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/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e [2018-01-31 08:26:38,925 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:26:38,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:26:38,948 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:26:38,949 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:26:38,950 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:26:38,952 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:26:38,955 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:26:38,964 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:26:38,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:26:38,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:26:38,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:26:38,967 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:26:38,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:26:38,968 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:26:38,973 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:26:38,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:26:38,979 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:26:38,980 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:26:38,983 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:26:38,985 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 08:26:38,992 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:26:38,992 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:26:38,992 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 08:26:39,008 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:26:39,008 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:26:39,009 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:26:39,009 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:26:39,010 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:26:39,010 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:26:39,010 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:26:39,010 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:26:39,011 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:26:39,011 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 08:26:39,011 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:26:39,012 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:26:39,012 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:26:39,012 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 08:26:39,012 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 08:26:39,012 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 08:26:39,012 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:26:39,013 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:26:39,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:26:39,013 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:26:39,013 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:26:39,013 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:26:39,014 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:26:39,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:26:39,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:26:39,014 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:26:39,014 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:26:39,014 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:26:39,015 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:26:39,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:26:39,016 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:26:39,016 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:26:39,017 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:26:39,017 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:26:39,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:26:39,085 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:26:39,090 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:26:39,092 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:26:39,092 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:26:39,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-31 08:26:39,357 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:26:39,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:26:39,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:26:39,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:26:39,373 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:26:39,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515535b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39, skipping insertion in model container [2018-01-31 08:26:39,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,397 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:26:39,455 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:26:39,589 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:26:39,609 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:26:39,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39 WrapperNode [2018-01-31 08:26:39,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:26:39,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:26:39,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:26:39,618 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:26:39,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (1/1) ... [2018-01-31 08:26:39,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:26:39,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:26:39,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:26:39,651 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:26:39,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (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 08:26:39,721 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:26:39,721 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:26:39,721 INFO L136 BoogieDeclarations]: Found implementation of procedure cbzero [2018-01-31 08:26:39,721 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:26:39,722 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:26:39,722 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:26:39,725 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:26:39,725 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:26:39,725 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:26:39,725 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 08:26:39,725 INFO L128 BoogieDeclarations]: Found specification of procedure cbzero [2018-01-31 08:26:39,726 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:26:39,726 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:26:39,726 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:26:40,154 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:26:40,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:26:40 BoogieIcfgContainer [2018-01-31 08:26:40,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:26:40,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:26:40,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:26:40,162 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:26:40,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:26:39" (1/3) ... [2018-01-31 08:26:40,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe4b937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:26:40, skipping insertion in model container [2018-01-31 