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_SS.epf -i ../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 22:49:14,923 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 22:49:14,925 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 22:49:14,939 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 22:49:14,940 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 22:49:14,941 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 22:49:14,942 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 22:49:14,943 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 22:49:14,945 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 22:49:14,946 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 22:49:14,947 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 22:49:14,947 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 22:49:14,948 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 22:49:14,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 22:49:14,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 22:49:14,953 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 22:49:14,955 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 22:49:14,957 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 22:49:14,958 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 22:49:14,959 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 22:49:14,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-28 22:49:14,962 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-28 22:49:14,962 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-28 22:49:14,963 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-28 22:49:14,964 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-28 22:49:14,965 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-28 22:49:14,965 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-28 22:49:14,966 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-28 22:49:14,966 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-28 22:49:14,966 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 22:49:14,967 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 22:49:14,967 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_SS.epf [2018-01-28 22:49:14,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 22:49:14,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 22:49:14,976 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 22:49:14,976 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 22:49:14,977 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 22:49:14,977 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 22:49:14,977 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 22:49:14,977 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 22:49:14,977 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 22:49:14,977 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 22:49:14,978 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 22:49:14,978 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 22:49:14,978 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 22:49:14,978 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 22:49:14,978 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 22:49:14,978 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 22:49:14,978 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 22:49:14,978 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 22:49:14,979 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 22:49:14,979 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 22:49:14,979 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 22:49:14,979 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 22:49:14,979 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 22:49:14,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 22:49:14,980 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 22:49:14,980 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 22:49:14,980 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 22:49:14,980 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 22:49:14,980 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 22:49:14,980 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 22:49:14,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 22:49:14,980 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 22:49:14,981 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 22:49:14,981 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 22:49:15,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 22:49:15,021 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 22:49:15,025 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 22:49:15,026 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 22:49:15,027 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 22:49:15,027 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-01-28 22:49:15,176 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 22:49:15,181 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 22:49:15,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 22:49:15,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 22:49:15,187 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 22:49:15,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67990aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15, skipping insertion in model container [2018-01-28 22:49:15,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,205 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:49:15,243 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:49:15,367 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:49:15,385 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:49:15,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15 WrapperNode [2018-01-28 22:49:15,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 22:49:15,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 22:49:15,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 22:49:15,396 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 22:49:15,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (1/1) ... [2018-01-28 22:49:15,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 22:49:15,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 22:49:15,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 22:49:15,438 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 22:49:15,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (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 [2018-01-28 22:49:15,488 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 22:49:15,488 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 22:49:15,488 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-28 22:49:15,488 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 22:49:15,488 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 22:49:15,489 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 22:49:15,489 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-28 22:49:15,489 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-28 22:49:15,489 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 22:49:15,489 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 22:49:15,489 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 22:49:15,489 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-28 22:49:15,490 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 22:49:15,490 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-28 22:49:15,490 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-28 22:49:15,490 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 22:49:15,490 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 22:49:15,490 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 22:49:15,812 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 22:49:15,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:49:15 BoogieIcfgContainer [2018-01-28 22:49:15,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 22:49:15,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 22:49:15,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 22:49:15,816 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 22:49:15,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:49:15" (1/3) ... [2018-01-28 22:49:15,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616098ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:49:15, skipping insertion in model container [2018-01-28 22:49:15,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:49:15" (2/3) ... [2018-01-28 