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-02-02 09:25:56,887 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:56,887 INFO L351 BasicCegarLoop]: trace histogram [10, 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, 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 09:25:56,887 INFO L371 AbstractCegarLoop]: === Iteration 20 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:56,887 INFO L82 PathProgramCache]: Analyzing trace with hash -750050926, now seen corresponding path program 6 times [2018-02-02 09:25:56,887 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:56,887 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:56,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:56,888 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:25:56,888 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:56,902 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:56,991 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:56,991 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:56,996 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-02-02 09:25:57,011 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:25:57,019 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:25:57,036 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:25:57,102 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:25:57,353 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:25:57,699 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-02-02 09:25:57,700 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:25:57,702 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:57,735 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:57,735 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-02-02 09:25:57,735 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-02 09:25:57,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-02 09:25:57,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2018-02-02 09:25:57,735 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 15 states. [2018-02-02 09:25:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:57,755 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-02-02 09:25:57,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 09:25:57,755 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2018-02-02 09:25:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:57,756 INFO L225 Difference]: With dead ends: 67 [2018-02-02 09:25:57,756 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 09:25:57,756 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=97, Invalid=143, Unknown=0, NotChecked=0, Total=240 [2018-02-02 09:25:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 09:25:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-02-02 09:25:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-02 09:25:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-02-02 09:25:57,757 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-02-02 09:25:57,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:57,757 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-02-02 09:25:57,757 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-02 09:25:57,757 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-02-02 09:25:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-02-02 09:25:57,758 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:57,758 INFO L351 BasicCegarLoop]: trace histogram [11, 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, 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 09:25:57,758 INFO L371 AbstractCegarLoop]: === Iteration 21 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:57,758 INFO L82 PathProgramCache]: Analyzing trace with hash -350309238, now seen corresponding path program 7 times [2018-02-02 09:25:57,758 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:57,758 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:57,759 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:57,759 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:25:57,759 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:57,767 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:57,892 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:57,892 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:57,896 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:57,928 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:57,962 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:57,962 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-02-02 09:25:57,962 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-02-02 09:25:57,963 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-02-02 09:25:57,963 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2018-02-02 09:25:57,963 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 16 states. [2018-02-02 09:25:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:57,986 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-02-02 09:25:57,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-02-02 09:25:57,987 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2018-02-02 09:25:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:57,987 INFO L225 Difference]: With dead ends: 68 [2018-02-02 09:25:57,987 INFO L226 Difference]: Without dead ends: 66 [2018-02-02 09:25:57,987 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=161, Unknown=0, NotChecked=0, Total=272 [2018-02-02 09:25:57,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-02-02 09:25:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-02-02 09:25:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-02-02 09:25:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-02-02 09:25:57,989 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-02-02 09:25:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:57,989 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-02-02 09:25:57,989 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-02-02 09:25:57,989 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-02-02 09:25:57,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-02-02 09:25:57,990 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:57,990 INFO L351 BasicCegarLoop]: trace histogram [12, 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, 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 09:25:57,990 INFO L371 AbstractCegarLoop]: === Iteration 22 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash -843218798, now seen corresponding path program 8 times [2018-02-02 09:25:57,990 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:57,990 