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/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e [2018-01-31 09:02:13,973 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:02:13,975 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:02:13,999 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:02:13,999 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:02:14,000 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:02:14,001 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:02:14,006 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:02:14,008 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:02:14,009 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:02:14,011 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:02:14,011 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:02:14,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:02:14,023 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:02:14,024 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:02:14,027 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:02:14,028 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:02:14,030 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:02:14,032 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:02:14,038 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:02:14,040 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 09:02:14,041 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 09:02:14,041 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 09:02:14,042 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 09:02:14,047 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 09:02:14,049 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 09:02:14,049 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 09:02:14,050 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 09:02:14,050 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 09:02:14,050 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:02:14,051 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:02:14,055 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 [2018-01-31 09:02:14,069 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:02:14,069 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:02:14,070 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:02:14,070 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:02:14,072 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:02:14,072 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:02:14,072 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:02:14,073 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:02:14,073 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:02:14,073 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 09:02:14,074 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:02:14,074 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:02:14,074 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:02:14,074 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 09:02:14,074 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 09:02:14,074 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 09:02:14,075 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:02:14,075 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:02:14,076 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:02:14,076 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:02:14,076 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:02:14,076 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:02:14,076 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:02:14,076 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:02:14,077 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:02:14,077 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:02:14,077 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:02:14,077 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:02:14,077 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:02:14,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:02:14,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:02:14,078 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:02:14,079 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:02:14,080 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:02:14,127 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:02:14,143 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:02:14,148 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:02:14,150 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:02:14,150 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:02:14,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-31 09:02:14,354 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:02:14,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:02:14,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:02:14,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:02:14,389 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:02:14,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2403e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14, skipping insertion in model container [2018-01-31 09:02:14,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,414 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:02:14,493 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:02:14,655 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:02:14,670 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:02:14,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14 WrapperNode [2018-01-31 09:02:14,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:02:14,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:02:14,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:02:14,681 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:02:14,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (1/1) ... [2018-01-31 09:02:14,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:02:14,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:02:14,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:02:14,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:02:14,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (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 [2018-01-31 09:02:14,792 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:02:14,792 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:02:14,792 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-31 09:02:14,792 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-31 09:02:14,792 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:02:14,792 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:02:14,793 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:02:14,793 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:02:14,793 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-31 09:02:14,793 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-31 09:02:14,793 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:02:14,793 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-31 09:02:14,794 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-31 09:02:14,794 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:02:14,794 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:02:14,794 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:02:15,142 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:02:15,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:02:15 BoogieIcfgContainer [2018-01-31 09:02:15,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:02:15,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:02:15,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:02:15,150 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:02:15,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:02:14" (1/3) ... [2018-01-31 09:02:15,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c56b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:02:15, skipping insertion in model container [2018-01-31 09:02:15,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:02:14" (2/3) ... [2018-01-31 09:02:15,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c56b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:02:15, skipping insertion in model container [2018-01-31 09:02:15,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:02:15" (3/3) ... [2018-01-31 09:02:15,154 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-31 09:02:15,162 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:02:15,169 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-31 09:02:15,218 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:02:15,218 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:02:15,218 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:02:15,218 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:02:15,218 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:02:15,219 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:02:15,219 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:02:15,219 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:02:15,220 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:02:15,234 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-31 09:02:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-31 