java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/list-ext-properties/960521-1_1_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e [2018-01-31 09:04:43,633 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 09:04:43,635 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 09:04:43,662 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 09:04:43,662 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 09:04:43,663 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 09:04:43,664 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 09:04:43,666 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 09:04:43,669 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 09:04:43,669 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 09:04:43,670 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 09:04:43,670 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 09:04:43,672 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 09:04:43,673 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 09:04:43,674 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 09:04:43,676 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 09:04:43,678 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 09:04:43,680 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 09:04:43,682 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 09:04:43,683 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 09:04:43,685 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 09:04:43,691 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 09:04:43,691 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 09:04:43,692 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 09:04:43,710 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 09:04:43,711 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 09:04:43,712 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 09:04:43,712 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 09:04:43,713 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 09:04:43,713 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 09:04:43,713 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 09:04:43,714 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 09:04:43,714 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 09:04:43,714 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 09:04:43,714 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 09:04:43,714 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 09:04:43,715 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 09:04:43,715 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 09:04:43,715 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 09:04:43,715 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 09:04:43,715 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 09:04:43,715 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 09:04:43,716 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 09:04:43,716 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 09:04:43,716 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 09:04:43,716 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 09:04:43,716 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 09:04:43,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:04:43,716 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 09:04:43,716 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 09:04:43,716 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 09:04:43,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 09:04:43,717 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 09:04:43,717 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 09:04:43,717 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 09:04:43,719 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 09:04:43,720 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 09:04:43,720 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 09:04:43,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 09:04:43,775 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 09:04:43,782 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 09:04:43,784 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 09:04:43,784 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 09:04:43,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/960521-1_1_false-valid-deref.i [2018-01-31 09:04:43,998 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 09:04:44,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 09:04:44,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 09:04:44,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 09:04:44,017 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 09:04:44,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:04:43" (1/1) ... [2018-01-31 09:04:44,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6298bd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44, skipping insertion in model container [2018-01-31 09:04:44,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:04:43" (1/1) ... [2018-01-31 09:04:44,042 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:04:44,104 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 09:04:44,278 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:04:44,308 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 09:04:44,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44 WrapperNode [2018-01-31 09:04:44,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 09:04:44,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 09:04:44,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 09:04:44,319 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 09:04:44,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (1/1) ... [2018-01-31 09:04:44,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (1/1) ... [2018-01-31 09:04:44,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (1/1) ... [2018-01-31 09:04:44,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (1/1) ... [2018-01-31 09:04:44,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (1/1) ... [2018-01-31 09:04:44,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (1/1) ... [2018-01-31 09:04:44,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (1/1) ... [2018-01-31 09:04:44,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 09:04:44,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 09:04:44,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 09:04:44,364 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 09:04:44,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 09:04:44,432 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 09:04:44,432 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 09:04:44,432 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-31 09:04:44,433 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 09:04:44,433 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 09:04:44,433 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 09:04:44,433 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 09:04:44,433 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 09:04:44,433 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 09:04:44,433 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-31 09:04:44,433 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-31 09:04:44,433 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 09:04:44,434 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-31 09:04:44,434 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 09:04:44,434 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 09:04:44,434 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 09:04:45,016 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 09:04:45,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:04:45 BoogieIcfgContainer [2018-01-31 09:04:45,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 09:04:45,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 09:04:45,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 09:04:45,061 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 09:04:45,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:04:43" (1/3) ... [2018-01-31 09:04:45,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d96aae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:04:45, skipping insertion in model container [2018-01-31 09:04:45,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:04:44" (2/3) ... [2018-01-31 09:04:45,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d96aae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:04:45, skipping insertion in model container [2018-01-31 09:04:45,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:04:45" (3/3) ... [2018-01-31 09:04:45,065 INFO L107 eAbstractionObserver]: Analyzing ICFG 960521-1_1_false-valid-deref.i [2018-01-31 09:04:45,072 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 