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:57,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:57,991 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:25:57,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:58,001 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:58,097 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:58,097 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:58,097 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:58,102 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 09:25:58,121 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:58,130 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:25:58,132 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:25:58,134 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:25:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:58,179 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:25:58,179 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-02-02 09:25:58,180 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-02-02 09:25:58,180 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-02-02 09:25:58,180 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2018-02-02 09:25:58,180 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 17 states. [2018-02-02 09:25:58,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:25:58,209 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-02-02 09:25:58,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-02 09:25:58,210 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2018-02-02 09:25:58,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:25:58,210 INFO L225 Difference]: With dead ends: 69 [2018-02-02 09:25:58,210 INFO L226 Difference]: Without dead ends: 67 [2018-02-02 09:25:58,210 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=126, Invalid=180, Unknown=0, NotChecked=0, Total=306 [2018-02-02 09:25:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-02-02 09:25:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-02-02 09:25:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-02-02 09:25:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-02-02 09:25:58,212 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-02-02 09:25:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:25:58,213 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-02-02 09:25:58,213 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-02-02 09:25:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-02-02 09:25:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-02-02 09:25:58,213 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:25:58,213 INFO L351 BasicCegarLoop]: trace histogram [13, 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, 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 09:25:58,213 INFO L371 AbstractCegarLoop]: === Iteration 23 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:25:58,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1056454026, now seen corresponding path program 9 times [2018-02-02 09:25:58,214 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:25:58,214 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:25:58,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:58,215 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:25:58,215 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:25:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:25:58,228 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:25:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:25:58,387 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:25:58,388 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:25:58,395 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-02-02 09:25:58,421 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:58,429 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:58,456 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:58,691 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:58,901 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:59,613 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:25:59,984 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:26:00,366 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-02-02 09:26:00,368 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:26:00,371 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:26:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:26:00,580 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:26:00,580 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22] total 37 [2018-02-02 09:26:00,581 INFO L409 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-02-02 09:26:00,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-02-02 09:26:00,581 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=959, Unknown=0, NotChecked=0, Total=1332 [2018-02-02 09:26:00,581 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 37 states. [2018-02-02 09:26:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:26:00,682 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-02-02 09:26:00,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-02-02 09:26:00,682 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 66 [2018-02-02 09:26:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:26:00,682 INFO L225 Difference]: With dead ends: 70 [2018-02-02 09:26:00,682 INFO L226 Difference]: Without dead ends: 68 [2018-02-02 09:26:00,683 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=415, Invalid=1145, Unknown=0, NotChecked=0, Total=1560 [2018-02-02 09:26:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-02-02 09:26:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-02-02 09:26:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-02-02 09:26:00,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-02-02 09:26:00,685 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-02-02 09:26:00,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:26:00,685 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-02-02 09:26:00,685 INFO L433 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-02-02 09:26:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-02-02 09:26:00,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-02-02 09:26:00,685 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:26:00,685 INFO L351 BasicCegarLoop]: trace histogram [14, 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, 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 09:26:00,685 INFO L371 AbstractCegarLoop]: === Iteration 24 