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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 12:22:43,826 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 12:22:43,827 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 12:22:43,841 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 12:22:43,841 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 12:22:43,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 12:22:43,842 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 12:22:43,844 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 12:22:43,845 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 12:22:43,846 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 12:22:43,846 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 12:22:43,847 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 12:22:43,847 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 12:22:43,848 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 12:22:43,849 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 12:22:43,851 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 12:22:43,854 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 12:22:43,856 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 12:22:43,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 12:22:43,858 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 12:22:43,860 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 12:22:43,865 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 12:22:43,865 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 12:22:43,866 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf [2018-01-24 12:22:43,875 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 12:22:43,875 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 12:22:43,876 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 12:22:43,876 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 12:22:43,877 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 12:22:43,877 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 12:22:43,877 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 12:22:43,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 12:22:43,878 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 12:22:43,878 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 12:22:43,878 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 12:22:43,878 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 12:22:43,879 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 12:22:43,879 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 12:22:43,879 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 12:22:43,879 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 12:22:43,879 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 12:22:43,880 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 12:22:43,880 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 12:22:43,880 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 12:22:43,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 12:22:43,880 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 12:22:43,881 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 12:22:43,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 12:22:43,881 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 12:22:43,881 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 12:22:43,882 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 12:22:43,882 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 12:22:43,882 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 12:22:43,882 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 12:22:43,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 12:22:43,882 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 12:22:43,883 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 12:22:43,883 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 12:22:43,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 12:22:43,930 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 12:22:43,934 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 12:22:43,936 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 12:22:43,936 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 12:22:43,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_1_false-valid-memtrack_true-termination.i [2018-01-24 12:22:44,150 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 12:22:44,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 12:22:44,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 12:22:44,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 12:22:44,163 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 12:22:44,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2871eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44, skipping insertion in model container [2018-01-24 12:22:44,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,187 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:22:44,240 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 12:22:44,349 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:22:44,363 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 12:22:44,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44 WrapperNode [2018-01-24 12:22:44,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 12:22:44,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 12:22:44,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 12:22:44,369 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 12:22:44,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (1/1) ... [2018-01-24 12:22:44,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 12:22:44,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 12:22:44,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 12:22:44,403 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 12:22:44,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (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 12:22:44,452 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 12:22:44,452 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 12:22:44,452 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 12:22:44,452 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 12:22:44,453 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 12:22:44,453 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 12:22:44,454 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 12:22:44,454 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 12:22:44,454 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 12:22:44,454 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 12:22:44,622 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 12:22:44,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:22:44 BoogieIcfgContainer [2018-01-24 12:22:44,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 12:22:44,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 12:22:44,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 12:22:44,627 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 12:22:44,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 12:22:44" (1/3) ... [2018-01-24 12:22:44,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb4bd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:22:44, skipping insertion in model container [2018-01-24 12:22:44,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 12:22:44" (2/3) ... [2018-01-24 12:22:44,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eb4bd2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 12:22:44, skipping insertion in model container [2018-01-24 12:22:44,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 12:22:44" (3/3) ... [2018-01-24 12:22:44,630 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test18_1_false-valid-memtrack_true-termination.i [2018-01-24 12:22:44,636 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 12:22:44,642 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-01-24 12:22:44,685 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 12:22:44,686 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 12:22:44,686 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 12:22:44,686 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 12:22:44,686 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 12:22:44,686 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 12:22:44,686 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 12:22:44,687 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 12:22:44,687 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 12:22:44,704 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-01-24 12:22:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 12:22:44,712 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:22:44,713 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:22:44,713 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:22:44,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1647065445, now seen corresponding path program 1 times [2018-01-24 12:22:44,721 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:22:44,722 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:22:44,766 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:44,767 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:44,767 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:44,818 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:22:44,892 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 12:22:44,894 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:22:44,895 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 12:22:44,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 12:22:44,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 