08:26:40,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:26:39" (2/3) ... [2018-01-31 08:26:40,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe4b937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:26:40, skipping insertion in model container [2018-01-31 08:26:40,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:26:40" (3/3) ... [2018-01-31 08:26:40,167 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i [2018-01-31 08:26:40,177 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:26:40,184 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-31 08:26:40,236 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:26:40,237 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:26:40,237 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:26:40,237 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:26:40,237 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:26:40,237 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:26:40,237 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:26:40,238 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:26:40,238 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:26:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-31 08:26:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-31 08:26:40,268 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:40,269 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:40,269 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:26:40,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1792082377, now seen corresponding path program 1 times [2018-01-31 08:26:40,279 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:40,280 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:40,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,338 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:40,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:40,412 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:40,554 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 08:26:40,557 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:26:40,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:26:40,560 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:26:40,574 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:26:40,575 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:26:40,577 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2018-01-31 08:26:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:40,701 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-01-31 08:26:40,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:26:40,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-01-31 08:26:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:40,712 INFO L225 Difference]: With dead ends: 58 [2018-01-31 08:26:40,713 INFO L226 Difference]: Without dead ends: 43 [2018-01-31 08:26:40,715 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:26:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-31 08:26:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-01-31 08:26:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-31 08:26:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2018-01-31 08:26:40,842 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 17 [2018-01-31 08:26:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:40,842 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2018-01-31 08:26:40,842 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:26:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2018-01-31 08:26:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-31 08:26:40,844 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:40,844 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:40,844 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:26:40,844 INFO L82 PathProgramCache]: Analyzing trace with hash 187852866, now seen corresponding path program 1 times [2018-01-31 08:26:40,845 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:40,845 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:40,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,846 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:40,846 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:40,890 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:41,257 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 08:26:41,257 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:26:41,258 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-31 08:26:41,259 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-31 08:26:41,260 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-31 08:26:41,260 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:26:41,260 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 8 states. [2018-01-31 08:26:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:41,547 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-01-31 08:26:41,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-31 08:26:41,548 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2018-01-31 08:26:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:41,549 INFO L225 Difference]: With dead ends: 43 [2018-01-31 08:26:41,549 INFO L226 Difference]: Without dead ends: 42 [2018-01-31 08:26:41,550 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-01-31 08:26:41,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-31 08:26:41,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-01-31 08:26:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-31 08:26:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-01-31 08:26:41,557 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 30 [2018-01-31 08:26:41,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:41,558 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-01-31 08:26:41,558 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-31 08:26:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-01-31 08:26:41,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-31 08:26:41,559 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:41,559 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:41,559 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:26:41,560 INFO L82 PathProgramCache]: Analyzing trace with hash 187852867, now seen corresponding path program 1 times [2018-01-31 08:26:41,560 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:41,560 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:41,561 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:41,561 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:41,562 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:41,583 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:41,854 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 08:26:41,855 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:26:41,855 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-31 08:26:41,855 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 08:26:41,856 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 08:26:41,856 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-01-31 08:26:41,856 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 9 states. [2018-01-31 08:26:42,363 WARN L143 SmtUtils]: Spent 160ms on a formula simplification that was a NOOP. DAG size: 19 [2018-01-31 08:26:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:42,487 