09:04:45,080 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-01-31 09:04:45,125 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 09:04:45,125 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 09:04:45,126 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 09:04:45,126 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 09:04:45,126 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 09:04:45,126 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 09:04:45,126 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 09:04:45,126 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 09:04:45,127 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 09:04:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2018-01-31 09:04:45,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-31 09:04:45,157 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:45,157 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:45,158 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:45,161 INFO L82 PathProgramCache]: Analyzing trace with hash -407048758, now seen corresponding path program 1 times [2018-01-31 09:04:45,163 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:45,164 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:45,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:45,218 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:45,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:45,297 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:45,348 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 09:04:45,351 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:45,351 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 09:04:45,353 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 09:04:45,367 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 09:04:45,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:04:45,371 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 2 states. [2018-01-31 09:04:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:45,408 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2018-01-31 09:04:45,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 09:04:45,410 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-31 09:04:45,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:45,421 INFO L225 Difference]: With dead ends: 130 [2018-01-31 09:04:45,421 INFO L226 Difference]: Without dead ends: 71 [2018-01-31 09:04:45,427 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 09:04:45,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-31 09:04:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-01-31 09:04:45,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-31 09:04:45,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2018-01-31 09:04:45,626 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 18 [2018-01-31 09:04:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:45,626 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2018-01-31 09:04:45,626 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 09:04:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2018-01-31 09:04:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-31 09:04:45,628 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:45,628 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 09:04:45,629 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:45,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1533652828, now seen corresponding path program 1 times [2018-01-31 09:04:45,629 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:45,629 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:45,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:45,631 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:45,631 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:45,670 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:45,873 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 09:04:45,873 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:45,873 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-31 09:04:45,874 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-31 09:04:45,874 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-31 09:04:45,874 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-31 09:04:45,875 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 5 states. [2018-01-31 09:04:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:46,304 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2018-01-31 09:04:46,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 09:04:46,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-01-31 09:04:46,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:46,306 INFO L225 Difference]: With dead ends: 71 [2018-01-31 09:04:46,307 INFO L226 Difference]: Without dead ends: 68 [2018-01-31 09:04:46,308 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:04:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-01-31 09:04:46,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-01-31 09:04:46,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-31 09:04:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2018-01-31 09:04:46,316 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 21 [2018-01-31 09:04:46,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:46,317 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2018-01-31 09:04:46,317 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-31 09:04:46,317 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2018-01-31 09:04:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-31 09:04:46,318 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:46,318 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 09:04:46,319 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1533652827, now seen corresponding path program 1 times [2018-01-31 09:04:46,319 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:46,319 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:46,320 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:46,320 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:46,321 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:46,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:46,505 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 09:04:46,505 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:46,505 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-31 09:04:46,506 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 09:04:46,506 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 09:04:46,506 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-31 09:04:46,507 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 6 states. [2018-01-31 09:04:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:47,045 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2018-01-31 09:04:47,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:04:47,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-31 09:04:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:47,047 INFO L225 Difference]: With dead ends: 125 [2018-01-31 09:04:47,047 INFO L226 Difference]: Without dead ends: 124 [2018-01-31 09:04:47,048 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-31 09:04:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-31 09:04:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 79. [2018-01-31 09:04:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-01-31 09:04:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2018-01-31 09:04:47,059 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 21 [2018-01-31 09:04:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:47,059 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2018-01-31 09:04:47,059 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 09:04:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2018-01-31 09:04:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-31 09:04:47,060 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:47,060 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] [2018-01-31 09:04:47,061 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:47,061 INFO L82 PathProgramCache]: Analyzing trace with hash -260541751, now seen corresponding path program 1 times [2018-01-31 09:04:47,061 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:47,061 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:47,062 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:47,062 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:47,062 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:47,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:47,312 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 09:04:47,312 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:47,312 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 09:04:47,312 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-31 09:04:47,313 