12:22:44,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 12:22:44,909 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2018-01-24 12:22:45,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:22:45,083 INFO L93 Difference]: Finished difference Result 86 states and 104 transitions. [2018-01-24 12:22:45,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 12:22:45,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-01-24 12:22:45,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:22:45,097 INFO L225 Difference]: With dead ends: 86 [2018-01-24 12:22:45,097 INFO L226 Difference]: Without dead ends: 62 [2018-01-24 12:22:45,101 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 12:22:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-24 12:22:45,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2018-01-24 12:22:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-24 12:22:45,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2018-01-24 12:22:45,149 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 17 [2018-01-24 12:22:45,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:22:45,150 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2018-01-24 12:22:45,150 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 12:22:45,150 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2018-01-24 12:22:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 12:22:45,152 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:22:45,152 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:22:45,152 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:22:45,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1810172163, now seen corresponding path program 1 times [2018-01-24 12:22:45,153 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:22:45,153 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:22:45,155 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,155 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:45,155 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:45,175 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:22:45,282 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 12:22:45,282 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:22:45,282 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 12:22:45,284 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:22:45,284 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:22:45,284 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:22:45,285 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 6 states. [2018-01-24 12:22:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:22:45,369 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2018-01-24 12:22:45,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:22:45,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-24 12:22:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:22:45,371 INFO L225 Difference]: With dead ends: 80 [2018-01-24 12:22:45,371 INFO L226 Difference]: Without dead ends: 76 [2018-01-24 12:22:45,372 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 12:22:45,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-24 12:22:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2018-01-24 12:22:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-24 12:22:45,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2018-01-24 12:22:45,380 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 19 [2018-01-24 12:22:45,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:22:45,380 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2018-01-24 12:22:45,381 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:22:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2018-01-24 12:22:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-24 12:22:45,382 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:22:45,382 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] [2018-01-24 12:22:45,382 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:22:45,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1893738511, now seen corresponding path program 1 times [2018-01-24 12:22:45,383 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:22:45,383 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:22:45,384 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,385 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:45,385 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:45,399 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:22:45,460 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 12:22:45,460 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:22:45,460 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:22:45,460 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:22:45,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:22:45,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:22:45,461 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 5 states. [2018-01-24 12:22:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:22:45,478 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2018-01-24 12:22:45,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:22:45,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-01-24 12:22:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:22:45,480 INFO L225 Difference]: With dead ends: 86 [2018-01-24 12:22:45,480 INFO L226 Difference]: Without dead ends: 42 [2018-01-24 12:22:45,480 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 12:22:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-24 12:22:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-01-24 12:22:45,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-24 12:22:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2018-01-24 12:22:45,485 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 20 [2018-01-24 12:22:45,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:22:45,485 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2018-01-24 12:22:45,485 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:22:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2018-01-24 12:22:45,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 12:22:45,486 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:22:45,486 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] [2018-01-24 12:22:45,486 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:22:45,486 INFO L82 PathProgramCache]: Analyzing trace with hash 389514349, now seen corresponding path program 1 times [2018-01-24 12:22:45,486 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:22:45,486 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:22:45,487 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,487 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:45,488 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:45,498 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:22:45,566 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 12:22:45,567 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:22:45,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:22:45,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 12:22:45,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 12:22:45,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 12:22:45,568 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 6 states. [2018-01-24 12:22:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:22:45,686 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2018-01-24 12:22:45,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 12:22:45,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-24 12:22:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:22:45,688 INFO L225 Difference]: With dead ends: 50 [2018-01-24 12:22:45,688 INFO L226 Difference]: Without dead ends: 49 [2018-01-24 12:22:45,688 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 12:22:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-01-24 12:22:45,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2018-01-24 12:22:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-24 12:22:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2018-01-24 12:22:45,695 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 22 [2018-01-24 12:22:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:22:45,696 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2018-01-24 12:22:45,696 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 12:22:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2018-01-24 12:22:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 12:22:45,697 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:22:45,697 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] [2018-01-24 12:22:45,697 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:22:45,697 INFO L82 PathProgramCache]: Analyzing trace with hash 389514350, now seen corresponding path program 1 times [2018-01-24 12:22:45,697 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:22:45,698 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:22:45,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,699 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:45,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:45,713 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:22:45,753 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 12:22:45,753 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:22:45,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:22:45,753 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:22:45,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:22:45,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:22:45,754 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 4 states. [2018-01-24 