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/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test7_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:28:23,805 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:28:23,807 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:28:23,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:28:23,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:28:23,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:28:23,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:28:23,825 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:28:23,827 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:28:23,828 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:28:23,829 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:28:23,829 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:28:23,830 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:28:23,831 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:28:23,832 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:28:23,835 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:28:23,837 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:28:23,840 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:28:23,841 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:28:23,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:28:23,845 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 17:28:23,851 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:28:23,851 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:28:23,852 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-24 17:28:23,860 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:28:23,861 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:28:23,861 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:28:23,862 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:28:23,862 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:28:23,862 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:28:23,862 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:28:23,862 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:28:23,863 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:28:23,863 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:28:23,863 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:28:23,863 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:28:23,863 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:28:23,863 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:28:23,863 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:28:23,864 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:28:23,864 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:28:23,864 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:28:23,864 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:28:23,864 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:28:23,864 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:28:23,864 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:28:23,865 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:28:23,865 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:28:23,865 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:28:23,865 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:28:23,865 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:28:23,866 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:28:23,866 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:28:23,866 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:28:23,866 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:28:23,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:28:23,866 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:28:23,866 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:28:23,867 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:28:23,867 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:28:23,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:28:23,913 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:28:23,916 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:28:23,917 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:28:23,918 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:28:23,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test7_true-valid-memsafety_true-termination.i [2018-01-24 17:28:24,104 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:28:24,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:28:24,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:28:24,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:28:24,115 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:28:24,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105626bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24, skipping insertion in model container [2018-01-24 17:28:24,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,134 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:28:24,183 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:28:24,308 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:28:24,330 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:28:24,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24 WrapperNode [2018-01-24 17:28:24,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:28:24,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:28:24,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:28:24,342 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:28:24,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (1/1) ... [2018-01-24 17:28:24,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:28:24,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:28:24,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:28:24,380 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:28:24,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (1/1) ... No working directory specified, using /storage/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 [2018-01-24 17:28:24,430 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:28:24,430 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:28:24,430 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 17:28:24,430 INFO L136 BoogieDeclarations]: Found implementation of procedure f6 [2018-01-24 17:28:24,430 INFO L136 BoogieDeclarations]: Found implementation of procedure g6 [2018-01-24 17:28:24,431 INFO L136 BoogieDeclarations]: Found implementation of procedure probe1_6 [2018-01-24 17:28:24,431 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2018-01-24 17:28:24,431 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 17:28:24,431 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:28:24,431 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 17:28:24,431 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 17:28:24,431 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:28:24,431 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:28:24,431 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:28:24,431 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 17:28:24,432 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 17:28:24,432 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 17:28:24,432 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 17:28:24,432 INFO L128 BoogieDeclarations]: Found specification of procedure f6 [2018-01-24 17:28:24,432 INFO L128 BoogieDeclarations]: Found specification of procedure g6 [2018-01-24 17:28:24,432 INFO L128 BoogieDeclarations]: Found specification of procedure probe1_6 [2018-01-24 17:28:24,432 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_6 [2018-01-24 17:28:24,433 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 17:28:24,433 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:28:24,433 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:28:24,433 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:28:24,652 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:28:24,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:28:24 BoogieIcfgContainer [2018-01-24 17:28:24,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:28:24,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:28:24,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:28:24,657 