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:26:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash -183230574, now seen corresponding path program 10 times [2018-02-02 09:26:00,686 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:26:00,686 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:26:00,686 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:26:00,686 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:26:00,686 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:26:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:26:00,700 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:26:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:26:00,836 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:26:00,836 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:26:00,843 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-02-02 09:26:00,884 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:26:00,886 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:26:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:26:00,916 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:26:00,916 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2018-02-02 09:26:00,916 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-02-02 09:26:00,916 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-02-02 09:26:00,917 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2018-02-02 09:26:00,917 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 19 states. [2018-02-02 09:26:00,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:26:00,951 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-02-02 09:26:00,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 09:26:00,951 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 67 [2018-02-02 09:26:00,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:26:00,951 INFO L225 Difference]: With dead ends: 71 [2018-02-02 09:26:00,951 INFO L226 Difference]: Without dead ends: 69 [2018-02-02 09:26:00,952 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=159, Invalid=221, Unknown=0, NotChecked=0, Total=380 [2018-02-02 09:26:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-02-02 09:26:00,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-02-02 09:26:00,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-02-02 09:26:00,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-02-02 09:26:00,953 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-02-02 09:26:00,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:26:00,953 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-02-02 09:26:00,953 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-02-02 09:26:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-02-02 09:26:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-02-02 09:26:00,953 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:26:00,953 INFO L351 BasicCegarLoop]: trace histogram [15, 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, 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 09:26:00,953 INFO L371 AbstractCegarLoop]: === Iteration 25 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:26:00,954 INFO L82 PathProgramCache]: Analyzing trace with hash 41252490, now seen corresponding path program 11 times [2018-02-02 09:26:00,954 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:26:00,954 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:26:00,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:26:00,954 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:26:00,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:26:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:26:00,962 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:26:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:26:01,084 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 09:26:01,084 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 09:26:01,089 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-02-02 09:26:01,096 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:01,097 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:01,100 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:01,109 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:01,130 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:01,151 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:01,346 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:01,719 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:02,034 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-02-02 09:26:02,039 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 09:26:02,043 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 09:26:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 09:26:02,073 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 09:26:02,073 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2018-02-02 09:26:02,073 INFO L409 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-02-02 09:26:02,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-02-02 09:26:02,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2018-02-02 09:26:02,074 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 20 states. [2018-02-02 09:26:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:26:02,106 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-02-02 09:26:02,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-02-02 09:26:02,106 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2018-02-02 09:26:02,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:26:02,106 INFO L225 Difference]: With dead ends: 72 [2018-02-02 09:26:02,106 INFO L226 Difference]: Without dead ends: 70 [2018-02-02 09:26:02,107 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=177, Invalid=243, Unknown=0, NotChecked=0, Total=420 [2018-02-02 09:26:02,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-02-02 09:26:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-02-02 09:26:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-02-02 09:26:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-02-02 09:26:02,108 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-02-02 09:26:02,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:26:02,108 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-02-02 09:26:02,108 INFO L433 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-02-02 09:26:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-02-02 09:26:02,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-02-02 09:26:02,109 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:26:02,109 INFO L351 BasicCegarLoop]: trace histogram [16, 