java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-5f7ec6e [2018-01-31 08:36:13,459 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 08:36:13,461 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 08:36:13,483 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 08:36:13,483 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 08:36:13,484 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 08:36:13,485 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 08:36:13,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 08:36:13,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 08:36:13,499 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 08:36:13,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 08:36:13,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 08:36:13,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 08:36:13,502 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 08:36:13,503 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 08:36:13,507 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 08:36:13,509 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 08:36:13,515 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 08:36:13,516 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 08:36:13,517 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 08:36:13,520 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-31 08:36:13,520 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-31 08:36:13,521 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-31 08:36:13,521 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-31 08:36:13,524 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-31 08:36:13,525 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-31 08:36:13,525 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-31 08:36:13,526 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-31 08:36:13,526 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-31 08:36:13,526 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-31 08:36:13,527 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-31 08:36:13,528 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 08:36:13,541 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 08:36:13,541 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 08:36:13,542 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 08:36:13,542 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 08:36:13,542 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 08:36:13,542 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 08:36:13,542 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 08:36:13,543 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 08:36:13,543 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 08:36:13,543 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 08:36:13,544 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 08:36:13,544 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 08:36:13,545 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 08:36:13,545 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-31 08:36:13,545 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-31 08:36:13,545 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-31 08:36:13,545 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 08:36:13,546 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 08:36:13,546 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 08:36:13,546 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-31 08:36:13,546 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 08:36:13,546 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 08:36:13,546 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 08:36:13,547 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:36:13,547 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 08:36:13,547 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 08:36:13,547 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 08:36:13,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 08:36:13,547 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 08:36:13,548 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 08:36:13,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 08:36:13,549 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 08:36:13,550 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 08:36:13,550 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 08:36:13,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 08:36:13,619 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 08:36:13,623 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 08:36:13,625 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 08:36:13,625 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 08:36:13,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-read.c [2018-01-31 08:36:13,780 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 08:36:13,791 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 08:36:13,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 08:36:13,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 08:36:13,799 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 08:36:13,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:36:13" (1/1) ... [2018-01-31 08:36:13,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3117fa78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:13, skipping insertion in model container [2018-01-31 08:36:13,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 08:36:13" (1/1) ... [2018-01-31 08:36:13,823 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:36:13,843 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 08:36:13,982 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:36:14,004 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 08:36:14,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14 WrapperNode [2018-01-31 08:36:14,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 08:36:14,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 08:36:14,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 08:36:14,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 08:36:14,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (1/1) ... [2018-01-31 08:36:14,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (1/1) ... [2018-01-31 08:36:14,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (1/1) ... [2018-01-31 08:36:14,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (1/1) ... [2018-01-31 08:36:14,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (1/1) ... [2018-01-31 08:36:14,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (1/1) ... [2018-01-31 08:36:14,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (1/1) ... [2018-01-31 08:36:14,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 08:36:14,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 08:36:14,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 08:36:14,069 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 08:36:14,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 08:36:14,132 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 08:36:14,133 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 08:36:14,133 INFO L136 BoogieDeclarations]: Found implementation of procedure bar [2018-01-31 08:36:14,133 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-31 08:36:14,133 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 08:36:14,133 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 08:36:14,133 