12:22:45,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:22:45,781 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2018-01-24 12:22:45,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 12:22:45,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-01-24 12:22:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:22:45,782 INFO L225 Difference]: With dead ends: 86 [2018-01-24 12:22:45,782 INFO L226 Difference]: Without dead ends: 68 [2018-01-24 12:22:45,783 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:22:45,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-24 12:22:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 48. [2018-01-24 12:22:45,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-24 12:22:45,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-01-24 12:22:45,789 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 22 [2018-01-24 12:22:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:22:45,789 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-01-24 12:22:45,789 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:22:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-01-24 12:22:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 12:22:45,790 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:22:45,790 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 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 12:22:45,790 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:22:45,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1824781139, now seen corresponding path program 1 times [2018-01-24 12:22:45,791 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:22:45,791 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:22:45,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,792 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:45,792 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:45,806 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:22:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 12:22:45,849 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:22:45,849 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 12:22:45,849 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 12:22:45,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 12:22:45,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:22:45,850 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 5 states. [2018-01-24 12:22:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:22:45,867 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2018-01-24 12:22:45,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:22:45,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 12:22:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:22:45,869 INFO L225 Difference]: With dead ends: 98 [2018-01-24 12:22:45,870 INFO L226 Difference]: Without dead ends: 62 [2018-01-24 12:22:45,870 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 12:22:45,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-24 12:22:45,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2018-01-24 12:22:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-01-24 12:22:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2018-01-24 12:22:45,879 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 26 [2018-01-24 12:22:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:22:45,879 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2018-01-24 12:22:45,880 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 12:22:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2018-01-24 12:22:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 12:22:45,881 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:22:45,881 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:22:45,881 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:22:45,881 INFO L82 PathProgramCache]: Analyzing trace with hash -85684427, now seen corresponding path program 1 times [2018-01-24 12:22:45,881 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:22:45,882 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:22:45,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,883 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:45,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:45,902 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:22:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:22:46,052 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:22:46,052 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:22:46,064 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:46,102 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:22:46,138 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 12:22:46,140 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:46,144 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 12:22:46,144 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 12:22:46,180 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:22:46,181 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:22:46,183 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-01-24 12:22:46,184 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:46,190 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 12:22:46,191 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2018-01-24 12:22:46,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:22:46,253 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:22:46,254 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-01-24 12:22:46,254 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 12:22:46,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 12:22:46,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-01-24 12:22:46,255 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 11 states. [2018-01-24 12:22:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:22:46,601 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2018-01-24 12:22:46,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 12:22:46,601 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2018-01-24 12:22:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:22:46,603 INFO L225 Difference]: With dead ends: 75 [2018-01-24 12:22:46,603 INFO L226 Difference]: Without dead ends: 73 [2018-01-24 12:22:46,603 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-01-24 12:22:46,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-24 12:22:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 48. [2018-01-24 12:22:46,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-01-24 12:22:46,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-01-24 12:22:46,613 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 28 [2018-01-24 12:22:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:22:46,613 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-01-24 12:22:46,614 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 12:22:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-01-24 12:22:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 12:22:46,615 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:22:46,615 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:22:46,616 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:22:46,617 INFO L82 PathProgramCache]: Analyzing trace with hash -85684426, now seen corresponding path program 1 times [2018-01-24 12:22:46,617 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:22:46,617 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:22:46,618 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:46,618 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:46,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:22:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:46,637 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:22:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:22:47,019 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 12:22:47,019 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 12:22:47,029 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:22:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:22:47,054 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 12:22:47,084 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-01-24 12:22:47,085 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:47,104 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2018-01-24 12:22:47,104 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:47,106 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2018-01-24 12:22:47,106 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:47,124 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-01-24 12:22:47,125 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:47,139 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 12:22:47,139 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:50, output treesize:46 [2018-01-24 12:22:47,347 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:22:47,348 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:22:47,349 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 48 [2018-01-24 12:22:47,350 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:47,406 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:22:47,408 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 48 [2018-01-24 12:22:47,409 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:47,453 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:22:47,454 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:22:47,454 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2018-01-24 12:22:47,455 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:47,491 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 12:22:47,492 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 50 [2018-01-24 12:22:47,493 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 12:22:47,530 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 2 xjuncts. [2018-01-24 12:22:47,530 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 10 variables, input treesize:107, output treesize:75 [2018-01-24 12:22:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 12:22:47,678 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 12:22:47,678 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2018-01-24 12:22:47,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-24 12:22:47,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-24 12:22:47,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=295, Unknown=1, NotChecked=0, Total=342 [2018-01-24 12:22:47,679 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 19 states. [2018-01-24 12:22:48,003 WARN L146 SmtUtils]: Spent 103ms on a formula simplification. DAG size of input: 67 DAG size of output 64 [2018-01-24 12:23:30,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:23:30,479 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2018-01-24 12:23:30,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-24 12:23:30,479 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2018-01-24 12:23:30,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:23:30,480 INFO L225 Difference]: With dead ends: 96 [2018-01-24 12:23:30,480 INFO L226 Difference]: Without dead ends: 95 [2018-01-24 12:23:30,481 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=122, Invalid=686, Unknown=4, NotChecked=0, Total=812 [2018-01-24 12:23:30,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-01-24 12:23:30,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 52. [2018-01-24 12:23:30,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-24 12:23:30,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2018-01-24 12:23:30,495 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 28 [2018-01-24 12:23:30,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:23:30,495 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2018-01-24 12:23:30,495 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-24 12:23:30,495 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2018-01-24 12:23:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 12:23:30,496 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:23:30,496 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:23:30,496 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:23:30,496 INFO L82 PathProgramCache]: Analyzing trace with hash 652258778, now seen corresponding path program 1 times [2018-01-24 12:23:30,496 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:23:30,496 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:23:30,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:23:30,498 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:23:30,498 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:23:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 12:23:30,510 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 12:23:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-24 12:23:30,551 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 12:23:30,551 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 12:23:30,552 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 12:23:30,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 12:23:30,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 12:23:30,552 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 4 states. [2018-01-24 12:23:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 12:23:30,595 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2018-01-24 12:23:30,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 12:23:30,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-01-24 12:23:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 12:23:30,596 INFO L225 Difference]: With dead ends: 75 [2018-01-24 12:23:30,597 INFO L226 Difference]: Without dead ends: 60 [2018-01-24 12:23:30,597 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 12:23:30,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-24 12:23:30,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-01-24 12:23:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-24 12:23:30,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-01-24 12:23:30,616 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 29 [2018-01-24 12:23:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 12:23:30,616 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-01-24 12:23:30,616 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 12:23:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-01-24 12:23:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 12:23:30,617 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 12:23:30,618 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 12:23:30,618 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-01-24 12:23:30,618 INFO L82 PathProgramCache]: Analyzing trace with hash -244587327, now seen corresponding path program 1 times [2018-01-24 12:23:30,618 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 12:23:30,618 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 12:23:30,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:23:30,619 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 12:23:30,620 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 12:23:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 12:23:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 12:23:30,656 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 12:23:30,669 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 12:23:30,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 12:23:30 BoogieIcfgContainer [2018-01-24 12:23:30,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 12:23:30,687 INFO L168 Benchmark]: Toolchain (without parser) took 46536.49 ms. Allocated memory was 303.6 MB in the beginning and 516.9 MB in the end (delta: 213.4 MB). Free memory was 262.6 MB in the beginning and 469.9 MB in the end (delta: -207.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 5.3 GB. [2018-01-24 12:23:30,688 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 303.6 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:23:30,689 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.06 ms. Allocated memory is still 303.6 MB. Free memory was 262.6 MB in the beginning and 249.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:23:30,689 INFO L168 Benchmark]: Boogie Preprocessor took 33.58 ms. Allocated memory is still 303.6 MB. Free memory was 249.6 MB in the beginning and 247.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 12:23:30,689 INFO L168 Benchmark]: RCFGBuilder took 220.38 ms. Allocated memory is still 303.6 MB. Free memory was 247.6 MB in the beginning and 231.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-24 12:23:30,690 INFO L168 Benchmark]: TraceAbstraction took 46062.18 ms. Allocated memory was 303.6 MB in the beginning and 516.9 MB in the end (delta: 213.4 MB). Free memory was 231.0 MB in the beginning and 469.9 MB in the end (delta: -238.9 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 12:23:30,691 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 303.6 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.06 ms. Allocated memory is still 303.6 MB. Free memory was 262.6 MB in the beginning and 249.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.58 ms. Allocated memory is still 303.6 MB. Free memory was 249.6 MB in the beginning and 247.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 220.38 ms. Allocated memory is still 303.6 MB. Free memory was 247.6 MB in the beginning and 231.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 46062.18 ms. Allocated memory was 303.6 MB in the beginning and 516.9 MB in the end (delta: 213.4 MB). Free memory was 231.0 MB in the beginning and 469.9 MB in the end (delta: -238.9 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1458]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1458. Possible FailurePath: [L1459] CALL entry_point() [L1439] int len = 10; VAL [len=10] [L1440] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) VAL [\old(size)=40] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=40, malloc(size)={42:0}, size=40] [L1074] RET return malloc(size); VAL [\old(size)=40, \result={42:0}, malloc(size)={42:0}, size=40] [L1440] EXPR ldv_malloc(sizeof(struct A18*)*len) VAL [ldv_malloc(sizeof(struct A18*)*len)={42:0}, len=10] [L1440] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L1441] struct A18 *p; [L1442] int i=0; [L1443] int j; VAL [array={42:0}, i=0, len=10] [L1444] COND FALSE !(!array) VAL [array={42:0}, i=0, len=10] [L1445] COND TRUE i=0) VAL [array={42:0}, i=0, j=-1, len=10, p={0:0}] [L1459] entry_point() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 7 error locations. UNSAFE Result, 46.0s OverallTime, 10 OverallIterations, 2 TraceHistogramMax, 43.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 379 SDtfs, 415 SDslu, 1205 SDs, 0 SdLazy, 813 SolverSat, 73 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 35.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 136 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 256 ConstructedInterpolants, 17 QuantifiedInterpolants, 44501 SizeOfPredicates, 8 NumberOfNonLiveVariables, 218 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 17/32 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test18_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_12-23-30-697.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test18_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_12-23-30-697.csv Received shutdown request...