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, 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 09:26:02,109 INFO L371 AbstractCegarLoop]: === Iteration 26 === [ldv_kref_initErr0RequiresViolation, ldv_kref_initErr1RequiresViolation, ldv_kobject_createErr0RequiresViolation, ldv_kobject_createErr1RequiresViolation, mainErr0EnsuresViolation, LDV_INIT_LIST_HEADErr1RequiresViolation, LDV_INIT_LIST_HEADErr3RequiresViolation, LDV_INIT_LIST_HEADErr2RequiresViolation, LDV_INIT_LIST_HEADErr0RequiresViolation]=== [2018-02-02 09:26:02,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1589707118, now seen corresponding path program 12 times [2018-02-02 09:26:02,109 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:26:02,109 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:26:02,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:26:02,109 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 09:26:02,110 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:26:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 09:26:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 09:26:02,178 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 09:26:02,192 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2018-02-02 09:26:02,195 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 09:26:02,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:26:02 BoogieIcfgContainer [2018-02-02 09:26:02,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 09:26:02,207 INFO L168 Benchmark]: Toolchain (without parser) took 19653.18 ms. Allocated memory was 398.5 MB in the beginning and 727.7 MB in the end (delta: 329.3 MB). Free memory was 352.5 MB in the beginning and 617.2 MB in the end (delta: -264.7 MB). Peak memory consumption was 64.6 MB. Max. memory is 5.3 GB. [2018-02-02 09:26:02,208 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 398.5 MB. Free memory is still 359.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:26:02,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.07 ms. Allocated memory is still 398.5 MB. Free memory was 352.5 MB in the beginning and 339.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-02 09:26:02,208 INFO L168 Benchmark]: Boogie Preprocessor took 23.12 ms. Allocated memory is still 398.5 MB. Free memory was 339.3 MB in the beginning and 338.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 09:26:02,208 INFO L168 Benchmark]: RCFGBuilder took 220.51 ms. Allocated memory is still 398.5 MB. Free memory was 338.0 MB in the beginning and 314.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 5.3 GB. [2018-02-02 09:26:02,209 INFO L168 Benchmark]: TraceAbstraction took 19237.32 ms. Allocated memory was 398.5 MB in the beginning and 727.7 MB in the end (delta: 329.3 MB). Free memory was 314.1 MB in the beginning and 617.2 MB in the end (delta: -303.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 5.3 GB. [2018-02-02 09:26:02,210 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 398.5 MB. Free memory is still 359.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 169.07 ms. Allocated memory is still 398.5 MB. Free memory was 352.5 MB in the beginning and 339.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.12 ms. Allocated memory is still 398.5 MB. Free memory was 339.3 MB in the beginning and 338.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 220.51 ms. Allocated memory is still 398.5 MB. Free memory was 338.0 MB in the beginning and 314.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 19237.32 ms. Allocated memory was 398.5 MB in the beginning and 727.7 MB in the end (delta: 329.3 MB). Free memory was 314.1 MB in the beginning and 617.2 MB in the end (delta: -303.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1441]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1441. Possible FailurePath: [L1442] CALL entry_point() [L1436] struct ldv_kobject *kobj; [L1437] CALL, EXPR ldv_kobject_create() [L1406] struct ldv_kobject *kobj; [L1408] CALL, EXPR ldv_malloc(sizeof(*kobj)) VAL [\old(size)=16] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=16, malloc(size)={19:0}, size=16] [L1074] RET return malloc(size); VAL [\old(size)=16, \result={19:0}, malloc(size)={19:0}, size=16] [L1408] EXPR ldv_malloc(sizeof(*kobj)) VAL [ldv_malloc(sizeof(*kobj))={19:0}] [L1408] kobj = ldv_malloc(sizeof(*kobj)) [L1409] COND FALSE !(!kobj) VAL [kobj={19:0}] [L1411] FCALL memset(kobj, 0, sizeof(*kobj)) VAL [kobj={19:0}, memset(kobj, 0, sizeof(*kobj))={19:0}] [L1413] CALL ldv_kobject_init(kobj) VAL [kobj={19:0}] [L1394] COND FALSE !(!kobj) VAL [kobj={19:0}, kobj={19:0}] [L1398] CALL ldv_kobject_init_internal(kobj) VAL [kobj={19:0}] [L1380] COND FALSE !(!kobj) VAL [kobj={19:0}, kobj={19:0}] [L1382] CALL ldv_kref_init(&kobj->kref) VAL [kref={19:12}] [L1294] RET, FCALL ((&kref->refcount)->counter) = (1) VAL [kref={19:12}, kref={19:12}] [L1382] ldv_kref_init(&kobj->kref) VAL [kobj={19:0}, kobj={19:0}] [L1383] CALL LDV_INIT_LIST_HEAD(&kobj->entry) VAL [list={19:4}] [L1099] FCALL list->next = list VAL [list={19:4}, list={19:4}] [L1100] FCALL list->prev = list VAL [list={19:4}, list={19:4}] [L1383] RET, FCALL LDV_INIT_LIST_HEAD(&kobj->entry) VAL [kobj={19:0}, kobj={19:0}] [L1413] ldv_kobject_init(kobj) VAL [kobj={19:0}] [L1414] RET return kobj; VAL [\result={19:0}, kobj={19:0}] [L1437] EXPR ldv_kobject_create() VAL [ldv_kobject_create()={19:0}] [L1437] RET kobj = ldv_kobject_create() [L1442] entry_point() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 65 locations, 9 error locations. UNSAFE Result, 19.1s OverallTime, 26 OverallIterations, 16 TraceHistogramMax, 6.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1289 SDtfs, 263 SDslu, 9962 SDs, 0 SdLazy, 2292 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1134 GetRequests, 826 SyntacticMatches, 1 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=25, 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, 25 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 2067 NumberOfCodeBlocks, 2061 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 1958 ConstructedInterpolants, 53 QuantifiedInterpolants, 225017 SizeOfPredicates, 34 NumberOfNonLiveVariables, 3798 ConjunctsInSsa, 262 ConjunctsInUnsatCore, 40 InterpolantComputations, 12 PerfectInterpolantSequences, 49/1396 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test22_2_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-26-02-215.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test22_2_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_09-26-02-215.csv Received shutdown request...