22:49:15,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616098ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:49:15, skipping insertion in model container [2018-01-28 22:49:15,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:49:15" (3/3) ... [2018-01-28 22:49:15,821 INFO L107 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-01-28 22:49:15,828 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 22:49:15,835 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-01-28 22:49:15,874 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 22:49:15,874 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 22:49:15,874 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 22:49:15,874 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 22:49:15,875 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 22:49:15,875 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 22:49:15,875 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 22:49:15,875 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 22:49:15,876 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 22:49:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2018-01-28 22:49:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-28 22:49:15,899 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:15,900 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:49:15,900 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:15,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1207376992, now seen corresponding path program 1 times [2018-01-28 22:49:15,906 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:15,906 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:15,948 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:15,949 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:15,949 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:49:15,998 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:49:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:49:16,035 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:49:16,035 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-28 22:49:16,036 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-28 22:49:16,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-28 22:49:16,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-28 22:49:16,049 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 2 states. [2018-01-28 22:49:16,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:49:16,153 INFO L93 Difference]: Finished difference Result 158 states and 174 transitions. [2018-01-28 22:49:16,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-28 22:49:16,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-28 22:49:16,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:49:16,163 INFO L225 Difference]: With dead ends: 158 [2018-01-28 22:49:16,164 INFO L226 Difference]: Without dead ends: 85 [2018-01-28 22:49:16,168 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-28 22:49:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-28 22:49:16,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-01-28 22:49:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-01-28 22:49:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2018-01-28 22:49:16,200 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 14 [2018-01-28 22:49:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:49:16,201 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2018-01-28 22:49:16,201 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-28 22:49:16,201 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2018-01-28 22:49:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-28 22:49:16,201 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:16,202 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:49:16,202 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:16,202 INFO L82 PathProgramCache]: Analyzing trace with hash -678713050, now seen corresponding path program 1 times [2018-01-28 22:49:16,202 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:16,202 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:16,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:16,203 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:16,203 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:49:16,219 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:49:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:49:16,280 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:49:16,280 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:49:16,282 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:49:16,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:49:16,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:49:16,283 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 5 states. [2018-01-28 22:49:16,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:49:16,485 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2018-01-28 22:49:16,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:49:16,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-28 22:49:16,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:49:16,487 INFO L225 Difference]: With dead ends: 112 [2018-01-28 22:49:16,487 INFO L226 Difference]: Without dead ends: 100 [2018-01-28 22:49:16,488 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:49:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-01-28 22:49:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2018-01-28 22:49:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-01-28 22:49:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2018-01-28 22:49:16,499 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 16 [2018-01-28 22:49:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:49:16,500 INFO L432 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2018-01-28 22:49:16,500 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:49:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2018-01-28 22:49:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-28 22:49:16,501 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:16,501 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:49:16,501 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:16,501 INFO L82 PathProgramCache]: Analyzing trace with hash -678713049, now seen corresponding path program 1 times [2018-01-28 22:49:16,501 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:16,502 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:16,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:16,503 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:16,503 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:49:16,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:49:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:49:16,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:49:16,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:49:16,627 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:49:16,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:49:16,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:49:16,627 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 5 states. [2018-01-28 22:49:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:49:16,796 INFO L93 Difference]: Finished difference Result 138 states and 145 transitions. [2018-01-28 22:49:16,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:49:16,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-01-28 22:49:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:49:16,797 INFO L225 Difference]: With dead ends: 138 [2018-01-28 22:49:16,798 INFO L226 Difference]: Without dead ends: 126 [2018-01-28 22:49:16,798 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:49:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-28 22:49:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 116. [2018-01-28 22:49:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-28 22:49:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2018-01-28 22:49:16,806 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 16 [2018-01-28 22:49:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:49:16,807 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2018-01-28 22:49:16,807 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:49:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2018-01-28 22:49:16,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-28 22:49:16,807 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:16,808 