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:28:24,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:28:24" (1/3) ... [2018-01-24 17:28:24,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ffcb38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:28:24, skipping insertion in model container [2018-01-24 17:28:24,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:28:24" (2/3) ... [2018-01-24 17:28:24,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ffcb38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:28:24, skipping insertion in model container [2018-01-24 17:28:24,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:28:24" (3/3) ... [2018-01-24 17:28:24,661 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test7_true-valid-memsafety_true-termination.i [2018-01-24 17:28:24,668 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:28:24,674 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-01-24 17:28:24,714 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:28:24,714 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:28:24,714 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:28:24,715 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:28:24,715 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:28:24,715 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:28:24,715 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:28:24,715 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:28:24,716 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:28:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-24 17:28:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 17:28:24,743 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:24,744 INFO L322 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] [2018-01-24 17:28:24,744 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:24,749 INFO L82 PathProgramCache]: Analyzing trace with hash -554404132, now seen corresponding path program 1 times [2018-01-24 17:28:24,751 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:24,802 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:24,802 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:24,802 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:24,802 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:24,869 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:25,072 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:25,072 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:28:25,072 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:25,074 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:28:25,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:28:25,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:28:25,152 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 5 states. [2018-01-24 17:28:25,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:25,204 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2018-01-24 17:28:25,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:28:25,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 17:28:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:25,220 INFO L225 Difference]: With dead ends: 112 [2018-01-24 17:28:25,220 INFO L226 Difference]: Without dead ends: 65 [2018-01-24 17:28:25,224 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:28:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-24 17:28:25,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2018-01-24 17:28:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-24 17:28:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2018-01-24 17:28:25,266 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 23 [2018-01-24 17:28:25,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:25,266 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2018-01-24 17:28:25,266 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:28:25,267 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2018-01-24 17:28:25,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 17:28:25,268 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:25,268 INFO L322 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] [2018-01-24 17:28:25,268 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:25,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1190293187, now seen corresponding path program 1 times [2018-01-24 17:28:25,269 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:25,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:25,271 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:25,271 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:25,272 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:25,294 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:25,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:25,391 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:25,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:28:25,391 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:25,393 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:28:25,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:28:25,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:28:25,393 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 6 states. [2018-01-24 17:28:25,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:25,594 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2018-01-24 17:28:25,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 17:28:25,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-01-24 17:28:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:25,598 INFO L225 Difference]: With dead ends: 76 [2018-01-24 17:28:25,598 INFO L226 Difference]: Without dead ends: 75 [2018-01-24 17:28:25,599 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-24 17:28:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-24 17:28:25,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2018-01-24 17:28:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-24 17:28:25,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2018-01-24 17:28:25,612 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 23 [2018-01-24 17:28:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:25,613 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2018-01-24 17:28:25,613 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:28:25,613 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2018-01-24 17:28:25,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 17:28:25,614 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:25,614 INFO L322 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] [2018-01-24 17:28:25,614 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:25,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1190293188, now seen corresponding path program 1 times [2018-01-24 17:28:25,615 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:25,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:25,616 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:25,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:25,617 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:25,634 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:25,702 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:25,702 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 17:28:25,703 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:25,703 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:28:25,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:28:25,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:28:25,703 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 6 states. [2018-01-24 17:28:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:25,753 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-24 17:28:25,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:28:25,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-01-24 17:28:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:25,755 INFO L225 Difference]: With dead ends: 95 [2018-01-24 17:28:25,755 INFO L226 Difference]: Without dead ends: 75 [2018-01-24 17:28:25,756 INFO L525 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 [2018-01-24 17:28:25,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-24 17:28:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2018-01-24 