09:02:15,241 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:15,244 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:15,244 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-31 09:02:15,250 INFO L82 PathProgramCache]: Analyzing trace with hash -706503190, now seen corresponding path program 1 times [2018-01-31 09:02:15,252 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:15,252 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:15,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:15,323 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:15,323 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:15,401 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:02:15,566 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:15,566 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:02:15,568 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 09:02:15,582 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 09:02:15,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 09:02:15,585 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2018-01-31 09:02:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:15,860 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-01-31 09:02:15,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 09:02:15,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-01-31 09:02:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:15,876 INFO L225 Difference]: With dead ends: 49 [2018-01-31 09:02:15,876 INFO L226 Difference]: Without dead ends: 42 [2018-01-31 09:02:15,880 INFO L554 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 [2018-01-31 09:02:15,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-31 09:02:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-01-31 09:02:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-31 09:02:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-01-31 09:02:15,920 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 21 [2018-01-31 09:02:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:15,920 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-01-31 09:02:15,920 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 09:02:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-01-31 09:02:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-31 09:02:15,922 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:15,922 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:15,922 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-31 09:02:15,923 INFO L82 PathProgramCache]: Analyzing trace with hash 2003875197, now seen corresponding path program 1 times [2018-01-31 09:02:15,923 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:15,923 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:15,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:15,925 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:15,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:15,945 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:02:16,162 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:16,162 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-31 09:02:16,163 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:02:16,164 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:02:16,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:02:16,164 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 6 states. [2018-01-31 09:02:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:16,353 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-01-31 09:02:16,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:02:16,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-31 09:02:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:16,355 INFO L225 Difference]: With dead ends: 48 [2018-01-31 09:02:16,355 INFO L226 Difference]: Without dead ends: 44 [2018-01-31 09:02:16,356 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:02:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-31 09:02:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2018-01-31 09:02:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-31 09:02:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-01-31 09:02:16,365 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 22 [2018-01-31 09:02:16,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:16,367 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-01-31 09:02:16,367 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:02:16,368 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-01-31 09:02:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-31 09:02:16,369 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:16,369 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:16,369 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-31 09:02:16,369 INFO L82 PathProgramCache]: Analyzing trace with hash -675106715, now seen corresponding path program 1 times [2018-01-31 09:02:16,370 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:16,370 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:16,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:16,372 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:16,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:16,406 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-31 09:02:16,538 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:02:16,538 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 [2018-01-31 09:02:16,547 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:16,590 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:02:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-31 09:02:16,733 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:02:16,733 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-01-31 09:02:16,733 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-31 09:02:16,733 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-31 09:02:16,734 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:02:16,734 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2018-01-31 09:02:16,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:16,926 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2018-01-31 09:02:16,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-31 09:02:16,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-01-31 09:02:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:16,927 INFO L225 Difference]: With dead ends: 62 [2018-01-31 09:02:16,928 INFO L226 Difference]: Without dead ends: 39 [2018-01-31 09:02:16,928 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:02:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-31 09:02:16,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-01-31 09:02:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-31 09:02:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-01-31 09:02:16,935 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2018-01-31 09:02:16,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:16,935 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-01-31 09:02:16,936 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-31 09:02:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-01-31 09:02:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-31 09:02:16,937 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:16,937 INFO L351 BasicCegarLoop]: trace histogram [2, 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] [2018-01-31 09:02:16,938 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-31 09:02:16,938 INFO L82 PathProgramCache]: Analyzing trace with hash -443251465, now seen corresponding path program 1 times [2018-01-31 09:02:16,938 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:16,938 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:16,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:16,940 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:16,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:16,957 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-31 09:02:17,059 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:17,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 09:02:17,059 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:02:17,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:02:17,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:02:17,060 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2018-01-31 09:02:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:17,128 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-01-31 09:02:17,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:02:17,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-31 09:02:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:17,130 INFO L225 Difference]: With dead ends: 37 [2018-01-31 09:02:17,131 INFO L226 Difference]: Without dead ends: 36 [2018-01-31 09:02:17,131 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:02:17,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-31 09:02:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-31 09:02:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-31 09:02:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-01-31 09:02:17,137 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2018-01-31 09:02:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:17,138 