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-01-31 08:26:42,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-31 08:26:42,487 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-01-31 08:26:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:42,491 INFO L225 Difference]: With dead ends: 55 [2018-01-31 08:26:42,491 INFO L226 Difference]: Without dead ends: 54 [2018-01-31 08:26:42,492 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-01-31 08:26:42,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-01-31 08:26:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-01-31 08:26:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-01-31 08:26:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-01-31 08:26:42,502 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 30 [2018-01-31 08:26:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:42,503 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-01-31 08:26:42,503 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 08:26:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-01-31 08:26:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-31 08:26:42,504 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:42,505 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:42,505 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:26:42,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1013092449, now seen corresponding path program 1 times [2018-01-31 08:26:42,505 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:42,505 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:42,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:42,508 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:42,509 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:42,531 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:42,685 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 08:26:42,685 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:26:42,686 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:26:42,686 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 08:26:42,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 08:26:42,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 08:26:42,687 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 4 states. [2018-01-31 08:26:42,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:42,760 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2018-01-31 08:26:42,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-31 08:26:42,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-01-31 08:26:42,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:42,761 INFO L225 Difference]: With dead ends: 50 [2018-01-31 08:26:42,761 INFO L226 Difference]: Without dead ends: 42 [2018-01-31 08:26:42,762 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-31 08:26:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-31 08:26:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-01-31 08:26:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-01-31 08:26:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-01-31 08:26:42,769 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 33 [2018-01-31 08:26:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:42,769 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-01-31 08:26:42,769 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 08:26:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-01-31 08:26:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-31 08:26:42,770 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:42,771 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:26:42,771 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:26:42,771 INFO L82 PathProgramCache]: Analyzing trace with hash -956960186, now seen corresponding path program 1 times [2018-01-31 08:26:42,771 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:42,771 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:42,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:42,772 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:42,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:42,793 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:43,179 WARN L143 SmtUtils]: Spent 102ms on a formula simplification that was a NOOP. DAG size: 11 [2018-01-31 08:26:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 08:26:43,573 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:43,573 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 08:26:43,589 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:43,636 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:43,704 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-31 08:26:43,706 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 08:26:43,828 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 08:26:43,828 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-31 08:26:44,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 08:26:44,594 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:44,594 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2018-01-31 08:26:44,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-31 08:26:44,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-31 08:26:44,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2018-01-31 08:26:44,596 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 32 states. [2018-01-31 08:26:45,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:45,946 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-01-31 08:26:45,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-31 08:26:45,946 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 39 [2018-01-31 08:26:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:45,947 INFO L225 Difference]: With dead ends: 53 [2018-01-31 08:26:45,948 INFO L226 Difference]: Without dead ends: 52 [2018-01-31 08:26:45,949 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=259, Invalid=2093, Unknown=0, NotChecked=0, Total=2352 [2018-01-31 08:26:45,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-01-31 08:26:45,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-01-31 08:26:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-01-31 08:26:45,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-01-31 08:26:45,956 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 39 [2018-01-31 08:26:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:45,956 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-01-31 08:26:45,956 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-31 08:26:45,957 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-01-31 08:26:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-31 08:26:45,958 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:45,958 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-01-31 08:26:45,958 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:26:45,958 INFO L82 PathProgramCache]: Analyzing trace with hash 174717859, now seen corresponding path program 2 times [2018-01-31 08:26:45,959 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:45,959 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:45,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:45,960 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:26:45,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:45,995 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 08:26:46,565 