17:28:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-24 17:28:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-01-24 17:28:25,765 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 23 [2018-01-24 17:28:25,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:25,766 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-01-24 17:28:25,766 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:28:25,766 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-01-24 17:28:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 17:28:25,767 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:25,767 INFO L322 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] [2018-01-24 17:28:25,767 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:25,768 INFO L82 PathProgramCache]: Analyzing trace with hash 787364094, now seen corresponding path program 1 times [2018-01-24 17:28:25,768 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:25,769 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:25,769 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:25,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:25,770 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:25,790 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:25,857 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:25,857 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:28:25,857 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:25,857 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:28:25,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:28:25,858 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:28:25,858 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 6 states. [2018-01-24 17:28:25,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:25,885 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-01-24 17:28:25,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 17:28:25,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-24 17:28:25,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:25,887 INFO L225 Difference]: With dead ends: 67 [2018-01-24 17:28:25,887 INFO L226 Difference]: Without dead ends: 66 [2018-01-24 17:28:25,887 INFO L525 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 [2018-01-24 17:28:25,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-24 17:28:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-24 17:28:25,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-24 17:28:25,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2018-01-24 17:28:25,896 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 25 [2018-01-24 17:28:25,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:25,896 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2018-01-24 17:28:25,896 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:28:25,896 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2018-01-24 17:28:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 17:28:25,897 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:25,897 INFO L322 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] [2018-01-24 17:28:25,898 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:25,898 INFO L82 PathProgramCache]: Analyzing trace with hash 787364095, now seen corresponding path program 1 times [2018-01-24 17:28:25,898 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:25,899 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:25,900 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:25,900 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:25,900 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:25,917 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:25,996 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:25,996 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:28:25,996 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:25,997 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:28:25,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:28:25,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:28:25,997 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2018-01-24 17:28:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:26,097 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2018-01-24 17:28:26,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:28:26,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-24 17:28:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:26,099 INFO L225 Difference]: With dead ends: 70 [2018-01-24 17:28:26,100 INFO L226 Difference]: Without dead ends: 69 [2018-01-24 17:28:26,100 INFO L525 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 [2018-01-24 17:28:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-01-24 17:28:26,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2018-01-24 17:28:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-24 17:28:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2018-01-24 17:28:26,108 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 25 [2018-01-24 17:28:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:26,109 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2018-01-24 17:28:26,109 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:28:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2018-01-24 17:28:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 17:28:26,110 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:26,110 INFO L322 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] [2018-01-24 17:28:26,110 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:26,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1459091407, now seen corresponding path program 1 times [2018-01-24 17:28:26,110 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:26,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:26,111 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:26,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:26,112 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:26,126 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:26,201 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:26,202 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 17:28:26,202 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:26,202 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 17:28:26,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 17:28:26,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 17:28:26,203 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 4 states. [2018-01-24 17:28:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:26,330 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2018-01-24 17:28:26,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:28:26,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-24 17:28:26,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:26,332 INFO L225 Difference]: With dead ends: 75 [2018-01-24 17:28:26,333 INFO L226 Difference]: Without dead ends: 61 [2018-01-24 17:28:26,333 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:28:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-24 17:28:26,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-01-24 17:28:26,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-01-24 17:28:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2018-01-24 17:28:26,342 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 25 [2018-01-24 17:28:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:26,342 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2018-01-24 17:28:26,342 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 17:28:26,343 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2018-01-24 17:28:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-24 17:28:26,344 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:26,344 INFO L322 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] [2018-01-24 17:28:26,344 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:26,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1886799503, now seen corresponding path program 1 times [2018-01-24 17:28:26,345 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:26,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:26,346 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:26,346 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:26,347 