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-01-31 09:02:17,138 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:02:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-01-31 09:02:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-31 09:02:17,139 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:17,139 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:17,139 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-31 09:02:17,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965, now seen corresponding path program 1 times [2018-01-31 09:02:17,140 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:17,140 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:17,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,141 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:17,141 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:17,158 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-31 09:02:17,259 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:17,259 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:02:17,259 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:02:17,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:02:17,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:02:17,259 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 6 states. [2018-01-31 09:02:17,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:17,417 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-31 09:02:17,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:02:17,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-31 09:02:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:17,418 INFO L225 Difference]: With dead ends: 36 [2018-01-31 09:02:17,418 INFO L226 Difference]: Without dead ends: 35 [2018-01-31 09:02:17,419 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:02:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-31 09:02:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-31 09:02:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-31 09:02:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-01-31 09:02:17,425 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2018-01-31 09:02:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:17,426 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-01-31 09:02:17,426 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:02:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-01-31 09:02:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-31 09:02:17,427 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:17,428 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:02:17,428 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-31 09:02:17,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1330964, now seen corresponding path program 1 times [2018-01-31 09:02:17,428 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:17,428 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:17,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,430 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:17,430 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:02:17,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:02:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-31 09:02:17,661 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:02:17,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:02:17,664 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:02:17,665 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:02:17,665 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:02:17,665 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2018-01-31 09:02:17,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:02:17,861 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-01-31 09:02:17,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-31 09:02:17,862 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-31 09:02:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:02:17,864 INFO L225 Difference]: With dead ends: 35 [2018-01-31 09:02:17,864 INFO L226 Difference]: Without dead ends: 34 [2018-01-31 09:02:17,864 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:02:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-01-31 09:02:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2018-01-31 09:02:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-31 09:02:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-01-31 09:02:17,869 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 31 [2018-01-31 09:02:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:02:17,870 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-01-31 09:02:17,870 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:02:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-01-31 09:02:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-31 09:02:17,871 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:02:17,871 INFO L351 BasicCegarLoop]: trace histogram [2, 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] [2018-01-31 09:02:17,872 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-31 09:02:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2120047512, now seen corresponding path program 1 times [2018-01-31 09:02:17,872 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:02:17,872 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:02:17,874 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,874 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:02:17,874 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:02:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 09:02:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 09:02:17,984 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-01-31 09:02:17,999 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-31 09:02:18,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:02:18 BoogieIcfgContainer [2018-01-31 09:02:18,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:02:18,015 INFO L168 Benchmark]: Toolchain (without parser) took 3660.35 ms. Allocated memory was 303.6 MB in the beginning and 454.0 MB in the end (delta: 150.5 MB). Free memory was 262.3 MB in the beginning and 326.8 MB in the end (delta: -64.6 MB). Peak memory consumption was 85.9 MB. Max. memory is 5.3 GB. [2018-01-31 09:02:18,016 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 303.6 MB. Free memory is still 268.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:02:18,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.02 ms. Allocated memory is still 303.6 MB. Free memory was 262.3 MB in the beginning and 248.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:02:18,017 INFO L168 Benchmark]: Boogie Preprocessor took 38.18 ms. Allocated memory is still 303.6 MB. Free memory is still 248.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:02:18,017 INFO L168 Benchmark]: RCFGBuilder took 423.87 ms. Allocated memory is still 303.6 MB. Free memory was 248.3 MB in the beginning and 233.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:02:18,018 INFO L168 Benchmark]: TraceAbstraction took 2870.72 ms. Allocated memory was 303.6 MB in the beginning and 454.0 MB in the end (delta: 150.5 MB). Free memory was 233.4 MB in the beginning and 326.8 MB in the end (delta: -93.5 MB). Peak memory consumption was 57.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:02:18,019 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 303.6 MB. Free memory is still 268.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 298.02 ms. Allocated memory is still 303.6 MB. Free memory was 262.3 MB in the beginning and 248.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.18 ms. Allocated memory is still 303.6 MB. Free memory is still 248.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 423.87 ms. Allocated memory is still 303.6 MB. Free memory was 248.3 MB in the beginning and 233.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2870.72 ms. Allocated memory was 303.6 MB in the beginning and 454.0 MB in the end (delta: 150.5 MB). Free memory was 233.4 MB in the beginning and 326.8 MB in the end (delta: -93.5 MB). Peak memory consumption was 57.0 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: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1444] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() VAL [\old(size)=4, __VERIFIER_nondet_int()=1, size=4] [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={6:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); VAL [ldv_malloc(sizeof(int))={6:0}, p={6:0}] [L1436] COND TRUE \read(*p) VAL [p={6:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) VAL [\old(size)=4, __VERIFIER_nondet_int()=0, size=4] [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}, q={0:0}] [L1438] FCALL free(q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 3 error locations. UNSAFE Result, 2.8s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 195 SDtfs, 36 SDslu, 603 SDs, 0 SdLazy, 116 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 8518 SizeOfPredicates, 1 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 33/35 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/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_09-02-18-031.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_09-02-18-031.csv Received shutdown request...