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:46,565 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:46,570 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-31 08:26:46,586 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:46,596 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-31 08:26:46,598 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:46,602 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:46,612 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-31 08:26:46,613 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 08:26:46,617 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 08:26:46,618 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-31 08:26:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 08:26:47,530 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:47,530 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 42 [2018-01-31 08:26:47,530 INFO L409 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-01-31 08:26:47,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-01-31 08:26:47,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1692, Unknown=0, NotChecked=0, Total=1806 [2018-01-31 08:26:47,532 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 43 states. [2018-01-31 08:26:49,177 WARN L146 SmtUtils]: Spent 142ms on a formula simplification. DAG size of input: 72 DAG size of output 39 [2018-01-31 08:26:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:26:50,228 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2018-01-31 08:26:50,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-31 08:26:50,229 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 48 [2018-01-31 08:26:50,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:26:50,230 INFO L225 Difference]: With dead ends: 71 [2018-01-31 08:26:50,230 INFO L226 Difference]: Without dead ends: 70 [2018-01-31 08:26:50,232 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1148 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=489, Invalid=4913, Unknown=0, NotChecked=0, Total=5402 [2018-01-31 08:26:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-31 08:26:50,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-01-31 08:26:50,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-01-31 08:26:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2018-01-31 08:26:50,241 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 48 [2018-01-31 08:26:50,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:26:50,241 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2018-01-31 08:26:50,241 INFO L433 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-01-31 08:26:50,241 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2018-01-31 08:26:50,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-01-31 08:26:50,243 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:26:50,243 INFO L351 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 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 08:26:50,243 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cbzeroErr0RequiresViolation, cbzeroErr1RequiresViolation, mainErr0EnsuresViolation]=== [2018-01-31 08:26:50,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1072133891, now seen corresponding path program 3 times [2018-01-31 08:26:50,243 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:26:50,243 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:26:50,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:50,244 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-31 08:26:50,245 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:26:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:26:50,299 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:26:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 08:26:51,901 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 08:26:51,901 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-31 08:26:51,907 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-31 08:26:51,923 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:51,943 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:51,954 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:51,957 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:51,961 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-31 08:26:51,967 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-31 08:26:51,972 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 08:26:51,977 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-31 08:26:51,977 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-31 08:26:51,983 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-31 08:26:51,983 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-01-31 08:26:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 08:26:54,054 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-31 08:26:54,055 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 62 [2018-01-31 08:26:54,055 INFO L409 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-01-31 08:26:54,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-01-31 08:26:54,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3741, Unknown=0, NotChecked=0, Total=3906 [2018-01-31 08:26:54,057 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 63 states. [2018-01-31 08:26:58,071 WARN L146 SmtUtils]: Spent 117ms on a formula simplification. DAG size of input: 77 DAG size of output 41 [2018-01-31 08:26:58,841 WARN L146 SmtUtils]: Spent 411ms on a formula simplification. DAG size of input: 72 DAG size of output 46 [2018-01-31 08:26:59,508 WARN L146 SmtUtils]: Spent 123ms on a formula simplification. DAG size of input: 74 DAG size of output 57 [2018-01-31 08:27:00,505 WARN L146 SmtUtils]: Spent 151ms on a formula simplification. DAG size of input: 95 DAG size of output 40 [2018-01-31 08:27:03,641 WARN L146 SmtUtils]: Spent 498ms on a formula simplification. DAG size of input: 78 DAG size of output 42 [2018-01-31 08:27:04,186 WARN L146 SmtUtils]: Spent 125ms on a formula simplification. DAG size of input: 54 DAG size of output 40 [2018-01-31 08:27:04,432 WARN L146 SmtUtils]: Spent 128ms on a formula simplification. DAG size of input: 64 DAG size of output 42 [2018-01-31 08:27:04,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:27:04,537 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2018-01-31 08:27:04,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-01-31 08:27:04,537 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 66 [2018-01-31 08:27:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:27:04,538 INFO L225 Difference]: With dead ends: 79 [2018-01-31 08:27:04,538 INFO L226 Difference]: Without dead ends: 0 [2018-01-31 08:27:04,540 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=863, Invalid=10692, Unknown=1, NotChecked=0, Total=11556 [2018-01-31 08:27:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-31 08:27:04,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-31 08:27:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-31 08:27:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-31 08:27:04,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2018-01-31 08:27:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:27:04,541 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-31 08:27:04,541 INFO L433 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-01-31 