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:26,359 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:26,410 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:26,410 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 17:28:26,410 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:26,410 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:28:26,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:28:26,411 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:28:26,411 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 6 states. [2018-01-24 17:28:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:26,436 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-01-24 17:28:26,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:28:26,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-01-24 17:28:26,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:26,437 INFO L225 Difference]: With dead ends: 67 [2018-01-24 17:28:26,437 INFO L226 Difference]: Without dead ends: 57 [2018-01-24 17:28:26,438 INFO L525 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 [2018-01-24 17:28:26,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-24 17:28:26,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-01-24 17:28:26,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-24 17:28:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-01-24 17:28:26,444 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 27 [2018-01-24 17:28:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:26,445 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-01-24 17:28:26,445 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:28:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-01-24 17:28:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 17:28:26,446 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:26,446 INFO L322 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] [2018-01-24 17:28:26,446 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:26,447 INFO L82 PathProgramCache]: Analyzing trace with hash 725932211, now seen corresponding path program 1 times [2018-01-24 17:28:26,447 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:26,448 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:26,448 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:26,448 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:26,448 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:26,462 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:26,650 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:26,650 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 17:28:26,651 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:26,651 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 17:28:26,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 17:28:26,651 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 17:28:26,652 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 8 states. [2018-01-24 17:28:26,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:26,879 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2018-01-24 17:28:26,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 17:28:26,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-01-24 17:28:26,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:26,881 INFO L225 Difference]: With dead ends: 63 [2018-01-24 17:28:26,881 INFO L226 Difference]: Without dead ends: 62 [2018-01-24 17:28:26,881 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-01-24 17:28:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-24 17:28:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2018-01-24 17:28:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-24 17:28:26,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-01-24 17:28:26,891 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 31 [2018-01-24 17:28:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:26,892 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-01-24 17:28:26,892 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 17:28:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-01-24 17:28:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 17:28:26,892 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:26,893 INFO L322 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] [2018-01-24 17:28:26,893 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:26,893 INFO L82 PathProgramCache]: Analyzing trace with hash 725932212, now seen corresponding path program 1 times [2018-01-24 17:28:26,893 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:26,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:26,894 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:26,895 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:26,895 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:26,909 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:27,059 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:27,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 17:28:27,059 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:27,060 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 17:28:27,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 17:28:27,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-24 17:28:27,060 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 9 states. [2018-01-24 17:28:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:27,309 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2018-01-24 17:28:27,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 17:28:27,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-01-24 17:28:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:27,311 INFO L225 Difference]: With dead ends: 58 [2018-01-24 17:28:27,311 INFO L226 Difference]: Without dead ends: 57 [2018-01-24 17:28:27,311 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-01-24 17:28:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-24 17:28:27,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2018-01-24 17:28:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-24 17:28:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2018-01-24 17:28:27,320 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2018-01-24 17:28:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:27,320 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2018-01-24 17:28:27,320 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 17:28:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2018-01-24 17:28:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 17:28:27,322 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:27,322 INFO L322 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] [2018-01-24 17:28:27,322 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:27,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2094593310, now seen corresponding path program 1 times [2018-01-24 17:28:27,323 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:27,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:27,324 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:27,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:27,324 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:27,338 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:27,391 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:27,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 17:28:27,392 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:27,392 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:28:27,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:28:27,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:28:27,393 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 6 states. [2018-01-24 17:28:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:27,445 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-01-24 17:28:27,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:28:27,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-01-24 17:28:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:27,447 INFO L225 Difference]: With dead ends: 80 [2018-01-24 17:28:27,447 INFO L226 Difference]: Without dead ends: 63 [2018-01-24 17:28:27,448 INFO L525 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 [2018-01-24 17:28:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-01-24 