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-31 09:04:47,313 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-31 09:04:47,313 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 4 states. [2018-01-31 09:04:47,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:47,386 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2018-01-31 09:04:47,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-31 09:04:47,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-01-31 09:04:47,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:47,388 INFO L225 Difference]: With dead ends: 79 [2018-01-31 09:04:47,388 INFO L226 Difference]: Without dead ends: 76 [2018-01-31 09:04:47,388 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 09:04:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-31 09:04:47,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-01-31 09:04:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-31 09:04:47,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2018-01-31 09:04:47,396 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 28 [2018-01-31 09:04:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:47,397 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2018-01-31 09:04:47,397 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-31 09:04:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2018-01-31 09:04:47,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-31 09:04:47,398 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:47,398 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] [2018-01-31 09:04:47,398 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:47,399 INFO L82 PathProgramCache]: Analyzing trace with hash -260541750, now seen corresponding path program 1 times [2018-01-31 09:04:47,399 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:47,399 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:47,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:47,400 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:47,401 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:47,420 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:47,617 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 09:04:47,617 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:47,618 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-31 09:04:47,618 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-31 09:04:47,618 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-31 09:04:47,618 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-01-31 09:04:47,619 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 7 states. [2018-01-31 09:04:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:47,976 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2018-01-31 09:04:47,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-31 09:04:47,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-31 09:04:47,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:47,981 INFO L225 Difference]: With dead ends: 158 [2018-01-31 09:04:47,981 INFO L226 Difference]: Without dead ends: 129 [2018-01-31 09:04:47,982 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:04:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-31 09:04:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 104. [2018-01-31 09:04:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-01-31 09:04:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2018-01-31 09:04:48,008 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 28 [2018-01-31 09:04:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:48,009 INFO L432 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2018-01-31 09:04:48,009 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-31 09:04:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2018-01-31 09:04:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-31 09:04:48,010 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:48,010 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:48,010 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:48,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2034907374, now seen corresponding path program 1 times [2018-01-31 09:04:48,011 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:48,011 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:48,016 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:48,016 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:48,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:48,055 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:48,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:48,199 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:48,199 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-31 09:04:48,199 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-31 09:04:48,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-31 09:04:48,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-31 09:04:48,200 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand 8 states. [2018-01-31 09:04:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:48,755 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2018-01-31 09:04:48,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-31 09:04:48,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2018-01-31 09:04:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:48,756 INFO L225 Difference]: With dead ends: 119 [2018-01-31 09:04:48,756 INFO L226 Difference]: Without dead ends: 118 [2018-01-31 09:04:48,757 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-01-31 09:04:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-31 09:04:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2018-01-31 09:04:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-01-31 09:04:48,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2018-01-31 09:04:48,768 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 28 [2018-01-31 09:04:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:48,769 INFO L432 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2018-01-31 09:04:48,769 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-31 09:04:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2018-01-31 09:04:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-31 09:04:48,770 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:48,770 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:48,770 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:48,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1244682560, now seen corresponding path program 1 times [2018-01-31 09:04:48,771 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:48,771 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:48,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:48,772 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:48,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:48,787 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:48,875 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-31 09:04:48,875 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 09:04:48,881 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:48,913 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-31 09:04:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:49,042 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-31 09:04:49,042 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2018-01-31 09:04:49,042 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:04:49,043 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:04:49,043 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:04:49,043 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand 9 states. [2018-01-31 09:04:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:49,292 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2018-01-31 09:04:49,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-31 09:04:49,293 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-01-31 09:04:49,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:49,295 INFO L225 Difference]: With dead ends: 144 [2018-01-31 09:04:49,295 INFO L226 Difference]: Without dead ends: 111 [2018-01-31 09:04:49,295 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-01-31 09:04:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-01-31 09:04:49,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2018-01-31 09:04:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-31 09:04:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2018-01-31 09:04:49,305 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 34 [2018-01-31 09:04:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:49,305 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2018-01-31 09:04:49,305 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:04:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2018-01-31 09:04:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-31 