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 08:36:14,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 08:36:14,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 08:36:14,134 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 08:36:14,134 INFO L128 BoogieDeclarations]: Found specification of procedure bar [2018-01-31 08:36:14,134 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-31 08:36:14,134 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 08:36:14,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 08:36:14,135 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 08:36:14,671 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 08:36:14,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:36:14 BoogieIcfgContainer [2018-01-31 08:36:14,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 08:36:14,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-31 08:36:14,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-31 08:36:14,679 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-31 08:36:14,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 08:36:13" (1/3) ... [2018-01-31 08:36:14,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0b365d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:36:14, skipping insertion in model container [2018-01-31 08:36:14,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 08:36:14" (2/3) ... [2018-01-31 08:36:14,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0b365d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 08:36:14, skipping insertion in model container [2018-01-31 08:36:14,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 08:36:14" (3/3) ... [2018-01-31 08:36:14,683 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-read.c [2018-01-31 08:36:14,692 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-31 08:36:14,702 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-01-31 08:36:14,750 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-31 08:36:14,750 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-31 08:36:14,750 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-31 08:36:14,750 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-31 08:36:14,751 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-31 08:36:14,751 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-31 08:36:14,751 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-31 08:36:14,751 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-31 08:36:14,751 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-31 08:36:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2018-01-31 08:36:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-31 08:36:14,771 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:36:14,772 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:36:14,772 INFO L371 AbstractCegarLoop]: === Iteration 1 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 08:36:14,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1517835154, now seen corresponding path program 1 times [2018-01-31 08:36:14,778 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:36:14,778 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:36:14,838 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:14,839 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:36:14,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:36:14,895 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:36:14,926 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 08:36:14,927 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:36:14,928 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-31 08:36:14,930 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-31 08:36:14,943 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-31 08:36:14,943 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-31 08:36:14,945 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 2 states. [2018-01-31 08:36:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:36:14,971 INFO L93 Difference]: Finished difference Result 169 states and 189 transitions. [2018-01-31 08:36:14,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-31 08:36:14,972 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-01-31 08:36:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:36:14,983 INFO L225 Difference]: With dead ends: 169 [2018-01-31 08:36:14,983 INFO L226 Difference]: Without dead ends: 86 [2018-01-31 08:36:14,992 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 08:36:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-31 08:36:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-01-31 08:36:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-01-31 08:36:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2018-01-31 08:36:15,034 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 14 [2018-01-31 08:36:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:36:15,034 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2018-01-31 08:36:15,035 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-31 08:36:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2018-01-31 08:36:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-31 08:36:15,036 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:36:15,036 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-31 08:36:15,036 INFO L371 AbstractCegarLoop]: === Iteration 2 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 08:36:15,037 INFO L82 PathProgramCache]: Analyzing trace with hash -693346302, now seen corresponding path program 1 times [2018-01-31 08:36:15,037 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:36:15,037 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:36:15,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:15,039 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:36:15,039 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:36:15,056 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:36:15,236 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 08:36:15,237 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:36:15,251 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-31 08:36:15,253 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-31 08:36:15,253 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-31 08:36:15,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-31 08:36:15,254 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 3 states. [2018-01-31 08:36:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:36:15,411 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-31 08:36:15,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-31 08:36:15,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-01-31 08:36:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:36:15,416 INFO L225 Difference]: With dead ends: 110 [2018-01-31 08:36:15,416 INFO L226 Difference]: Without dead ends: 93 [2018-01-31 08:36:15,417 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 08:36:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-31 08:36:15,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2018-01-31 08:36:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-01-31 08:36:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2018-01-31 08:36:15,431 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 15 [2018-01-31 08:36:15,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:36:15,432 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2018-01-31 08:36:15,432 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-31 