17:28:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-01-24 17:28:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-01-24 17:28:27,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2018-01-24 17:28:27,455 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 33 [2018-01-24 17:28:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:27,456 INFO L432 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2018-01-24 17:28:27,456 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:28:27,456 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2018-01-24 17:28:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-24 17:28:27,457 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:27,457 INFO L322 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] [2018-01-24 17:28:27,457 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:27,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1386851478, now seen corresponding path program 1 times [2018-01-24 17:28:27,457 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:27,465 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:27,466 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:27,466 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:27,466 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:27,479 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:27,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:27,777 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:27,777 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 17:28:27,777 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:27,777 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 17:28:27,778 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 17:28:27,778 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-01-24 17:28:27,778 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand 9 states. [2018-01-24 17:28:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:28,004 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2018-01-24 17:28:28,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 17:28:28,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-01-24 17:28:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:28,005 INFO L225 Difference]: With dead ends: 65 [2018-01-24 17:28:28,005 INFO L226 Difference]: Without dead ends: 53 [2018-01-24 17:28:28,005 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-01-24 17:28:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-01-24 17:28:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-01-24 17:28:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-01-24 17:28:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-01-24 17:28:28,012 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 35 [2018-01-24 17:28:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:28,012 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-01-24 17:28:28,013 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 17:28:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-01-24 17:28:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-24 17:28:28,013 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:28,014 INFO L322 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, 1, 1, 1, 1] [2018-01-24 17:28:28,014 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:28,014 INFO L82 PathProgramCache]: Analyzing trace with hash 2029935703, now seen corresponding path program 1 times [2018-01-24 17:28:28,014 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:28,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:28,015 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:28,015 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:28,016 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:28,025 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:28,132 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:28,132 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 17:28:28,132 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:28,132 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 17:28:28,132 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 17:28:28,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-24 17:28:28,133 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 7 states. [2018-01-24 17:28:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:28,211 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-01-24 17:28:28,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 17:28:28,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2018-01-24 17:28:28,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:28,213 INFO L225 Difference]: With dead ends: 54 [2018-01-24 17:28:28,213 INFO L226 Difference]: Without dead ends: 53 [2018-01-24 17:28:28,213 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-24 17:28:28,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-01-24 17:28:28,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2018-01-24 17:28:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-24 17:28:28,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-01-24 17:28:28,220 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 39 [2018-01-24 17:28:28,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:28,221 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-01-24 17:28:28,221 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 17:28:28,221 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-01-24 17:28:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-24 17:28:28,222 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:28,222 INFO L322 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, 1, 1, 1, 1] [2018-01-24 17:28:28,222 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:28,222 INFO L82 PathProgramCache]: Analyzing trace with hash 2029935704, now seen corresponding path program 1 times [2018-01-24 17:28:28,223 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:28,224 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:28,224 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:28,224 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:28,224 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:28,236 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:28,381 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:28,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 17:28:28,381 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:28,381 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 17:28:28,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 17:28:28,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-24 17:28:28,382 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 8 states. [2018-01-24 17:28:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:28,477 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-01-24 17:28:28,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 17:28:28,477 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2018-01-24 17:28:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:28,478 INFO L225 Difference]: With dead ends: 52 [2018-01-24 17:28:28,478 INFO L226 Difference]: Without dead ends: 51 [2018-01-24 17:28:28,478 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-24 17:28:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-01-24 17:28:28,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-01-24 17:28:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-24 17:28:28,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-01-24 17:28:28,484 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 39 [2018-01-24 17:28:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:28,485 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-01-24 17:28:28,485 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 17:28:28,485 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-01-24 17:28:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-24 17:28:28,485 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:28,486 INFO L322 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, 1, 1, 1, 1, 1] [2018-01-24 17:28:28,486 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:28,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1496502653, now seen corresponding path program 1 times [2018-01-24 17:28:28,486 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:28,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:28,487 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:28,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:28,487 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:28,500 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:28,625 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:28,625 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 17:28:28,625 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:28,626 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 17:28:28,626 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 17:28:28,626 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-01-24 17:28:28,626 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 12 states. [2018-01-24 17:28:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:28,710 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-01-24 17:28:28,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 17:28:28,711 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2018-01-24 17:28:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:28,711 INFO L225 Difference]: With dead ends: 51 [2018-01-24 17:28:28,711 INFO L226 Difference]: Without dead ends: 50 [2018-01-24 17:28:28,712 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2018-01-24 17:28:28,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-01-24 17:28:28,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-01-24 17:28:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-01-24 17:28:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-01-24 17:28:28,718 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 40 [2018-01-24 17:28:28,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:28,719 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-01-24 17:28:28,719 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 17:28:28,719 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-01-24 17:28:28,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-24 17:28:28,719 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:28,719 INFO L322 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, 1, 1, 1, 1, 1] [2018-01-24 17:28:28,719 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:28,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1496502652, now seen corresponding path program 1 times [2018-01-24 17:28:28,720 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:28,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:28,721 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:28,721 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:28,721 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:28,730 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:28,895 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:28,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 17:28:28,896 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:28,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 17:28:28,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 17:28:28,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-01-24 17:28:28,897 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 12 states. [2018-01-24 17:28:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:29,031 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-01-24 17:28:29,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 17:28:29,032 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2018-01-24 17:28:29,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:29,032 INFO L225 Difference]: With dead ends: 51 [2018-01-24 17:28:29,032 INFO L226 Difference]: Without dead ends: 50 [2018-01-24 17:28:29,033 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2018-01-24 17:28:29,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-01-24 17:28:29,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-01-24 17:28:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-24 17:28:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-01-24 17:28:29,040 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 40 [2018-01-24 17:28:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:29,040 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-01-24 17:28:29,040 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 17:28:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-01-24 17:28:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 17:28:29,041 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:29,041 INFO L322 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, 1, 1, 1, 1, 1, 1] [2018-01-24 17:28:29,041 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash 901697635, now seen corresponding path program 1 times [2018-01-24 17:28:29,041 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:29,042 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:29,042 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:29,042 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:29,042 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:29,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:29,088 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:29,088 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 17:28:29,088 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:29,089 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 17:28:29,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 17:28:29,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 17:28:29,089 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 5 states. [2018-01-24 17:28:29,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:29,099 INFO L93 Difference]: Finished difference Result 55 states and 54 transitions. [2018-01-24 17:28:29,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 17:28:29,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-01-24 17:28:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:29,100 INFO L225 Difference]: With dead ends: 55 [2018-01-24 17:28:29,100 INFO L226 Difference]: Without dead ends: 49 [2018-01-24 17:28:29,101 INFO L525 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 [2018-01-24 17:28:29,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-01-24 17:28:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-01-24 17:28:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-01-24 17:28:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 48 transitions. [2018-01-24 17:28:29,108 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 48 transitions. Word has length 41 [2018-01-24 17:28:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:29,109 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 48 transitions. [2018-01-24 17:28:29,109 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 17:28:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 48 transitions. [2018-01-24 17:28:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-24 17:28:29,110 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:28:29,110 INFO L322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:28:29,110 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 17:28:29,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1792979891, now seen corresponding path program 1 times [2018-01-24 17:28:29,110 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:28:29,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:29,111 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:28:29,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:28:29,112 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:28:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:28:29,126 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:28:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:28:29,520 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:28:29,520 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-01-24 17:28:29,521 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:28:29,521 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 17:28:29,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 17:28:29,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-01-24 17:28:29,522 INFO L87 Difference]: Start difference. First operand 49 states and 48 transitions. Second