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:49:16,808 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:16,808 INFO L82 PathProgramCache]: Analyzing trace with hash 111644630, now seen corresponding path program 1 times [2018-01-28 22:49:16,808 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:16,808 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:16,809 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:16,809 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:16,809 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:49:16,829 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:49:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:49:16,896 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:49:16,896 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:49:16,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:49:16,897 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:49:16,897 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:49:16,897 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand 7 states. [2018-01-28 22:49:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:49:17,336 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2018-01-28 22:49:17,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-28 22:49:17,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-28 22:49:17,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:49:17,339 INFO L225 Difference]: With dead ends: 242 [2018-01-28 22:49:17,339 INFO L226 Difference]: Without dead ends: 239 [2018-01-28 22:49:17,342 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:49:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-28 22:49:17,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 122. [2018-01-28 22:49:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-28 22:49:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2018-01-28 22:49:17,355 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 28 [2018-01-28 22:49:17,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:49:17,356 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2018-01-28 22:49:17,356 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:49:17,356 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2018-01-28 22:49:17,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-28 22:49:17,357 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:17,358 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:49:17,358 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:17,358 INFO L82 PathProgramCache]: Analyzing trace with hash 111644631, now seen corresponding path program 1 times [2018-01-28 22:49:17,358 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:17,358 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:17,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:17,360 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:17,360 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:49:17,377 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:49:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:49:17,502 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:49:17,502 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:49:17,503 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:49:17,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:49:17,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:49:17,503 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 7 states. [2018-01-28 22:49:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:49:17,917 INFO L93 Difference]: Finished difference Result 243 states and 261 transitions. [2018-01-28 22:49:17,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-28 22:49:17,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-28 22:49:17,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:49:17,920 INFO L225 Difference]: With dead ends: 243 [2018-01-28 22:49:17,920 INFO L226 Difference]: Without dead ends: 236 [2018-01-28 22:49:17,920 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-01-28 22:49:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-01-28 22:49:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 101. [2018-01-28 22:49:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-28 22:49:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2018-01-28 22:49:17,928 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 28 [2018-01-28 22:49:17,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:49:17,928 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2018-01-28 22:49:17,928 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:49:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2018-01-28 22:49:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-28 22:49:17,929 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:17,929 INFO L330 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:49:17,930 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1346074579, now seen corresponding path program 1 times [2018-01-28 22:49:17,930 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:17,931 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:17,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:17,931 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:17,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:49:17,943 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:49:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:49:17,993 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:49:17,993 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:49:17,993 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:49:17,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:49:17,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:49:17,993 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand 6 states. [2018-01-28 22:49:18,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:49:18,097 INFO L93 Difference]: Finished difference Result 202 states and 213 transitions. [2018-01-28 22:49:18,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 22:49:18,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-01-28 22:49:18,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:49:18,099 INFO L225 Difference]: With dead ends: 202 [2018-01-28 22:49:18,099 INFO L226 Difference]: Without dead ends: 169 [2018-01-28 22:49:18,099 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:49:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-01-28 22:49:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 114. [2018-01-28 22:49:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-01-28 22:49:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2018-01-28 22:49:18,107 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 30 [2018-01-28 22:49:18,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:49:18,107 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2018-01-28 22:49:18,107 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:49:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2018-01-28 22:49:18,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-28 22:49:18,108 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:18,108 INFO L330 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, 1] [2018-01-28 22:49:18,108 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:18,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1580484653, now seen corresponding path program 1 times [2018-01-28 22:49:18,109 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:18,109 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:18,109 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:18,110 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:18,110 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:49:18,119 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:49:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:49:18,218 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:49:18,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:49:18,218 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:49:18,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:49:18,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:49:18,219 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 7 states. [2018-01-28 22:49:18,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:49:18,399 INFO L93 Difference]: Finished difference Result 161 states and 172 transitions. [2018-01-28 22:49:18,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 