08:36:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2018-01-31 08:36:15,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-31 08:36:15,433 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:36:15,433 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 08:36:15,433 INFO L371 AbstractCegarLoop]: === Iteration 3 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 08:36:15,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1457275385, now seen corresponding path program 1 times [2018-01-31 08:36:15,434 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:36:15,434 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:36:15,435 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:15,435 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:36:15,435 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-31 08:36:15,459 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-31 08:36:15,628 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 08:36:15,628 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-31 08:36:15,628 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-31 08:36:15,629 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-31 08:36:15,629 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-31 08:36:15,629 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-31 08:36:15,629 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 6 states. [2018-01-31 08:36:15,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-31 08:36:15,961 INFO L93 Difference]: Finished difference Result 188 states and 200 transitions. [2018-01-31 08:36:15,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-31 08:36:15,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-31 08:36:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-31 08:36:15,963 INFO L225 Difference]: With dead ends: 188 [2018-01-31 08:36:15,963 INFO L226 Difference]: Without dead ends: 114 [2018-01-31 08:36:15,964 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-31 08:36:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-31 08:36:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2018-01-31 08:36:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-31 08:36:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2018-01-31 08:36:15,987 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 21 [2018-01-31 08:36:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-31 08:36:15,991 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2018-01-31 08:36:15,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-31 08:36:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2018-01-31 08:36:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-31 08:36:15,993 INFO L343 BasicCegarLoop]: Found error trace [2018-01-31 08:36:15,993 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] [2018-01-31 08:36:15,993 INFO L371 AbstractCegarLoop]: === Iteration 4 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-01-31 08:36:15,993 INFO L82 PathProgramCache]: Analyzing trace with hash 80098363, now seen corresponding path program 1 times [2018-01-31 08:36:15,993 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-31 08:36:15,994 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-31 08:36:15,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:15,995 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-31 08:36:15,996 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-31 08:36:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 08:36:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-31 08:36:16,085 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-01-31 08:36:16,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 08:36:16 BoogieIcfgContainer [2018-01-31 08:36:16,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-31 08:36:16,118 INFO L168 Benchmark]: Toolchain (without parser) took 2336.98 ms. Allocated memory was 308.3 MB in the beginning and 472.9 MB in the end (delta: 164.6 MB). Free memory was 269.0 MB in the beginning and 411.6 MB in the end (delta: -142.6 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. [2018-01-31 08:36:16,120 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 308.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:36:16,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.06 ms. Allocated memory is still 308.3 MB. Free memory was 268.0 MB in the beginning and 259.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. [2018-01-31 08:36:16,120 INFO L168 Benchmark]: Boogie Preprocessor took 53.13 ms. Allocated memory is still 308.3 MB. Free memory was 259.8 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-31 08:36:16,121 INFO L168 Benchmark]: RCFGBuilder took 603.14 ms. Allocated memory is still 308.3 MB. Free memory was 257.7 MB in the beginning and 235.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. [2018-01-31 08:36:16,121 INFO L168 Benchmark]: TraceAbstraction took 1441.86 ms. Allocated memory was 308.3 MB in the beginning and 472.9 MB in the end (delta: 164.6 MB). Free memory was 235.7 MB in the beginning and 411.6 MB in the end (delta: -175.9 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 08:36:16,129 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 308.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 223.06 ms. Allocated memory is still 308.3 MB. Free memory was 268.0 MB in the beginning and 259.8 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 53.13 ms. Allocated memory is still 308.3 MB. Free memory was 259.8 MB in the beginning and 257.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 603.14 ms. Allocated memory is still 308.3 MB. Free memory was 257.7 MB in the beginning and 235.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1441.86 ms. Allocated memory was 308.3 MB in the beginning and 472.9 MB in the end (delta: 164.6 MB). Free memory was 235.7 MB in the beginning and 411.6 MB in the end (delta: -175.9 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: [L32] int i, b[100]; VAL [b={402:0}] [L33] i = 0 VAL [b={402:0}, i=0] [L33] COND TRUE i < 100 VAL [b={402:0}, i=0] [L34] CALL foo(i, b, i) VAL [\old(n)=0, \old(size)=0, b={402:0}] [L21] FCALL int a[n], i; VAL [\old(n)=0, \old(size)=0, a={403:0}, b={402:0}, b={402:0}, n=0, size=0] [L22] i = 0 VAL [\old(n)=0, \old(size)=0, a={403:0}, b={402:0}, b={402:0}, i=0, n=0, size=0] [L22] COND FALSE !(i < size) VAL [\old(n)=0, \old(size)=0, a={403:0}, b={402:0}, b={402:0}, i=0, n=0, size=0] [L25] CALL bar(a, size + 1) VAL [\old(size)=1, b={403:0}] [L12] int res = 0, i; VAL [\old(size)=1, b={403:0}, b={403:0}, res=0, size=1] [L13] i = 0 VAL [\old(size)=1, b={403:0}, b={403:0}, i=0, res=0, size=1] [L13] COND TRUE i < size VAL [\old(size)=1, b={403:0}, b={403:0}, i=0, res=0, size=1] [L14] FCALL b[i] VAL [\old(size)=1, b={403:0}, b={403:0}, i=0, res=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 89 locations, 11 error locations. UNSAFE Result, 1.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 248 SDtfs, 85 SDslu, 278 SDs, 0 SdLazy, 69 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=3, 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, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 1421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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/ArraysOfVariableLength2_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-31_08-36-16-143.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-read.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-31_08-36-16-143.csv Received shutdown request...