operand 15 states. [2018-01-24 17:28:29,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:28:29,953 INFO L93 Difference]: Finished difference Result 49 states and 48 transitions. [2018-01-24 17:28:29,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-24 17:28:29,954 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2018-01-24 17:28:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:28:29,954 INFO L225 Difference]: With dead ends: 49 [2018-01-24 17:28:29,954 INFO L226 Difference]: Without dead ends: 0 [2018-01-24 17:28:29,955 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2018-01-24 17:28:29,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-24 17:28:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-24 17:28:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-24 17:28:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-24 17:28:29,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2018-01-24 17:28:29,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:28:29,955 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-24 17:28:29,955 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 17:28:29,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-24 17:28:29,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-24 17:28:29,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-24 17:28:30,454 INFO L404 ceAbstractionStarter]: At program point f6ENTRY(lines 1434 1436) the Hoare annotation is: true [2018-01-24 17:28:30,454 INFO L401 ceAbstractionStarter]: For program point f6FINAL(lines 1434 1436) no Hoare annotation was computed. [2018-01-24 17:28:30,454 INFO L401 ceAbstractionStarter]: For program point f6EXIT(lines 1434 1436) no Hoare annotation was computed. [2018-01-24 17:28:30,454 INFO L397 ceAbstractionStarter]: At program point ldv_mallocENTRY(lines 1072 1078) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)) [2018-01-24 17:28:30,454 INFO L401 ceAbstractionStarter]: For program point L1073(lines 1073 1077) no Hoare annotation was computed. [2018-01-24 17:28:30,454 INFO L401 ceAbstractionStarter]: For program point L1074'(line 1074) no Hoare annotation was computed. [2018-01-24 17:28:30,455 INFO L401 ceAbstractionStarter]: For program point ldv_mallocEXIT(lines 1072 1078) no Hoare annotation was computed. [2018-01-24 17:28:30,455 INFO L401 ceAbstractionStarter]: For program point ldv_mallocFINAL(lines 1072 1078) no Hoare annotation was computed. [2018-01-24 17:28:30,455 INFO L401 ceAbstractionStarter]: For program point L1074(line 1074) no Hoare annotation was computed. [2018-01-24 17:28:30,455 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,455 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 1476) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-24 17:28:30,455 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,455 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 1476) the Hoare annotation is: true [2018-01-24 17:28:30,455 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,455 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 1476) the Hoare annotation is: true [2018-01-24 17:28:30,456 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,456 INFO L397 ceAbstractionStarter]: At program point mainENTRY(lines 1474 1476) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)) [2018-01-24 17:28:30,456 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 1474 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,456 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 1474 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,456 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 1474 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,456 INFO L401 ceAbstractionStarter]: For program point disconnect_6Err0RequiresViolation(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,456 INFO L397 ceAbstractionStarter]: At program point disconnect_6ENTRY(lines 1461 1463) the Hoare annotation is: (or (= |#valid| |old(#valid)|) (not (= (select |old(#valid)| (select (select |#memory_$Pointer$.base| |disconnect_6_#in~a.base|) |disconnect_6_#in~a.offset|)) 1)) (not (= (select |old(#valid)| |disconnect_6_#in~a.base|) 1)) (not (= 0 |disconnect_6_#in~a.offset|)) (not (= 0 (select (select |#memory_$Pointer$.offset| |disconnect_6_#in~a.base|) |disconnect_6_#in~a.offset|))) (< (select |#length| |disconnect_6_#in~a.base|) 4)) [2018-01-24 17:28:30,456 INFO L401 ceAbstractionStarter]: For program point disconnect_6Err1RequiresViolation(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point L1462''(line 1462) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point L1462'(line 1462) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point disconnect_6Err3RequiresViolation(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point disconnect_6FINAL(lines 1461 1463) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point disconnect_6Err2RequiresViolation(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point disconnect_6EXIT(lines 1461 1463) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point L1462(line 1462) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point entry_pointEXIT(lines 1466 1472) no Hoare annotation was computed. [2018-01-24 17:28:30,457 INFO L401 ceAbstractionStarter]: For program point L1467'(line 1467) no Hoare annotation was computed. [2018-01-24 17:28:30,458 INFO L397 ceAbstractionStarter]: At program point L1470(line 1470) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |entry_point_~#a7~11.base|) |entry_point_~#a7~11.offset|))) (let ((.cse1 (select |old(#valid)| |entry_point_~#a7~11.base|)) (.cse2 (select |old(#valid)| .cse0))) (and (<= 4 (select |#length| |entry_point_~#a7~11.base|)) (= 0 (select (select |#memory_$Pointer$.offset| |entry_point_~#a7~11.base|) |entry_point_~#a7~11.offset|)) (= 1 (select |#valid| .cse0)) (= 0 .cse1) (= 0 |entry_point_~#a7~11.offset|) (= (store (store |#valid| .cse0 .cse2) |entry_point_~#a7~11.base| .cse1) |old(#valid)|) (= 0 .cse2) (not (= 0 .cse0)) (not (= |entry_point_~#a7~11.base| .cse0)) (= 1 (select |#valid| |entry_point_~#a7~11.base|)) (= entry_point_~ret~11 0)))) [2018-01-24 17:28:30,458 INFO L401 ceAbstractionStarter]: For program point L1469'(lines 1469 1471) no Hoare annotation was computed. [2018-01-24 17:28:30,458 INFO L397 ceAbstractionStarter]: At program point entry_pointENTRY(lines 1466 1472) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)) [2018-01-24 17:28:30,458 INFO L401 ceAbstractionStarter]: For program point L1469(lines 1469 1471) no Hoare annotation was computed. [2018-01-24 17:28:30,458 INFO L401 ceAbstractionStarter]: For program point entry_pointFINAL(lines 1466 1472) no Hoare annotation was computed. [2018-01-24 17:28:30,458 INFO L397 ceAbstractionStarter]: At program point L1467(line 1467) the Hoare annotation is: (let ((.cse0 (@diff |old(#length)| |#length|))) (and (or (= 0 (select |old(#valid)| .cse0)) (= |old(#length)| |#length|)) (= |#length| (store |old(#length)| .cse0 (select |#length| .cse0))) (= 0 |entry_point_~#a7~11.offset|) (= 4 (select |#length| |entry_point_~#a7~11.base|)) (= (select |old(#valid)| |entry_point_~#a7~11.base|) 0) (= 1 (select |#valid| |entry_point_~#a7~11.base|)) (= |#valid| (let ((.cse1 (@diff |old(#valid)| |#valid|))) (store |old(#valid)| .cse1 (select |#valid| .cse1)))))) [2018-01-24 17:28:30,459 INFO L401 ceAbstractionStarter]: For program point L1468(line 1468) no Hoare annotation was computed. [2018-01-24 17:28:30,459 INFO L401 ceAbstractionStarter]: For program point g6EXIT(lines 1438 1440) no Hoare annotation was computed. [2018-01-24 17:28:30,459 INFO L401 ceAbstractionStarter]: For program point g6FINAL(lines 1438 1440) no Hoare annotation was computed. [2018-01-24 17:28:30,459 INFO L404 ceAbstractionStarter]: At program point g6ENTRY(lines 1438 1440) the Hoare annotation is: true [2018-01-24 17:28:30,459 INFO L401 ceAbstractionStarter]: For program point L1453'(line 1453) no Hoare annotation was computed. [2018-01-24 17:28:30,459 INFO L401 ceAbstractionStarter]: For program point probe1_6Err1RequiresViolation(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,459 INFO L397 ceAbstractionStarter]: At program point L1452(line 1452) the Hoare annotation is: (or (let ((.cse0 (@diff |old(#length)| |#length|))) (and (= |#length| (store |old(#length)| .cse0 (select |#length| .cse0))) (= 1 (select |#valid| probe1_6_~a.base)) (= (store |#valid| probe1_6_~p~9.base 0) |old(#valid)|) (not (= 0 probe1_6_~p~9.base)) (<= (+ probe1_6_~ret~9 1) 0) (= 1 (select |#valid| probe1_6_~p~9.base)) (or (= 0 (select |old(#valid)| .cse0)) (= |old(#length)| |#length|)) (= (select |#length| probe1_6_~a.base) 4) (= probe1_6_~p~9.offset 0) (= probe1_6_~a.offset 0))) (not (= (select |old(#length)| |probe1_6_#in~a.base|) 4)) (not (= (select |old(#valid)| |probe1_6_#in~a.base|) 1)) (not (= 0 |probe1_6_#in~a.offset|))) [2018-01-24 17:28:30,459 INFO L401 ceAbstractionStarter]: For program point L1453(line 1453) no Hoare annotation was computed. [2018-01-24 17:28:30,460 INFO L397 ceAbstractionStarter]: At program point L1450(line 1450) the Hoare annotation is: (or (let ((.cse0 (@diff |old(#length)| |#length|))) (and (= |#length| (store |old(#length)| .cse0 (select |#length| .cse0))) (not (= 0 probe1_6_~p~9.base)) (= 1 (select |#valid| probe1_6_~p~9.base)) (= 0 (select |old(#valid)| probe1_6_~p~9.base)) (or (= 0 (select |old(#valid)| .cse0)) (= |old(#length)| |#length|)) (= probe1_6_~a.base |probe1_6_#in~a.base|) (= probe1_6_~p~9.offset 0) (= probe1_6_~a.offset 0) (= |#valid| (let ((.cse1 (@diff |old(#valid)| |#valid|))) (store |old(#valid)| .cse1 (select |#valid| .cse1)))))) (not (= (select |old(#length)| |probe1_6_#in~a.base|) 4)) (not (= (select |old(#valid)| |probe1_6_#in~a.base|) 1)) (not (= 0 |probe1_6_#in~a.offset|))) [2018-01-24 17:28:30,460 INFO L401 ceAbstractionStarter]: For program point L1451(lines 1451 1452) no Hoare annotation was computed. [2018-01-24 17:28:30,460 INFO L401 ceAbstractionStarter]: For program point L1447'(line 1447) no Hoare annotation was computed. [2018-01-24 17:28:30,460 INFO L397 ceAbstractionStarter]: At program point probe1_6ENTRY(lines 1442 1459) the Hoare annotation is: (or (and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)) (not (= (select |old(#length)| |probe1_6_#in~a.base|) 4)) (not (= (select |old(#valid)| |probe1_6_#in~a.base|) 1)) (not (= 0 |probe1_6_#in~a.offset|))) [2018-01-24 17:28:30,460 INFO L401 ceAbstractionStarter]: For program point L1457(line 1457) no Hoare annotation was computed. [2018-01-24 17:28:30,460 INFO L401 ceAbstractionStarter]: For program point probe1_6Err2RequiresViolation(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,460 INFO L401 ceAbstractionStarter]: For program point L1444'(line 1444) no Hoare annotation was computed. [2018-01-24 17:28:30,460 INFO L401 ceAbstractionStarter]: For program point L1450'(line 1450) no Hoare annotation was computed. [2018-01-24 17:28:30,460 INFO L401 ceAbstractionStarter]: For program point probe1_6Err3RequiresViolation(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,461 INFO L397 ceAbstractionStarter]: At program point L1444(line 1444) the Hoare annotation is: (or (not (= (select |old(#length)| |probe1_6_#in~a.base|) 4)) (not (= (select |old(#valid)| |probe1_6_#in~a.base|) 1)) (and (= |#valid| |old(#valid)|) (= probe1_6_~a.base |probe1_6_#in~a.base|) (<= 3 probe1_6_~ret~9) (= probe1_6_~a.offset 0) (= |old(#length)| |#length|)) (not (= 0 |probe1_6_#in~a.offset|))) [2018-01-24 17:28:30,461 INFO L401 ceAbstractionStarter]: For program point probe1_6EXIT(lines 1442 1459) no Hoare annotation was computed. [2018-01-24 17:28:30,461 INFO L397 ceAbstractionStarter]: At program point L1447(line 1447) the Hoare annotation is: (or (let ((.cse0 (@diff |old(#length)| |#length|))) (and (= |#length| (store |old(#length)| .cse0 (select |#length| .cse0))) (not (= 0 probe1_6_~p~9.base)) (= 1 (select |#valid| probe1_6_~p~9.base)) (= 0 (select |old(#valid)| probe1_6_~p~9.base)) (or (= 0 (select |old(#valid)| .cse0)) (= |old(#length)| |#length|)) (= probe1_6_~a.base |probe1_6_#in~a.base|) (<= 3 probe1_6_~ret~9) (= probe1_6_~p~9.offset 0) (= probe1_6_~a.offset 0) (= |#valid| (let ((.cse1 (@diff |old(#valid)| |#valid|))) (store |old(#valid)| .cse1 (select |#valid| .cse1)))))) (not (= (select |old(#length)| |probe1_6_#in~a.base|) 4)) (not (= (select |old(#valid)| |probe1_6_#in~a.base|) 1)) (not (= 0 |probe1_6_#in~a.offset|))) [2018-01-24 17:28:30,461 INFO L401 ceAbstractionStarter]: For program point L1448(lines 1448 1449) no Hoare annotation was computed. [2018-01-24 17:28:30,461 INFO L401 ceAbstractionStarter]: For program point L1445(lines 1445 1446) no Hoare annotation was computed. [2018-01-24 17:28:30,461 INFO L401 ceAbstractionStarter]: For program point probe1_6Err0RequiresViolation(lines 1 1476) no Hoare annotation was computed. [2018-01-24 17:28:30,461 INFO L401 ceAbstractionStarter]: For program point probe1_6FINAL(lines 1442 1459) no Hoare annotation was computed. [2018-01-24 17:28:30,465 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (@diff (Array Int Int) (Array Int Int) Int) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:506) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:210) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:125) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translateStore(Term2Expression.java:277) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:151) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:125) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:159) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:125) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:159) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:125) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:159) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:107) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:91) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:488) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:219) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-24 17:28:30,468 INFO L168 Benchmark]: Toolchain (without parser) took 6363.46 ms. Allocated memory was 305.7 MB in the beginning and 559.4 MB in the end (delta: 253.8 MB). Free memory was 264.7 MB in the beginning and 368.8 MB in the end (delta: -104.1 MB). Peak memory consumption was 149.6 MB. Max. memory is 5.3 GB. [2018-01-24 17:28:30,470 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:28:30,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.14 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 251.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-01-24 17:28:30,470 INFO L168 Benchmark]: Boogie Preprocessor took 37.53 ms. Allocated memory is still 305.7 MB. Free memory was 251.6 MB in the beginning and 249.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:28:30,471 INFO L168 Benchmark]: RCFGBuilder took 273.81 ms. Allocated memory is still 305.7 MB. Free memory was 249.6 MB in the beginning and 230.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-01-24 17:28:30,471 INFO L168 Benchmark]: TraceAbstraction took 5813.32 ms. Allocated memory was 305.7 MB in the beginning and 559.4 MB in the end (delta: 253.8 MB). Free memory was 230.9 MB in the beginning and 368.8 MB in the end (delta: -137.9 MB). Peak memory consumption was 115.9 MB. Max. memory is 5.3 GB. [2018-01-24 17:28:30,473 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 232.14 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 251.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.53 ms. Allocated memory is still 305.7 MB. Free memory was 251.6 MB in the beginning and 249.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 273.81 ms. Allocated memory is still 305.7 MB. Free memory was 249.6 MB in the beginning and 230.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 5813.32 ms. Allocated memory was 305.7 MB in the beginning and 559.4 MB in the end (delta: 253.8 MB). Free memory was 230.9 MB in the beginning and 368.8 MB in the end (delta: -137.9 MB). Peak memory consumption was 115.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1474]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (@diff (Array Int Int) (Array Int Int) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (@diff (Array Int Int) (Array Int Int) Int): de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:506) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test7_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-28-30-480.csv Received shutdown request...