08:27:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-31 08:27:04,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-31 08:27:04,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-31 08:27:05,200 WARN L146 SmtUtils]: Spent 490ms on a formula simplification. DAG size of input: 95 DAG size of output 72 [2018-01-31 08:27:05,293 INFO L399 ceAbstractionStarter]: For program point L1(lines 1 560) no Hoare annotation was computed. [2018-01-31 08:27:05,293 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 560) no Hoare annotation was computed. [2018-01-31 08:27:05,293 INFO L395 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 560) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-31 08:27:05,293 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 560) no Hoare annotation was computed. [2018-01-31 08:27:05,293 INFO L402 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 560) the Hoare annotation is: true [2018-01-31 08:27:05,293 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 560) no Hoare annotation was computed. [2018-01-31 08:27:05,293 INFO L402 ceAbstractionStarter]: At program point L1(lines 1 560) the Hoare annotation is: true [2018-01-31 08:27:05,293 INFO L399 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 560) no Hoare annotation was computed. [2018-01-31 08:27:05,293 INFO L399 ceAbstractionStarter]: For program point L544'''(lines 544 545) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point L540(lines 540 546) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point L544''''(line 544) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L402 ceAbstractionStarter]: At program point cbzeroENTRY(lines 540 546) the Hoare annotation is: true [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point L545(line 545) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point L544(line 544) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point L543(line 543) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point L544'(line 544) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point cbzeroErr1RequiresViolation(lines 1 560) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point L545'''(line 545) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point L544''''''''(lines 544 545) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L399 ceAbstractionStarter]: For program point cbzeroEXIT(lines 540 546) no Hoare annotation was computed. [2018-01-31 08:27:05,294 INFO L395 ceAbstractionStarter]: At program point L544'''''''(lines 544 545) the Hoare annotation is: (let ((.cse6 (+ cbzero_~length 1)) (.cse1 (select |#length| cbzero_~b.base))) (let ((.cse0 (= 1 (select |#valid| cbzero_~p~2.base))) (.cse3 (<= |cbzero_#in~length| .cse1)) (.cse8 (+ cbzero_~length 2)) (.cse2 (select |#length| cbzero_~p~2.base)) (.cse9 (not (= 0 (mod .cse6 4294967296)))) (.cse4 (= 0 cbzero_~b.offset)) (.cse7 (<= 0 cbzero_~length)) (.cse5 (= 1 (select |#valid| cbzero_~b.base)))) (or (not (= 0 |cbzero_#in~b.offset|)) (and .cse0 (<= 1 cbzero_~length) (<= cbzero_~length .cse1) (= 0 cbzero_~p~2.offset) (<= cbzero_~length .cse2) .cse3 .cse4 .cse5) (and .cse0 (<= (* 4294967296 (div (+ cbzero_~p~2.offset (+ cbzero_~length (+ (- .cse2) 4294967295))) 4294967296)) cbzero_~length) .cse3 (<= 4 cbzero_~p~2.offset) .cse4 .cse5) (and (<= cbzero_~p~2.offset 1) .cse0 (<= 1 cbzero_~p~2.offset) (<= .cse6 .cse2) .cse3 .cse4 .cse7 .cse5) (< |cbzero_#in~length| 1) (and (<= (+ cbzero_~length 3) .cse2) .cse0 (<= cbzero_~p~2.offset 3) (not (= 0 (mod .cse8 4294967296))) .cse3 (<= 3 cbzero_~p~2.offset) .cse9 .cse4 .cse7 .cse5) (and .cse0 (<= cbzero_~p~2.offset 2) (<= 2 cbzero_~p~2.offset) .cse3 (<= .cse8 .cse2) .cse9 .cse4 .cse7 .cse5) (< (select |#length| |cbzero_#in~b.base|) |cbzero_#in~length|) (not (= (select |#valid| |cbzero_#in~b.base|) 1))))) [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point cbzeroErr0RequiresViolation(lines 1 560) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L544''''''(line 544) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L545''(line 545) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L544''(line 544) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L545'(line 545) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L553'(lines 553 555) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L549(line 549) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L548(line 548) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L557'''(line 557) no Hoare annotation was computed. [2018-01-31 08:27:05,295 INFO L399 ceAbstractionStarter]: For program point L550''(lines 550 552) no Hoare annotation was computed. [2018-01-31 08:27:05,296 INFO L399 ceAbstractionStarter]: For program point L558'(line 558) no Hoare annotation was computed. [2018-01-31 08:27:05,296 INFO L399 ceAbstractionStarter]: For program point L548'(line 548) no Hoare annotation was computed. [2018-01-31 08:27:05,296 INFO L399 ceAbstractionStarter]: For program point L557''(line 557) no Hoare annotation was computed. [2018-01-31 08:27:05,296 INFO L399 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 547 560) no Hoare annotation was computed. [2018-01-31 08:27:05,297 INFO L399 ceAbstractionStarter]: For program point L551(line 551) no Hoare annotation was computed. [2018-01-31 08:27:05,297 INFO L399 ceAbstractionStarter]: For program point L550(lines 550 552) no Hoare annotation was computed. [2018-01-31 08:27:05,297 INFO L399 ceAbstractionStarter]: For program point L557(line 557) no Hoare annotation was computed. [2018-01-31 08:27:05,297 INFO L399 ceAbstractionStarter]: For program point mainFINAL(lines 547 560) no Hoare annotation was computed. [2018-01-31 08:27:05,297 INFO L399 ceAbstractionStarter]: For program point L556(line 556) no Hoare annotation was computed. [2018-01-31 08:27:05,297 INFO L399 ceAbstractionStarter]: For program point L554(line 554) no Hoare annotation was computed. [2018-01-31 08:27:05,298 INFO L395 ceAbstractionStarter]: At program point L558(line 558) the Hoare annotation is: (and (= 0 |main_#t~malloc5.offset|) (<= 1 main_~n~4) (= 1 (select |#valid| main_~nondetArea~4.base)) (= 0 main_~nondetArea~4.offset) (<= main_~n~4 main_~length~4) (<= main_~n~4 (select |#length| main_~nondetArea~4.base)) (= 1 (select |#valid| |main_#t~malloc5.base|)) (<= main_~n~4 (select |#length| |main_#t~malloc5.base|)) (= (store |#valid| |main_#t~malloc5.base| (select (store |#valid| |main_#t~malloc5.base| 0) |main_#t~malloc5.base|)) |old(#valid)|)) [2018-01-31 08:27:05,298 INFO L399 ceAbstractionStarter]: For program point mainEXIT(lines 547 560) no Hoare annotation was computed. [2018-01-31 08:27:05,298 INFO L395 ceAbstractionStarter]: At program point mainENTRY(lines 547 560) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-31 08:27:05,298 INFO L399 ceAbstractionStarter]: For program point L557'(line 557) no Hoare annotation was computed. [2018-01-31 08:27:05,298 INFO L399 ceAbstractionStarter]: For program point L549''(line 549) no Hoare annotation was computed. [2018-01-31 08:27:05,298 INFO L399 ceAbstractionStarter]: For program point L549'(line 549) no Hoare annotation was computed. [2018-01-31 08:27:05,312 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,315 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,315 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,315 