22:49:18,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-01-28 22:49:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:49:18,400 INFO L225 Difference]: With dead ends: 161 [2018-01-28 22:49:18,400 INFO L226 Difference]: Without dead ends: 159 [2018-01-28 22:49:18,401 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:49:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-28 22:49:18,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 112. [2018-01-28 22:49:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-28 22:49:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions. [2018-01-28 22:49:18,408 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 32 [2018-01-28 22:49:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:49:18,408 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions. [2018-01-28 22:49:18,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:49:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions. [2018-01-28 22:49:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-28 22:49:18,410 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:18,410 INFO L330 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, 1] [2018-01-28 22:49:18,410 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:18,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1580484654, now seen corresponding path program 1 times [2018-01-28 22:49:18,411 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:18,411 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:18,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:18,412 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:18,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:49:18,423 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:49:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:49:18,540 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:49:18,540 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:49:18,541 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:49:18,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:49:18,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:49:18,541 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand 7 states. [2018-01-28 22:49:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:49:18,818 INFO L93 Difference]: Finished difference Result 158 states and 171 transitions. [2018-01-28 22:49:18,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-28 22:49:18,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-01-28 22:49:18,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:49:18,836 INFO L225 Difference]: With dead ends: 158 [2018-01-28 22:49:18,836 INFO L226 Difference]: Without dead ends: 154 [2018-01-28 22:49:18,836 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-01-28 22:49:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-28 22:49:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 96. [2018-01-28 22:49:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-28 22:49:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2018-01-28 22:49:18,841 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 32 [2018-01-28 22:49:18,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:49:18,842 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2018-01-28 22:49:18,842 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:49:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2018-01-28 22:49:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-28 22:49:18,843 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:49:18,843 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:49:18,844 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:49:18,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1745969383, now seen corresponding path program 1 times [2018-01-28 22:49:18,844 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:49:18,844 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:49:18,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:18,845 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:49:18,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:49:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 22:49:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 22:49:18,886 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-28 22:49:18,902 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-28 22:49:18,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:49:18 BoogieIcfgContainer [2018-01-28 22:49:18,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 22:49:18,921 INFO L168 Benchmark]: Toolchain (without parser) took 3743.91 ms. Allocated memory was 307.8 MB in the beginning and 513.8 MB in the end (delta: 206.0 MB). Free memory was 267.8 MB in the beginning and 402.7 MB in the end (delta: -134.9 MB). Peak memory consumption was 71.1 MB. Max. memory is 5.3 GB. [2018-01-28 22:49:18,922 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 307.8 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 22:49:18,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.95 ms. Allocated memory is still 307.8 MB. Free memory was 266.8 MB in the beginning and 255.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:49:18,922 INFO L168 Benchmark]: Boogie Preprocessor took 41.39 ms. Allocated memory is still 307.8 MB. Free memory was 255.8 MB in the beginning and 254.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-28 22:49:18,923 INFO L168 Benchmark]: RCFGBuilder took 375.67 ms. Allocated memory is still 307.8 MB. Free memory was 253.8 MB in the beginning and 228.2 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 5.3 GB. [2018-01-28 22:49:18,923 INFO L168 Benchmark]: TraceAbstraction took 3106.50 ms. Allocated memory was 307.8 MB in the beginning and 513.8 MB in the end (delta: 206.0 MB). Free memory was 228.2 MB in the beginning and 402.7 MB in the end (delta: -174.5 MB). Peak memory consumption was 31.6 MB. Max. memory is 5.3 GB. [2018-01-28 22:49:18,925 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 307.8 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.95 ms. Allocated memory is still 307.8 MB. Free memory was 266.8 MB in the beginning and 255.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 41.39 ms. Allocated memory is still 307.8 MB. Free memory was 255.8 MB in the beginning and 254.8 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 375.67 ms. Allocated memory is still 307.8 MB. Free memory was 253.8 MB in the beginning and 228.2 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3106.50 ms. Allocated memory was 307.8 MB in the beginning and 513.8 MB in the end (delta: 206.0 MB). Free memory was 228.2 MB in the beginning and 402.7 MB in the end (delta: -174.5 MB). Peak memory consumption was 31.6 MB. 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: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] EXPR, FCALL malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={10:0}] [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L628] COND FALSE !(a == 0) VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L629] List t; VAL [a={10:0}, malloc(sizeof(struct node))={10:0}] [L630] List p = a; VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L638] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L645] FCALL p->h = 3 VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L646] p = a VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] [L647] EXPR, FCALL p->h VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L647] COND FALSE !(p->h == 1) VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L649] EXPR, FCALL p->h VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L649] COND FALSE !(p->h == 2) VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L651] EXPR, FCALL p->h VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L651] COND FALSE !(p->h != 3) VAL [a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=3] [L653] return 0; VAL [\result=0, a={10:0}, malloc(sizeof(struct node))={10:0}, p={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 97 locations, 25 error locations. UNSAFE Result, 3.0s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 623 SDtfs, 1234 SDslu, 1478 SDs, 0 SdLazy, 1156 SolverSat, 108 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 427 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 17306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_22-49-18-933.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-28_22-49-18-933.csv Received shutdown request...