09:04:49,307 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:49,307 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:49,307 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:49,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1404742047, now seen corresponding path program 1 times [2018-01-31 09:04:49,307 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:49,307 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:49,308 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:49,308 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:49,309 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 09:04:49,336 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 09:04:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-31 09:04:49,585 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 09:04:49,585 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-31 09:04:49,586 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-31 09:04:49,586 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-31 09:04:49,586 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-31 09:04:49,586 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand 9 states. [2018-01-31 09:04:49,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 09:04:49,839 INFO L93 Difference]: Finished difference Result 149 states and 158 transitions. [2018-01-31 09:04:49,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-31 09:04:49,839 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-01-31 09:04:49,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 09:04:49,840 INFO L225 Difference]: With dead ends: 149 [2018-01-31 09:04:49,840 INFO L226 Difference]: Without dead ends: 120 [2018-01-31 09:04:49,840 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-01-31 09:04:49,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-31 09:04:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2018-01-31 09:04:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-01-31 09:04:49,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2018-01-31 09:04:49,857 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 35 [2018-01-31 09:04:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 09:04:49,857 INFO L432 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2018-01-31 09:04:49,857 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-31 09:04:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2018-01-31 09:04:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-31 09:04:49,859 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 09:04:49,859 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 09:04:49,859 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr5RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr12EnsuresViolation]=== [2018-01-31 09:04:49,859 INFO L82 PathProgramCache]: Analyzing trace with hash -985011355, now seen corresponding path program 1 times [2018-01-31 09:04:49,859 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 09:04:49,860 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 09:04:49,861 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:49,861 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 09:04:49,861 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 09:04:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 09:04:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 09:04:49,926 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-01-31 09:04:50,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:04:50 BoogieIcfgContainer [2018-01-31 09:04:50,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 09:04:50,013 INFO L168 Benchmark]: Toolchain (without parser) took 6015.14 ms. Allocated memory was 305.7 MB in the beginning and 505.4 MB in the end (delta: 199.8 MB). Free memory was 264.6 MB in the beginning and 461.1 MB in the end (delta: -196.5 MB). Peak memory consumption was 3.2 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:50,016 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 305.7 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:04:50,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.59 ms. Allocated memory is still 305.7 MB. Free memory was 264.6 MB in the beginning and 254.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:50,017 INFO L168 Benchmark]: Boogie Preprocessor took 45.64 ms. Allocated memory is still 305.7 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:50,043 INFO L168 Benchmark]: RCFGBuilder took 691.36 ms. Allocated memory is still 305.7 MB. Free memory was 252.6 MB in the beginning and 231.7 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 5.3 GB. [2018-01-31 09:04:50,044 INFO L168 Benchmark]: TraceAbstraction took 4956.65 ms. Allocated memory was 305.7 MB in the beginning and 505.4 MB in the end (delta: 199.8 MB). Free memory was 231.7 MB in the beginning and 461.1 MB in the end (delta: -229.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 09:04:50,046 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 305.7 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 310.59 ms. Allocated memory is still 305.7 MB. Free memory was 264.6 MB in the beginning and 254.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 45.64 ms. Allocated memory is still 305.7 MB. Free memory was 254.6 MB in the beginning and 252.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 691.36 ms. Allocated memory is still 305.7 MB. Free memory was 252.6 MB in the beginning and 231.7 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4956.65 ms. Allocated memory was 305.7 MB in the beginning and 505.4 MB in the end (delta: 199.8 MB). Free memory was 231.7 MB in the beginning and 461.1 MB in the end (delta: -229.4 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: IVAL [\old(a)=13, \old(a)=10, \old(b)=9, \old(b)=8, \old(n)=11, a={10:13}, b={8:9}, n=11] [L619] int *a, *b; VAL [\old(a)=10, \old(a)=13, \old(b)=9, \old(b)=8, \old(n)=11, a={0:0}, b={0:0}, n=11] [L620] int n; VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={0:0}, b={0:0}, n=0] [L632] n = 1 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={0:0}, b={0:0}, n=1] [L633] COND FALSE !(__VERIFIER_nondet_int() && n < 30) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, __VERIFIER_nondet_int()=0, a={0:0}, b={0:0}, n=1] [L636] EXPR, FCALL malloc(n * sizeof(*a)) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={0:0}, b={0:0}, malloc(n * sizeof(*a))={7:0}, n=1] [L636] a = malloc(n * sizeof(*a)) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={0:0}, malloc(n * sizeof(*a))={7:0}, n=1] [L637] EXPR, FCALL malloc(n * sizeof(*b)) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={0:0}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={5:0}, n=1] [L637] b = malloc(n * sizeof(*b)) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:0}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={5:0}, n=1] [L638] EXPR b++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, b++={5:0}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={5:0}, n=1] [L638] FCALL *b++ = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, b++={5:0}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={5:0}, n=1] [L639] CALL foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, n=1] [L624] int i; VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, n=1] [L625] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, i=0, n=1] [L625] COND TRUE i < n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, i=0, n=1] [L626] FCALL a[i] = n VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, i=0, n=1] [L625] i++ VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, i=1, n=1] [L625] COND FALSE !(i < n) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, i=1, n=1] [L627] i = 0 VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, i=0, n=1] [L627] COND FALSE, RET !(i < n - 1) VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, i=0, n=1] [L639] foo() VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={5:0}, n=1] [L640] FCALL b[-2] VAL [\old(a)=0, \old(a)=0, \old(b)=0, \old(b)=0, \old(n)=0, a={7:0}, b={5:4}, malloc(n * sizeof(*a))={7:0}, malloc(n * sizeof(*b))={5:0}, n=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 17 error locations. UNSAFE Result, 4.8s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 518 SDtfs, 628 SDslu, 1272 SDs, 0 SdLazy, 803 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=5, 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 123 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 286 NumberOfCodeBlocks, 286 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 27265 SizeOfPredicates, 4 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_1_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_09-04-50-055.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_1_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_09-04-50-055.csv Received shutdown request...