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,315 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,316 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,316 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,316 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,317 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,317 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,317 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,317 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,330 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,330 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,331 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,331 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,331 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,332 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,332 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,332 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,332 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,333 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,333 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,333 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:27:05 BoogieIcfgContainer [2018-01-31 08:27:05,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 08:27:05,337 INFO L168 Benchmark]: Toolchain (without parser) took 25979.46 ms. Allocated memory was 307.2 MB in the beginning and 595.1 MB in the end (delta: 287.8 MB). Free memory was 267.0 MB in the beginning and 439.1 MB in the end (delta: -172.2 MB). Peak memory consumption was 115.7 MB. Max. memory is 5.3 GB. [2018-01-31 08:27:05,338 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:27:05,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.27 ms. Allocated memory is still 307.2 MB. Free memory was 266.0 MB in the beginning and 255.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-31 08:27:05,339 INFO L168 Benchmark]: Boogie Preprocessor took 32.61 ms. Allocated memory is still 307.2 MB. Free memory was 255.8 MB in the beginning and 254.8 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-31 08:27:05,339 INFO L168 Benchmark]: RCFGBuilder took 504.09 ms. Allocated memory is still 307.2 MB. Free memory was 254.8 MB in the beginning and 237.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-31 08:27:05,339 INFO L168 Benchmark]: TraceAbstraction took 25177.45 ms. Allocated memory was 307.2 MB in the beginning and 595.1 MB in the end (delta: 287.8 MB). Free memory was 237.8 MB in the beginning and 439.1 MB in the end (delta: -201.3 MB). Peak memory consumption was 86.5 MB. Max. memory is 5.3 GB. [2018-01-31 08:27:05,341 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 252.27 ms. Allocated memory is still 307.2 MB. Free memory was 266.0 MB in the beginning and 255.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.61 ms. Allocated memory is still 307.2 MB. Free memory was 255.8 MB in the beginning and 254.8 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 504.09 ms. Allocated memory is still 307.2 MB. Free memory was 254.8 MB in the beginning and 237.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 25177.45 ms. Allocated memory was 307.2 MB in the beginning and 595.1 MB in the end (delta: 287.8 MB). Free memory was 237.8 MB in the beginning and 439.1 MB in the end (delta: -201.3 MB). Peak memory consumption was 86.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 547]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 544]: Loop Invariant [2018-01-31 08:27:05,348 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,348 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,349 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,349 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,349 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,349 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,350 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,350 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,350 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,350 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,351 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,351 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,354 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,354 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,355 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,355 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,355 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,355 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,356 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,356 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,356 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,356 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,356 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length [2018-01-31 08:27:05,357 WARN L1215 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (((((((!(0 == b) || (((((((1 == \valid[p] && 1 <= length) && length <= unknown-#length-unknown[b]) && 0 == p) && length <= unknown-#length-unknown[p]) && \old(length) <= unknown-#length-unknown[b]) && 0 == b) && 1 == \valid[b])) || (((((1 == \valid[p] && 4294967296 * ((p + (length + (-unknown-#length-unknown[p] + 4294967295))) / 4294967296) <= length) && \old(length) <= unknown-#length-unknown[b]) && 4 <= p) && 0 == b) && 1 == \valid[b])) || (((((((p <= 1 && 1 == \valid[p]) && 1 <= p) && length + 1 <= unknown-#length-unknown[p]) && \old(length) <= unknown-#length-unknown[b]) && 0 == b) && 0 <= length) && 1 == \valid[b])) || \old(length) < 1) || (((((((((length + 3 <= unknown-#length-unknown[p] && 1 == \valid[p]) && p <= 3) && !(0 == (length + 2) % 4294967296)) && \old(length) <= unknown-#length-unknown[b]) && 3 <= p) && !(0 == (length + 1) % 4294967296)) && 0 == b) && 0 <= length) && 1 == \valid[b])) || ((((((((1 == \valid[p] && p <= 2) && 2 <= p) && \old(length) <= unknown-#length-unknown[b]) && length + 2 <= unknown-#length-unknown[p]) && !(0 == (length + 1) % 4294967296)) && 0 == b) && 0 <= length) && 1 == \valid[b])) || unknown-#length-unknown[b] < \old(length)) || !(\valid[b] == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 47 locations, 3 error locations. SAFE Result, 25.0s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 15.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 240 SDtfs, 678 SDslu, 2673 SDs, 0 SdLazy, 2685 SolverSat, 170 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 349 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4208 ImplicationChecksByTransitivity, 17.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=6, 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, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 12 NumberOfFragments, 276 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 341 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 416 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 406 ConstructedInterpolants, 12 QuantifiedInterpolants, 244221 SizeOfPredicates, 78 NumberOfNonLiveVariables, 405 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 21/238 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_08-27-05-362.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cbzero-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_08-27-05-362.csv Received shutdown request...