java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/relax_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 21:18:44,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 21:18:44,955 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 21:18:44,967 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 21:18:44,968 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 21:18:44,969 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 21:18:44,970 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 21:18:44,971 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 21:18:44,974 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 21:18:44,974 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 21:18:44,975 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 21:18:44,975 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 21:18:44,976 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 21:18:44,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 21:18:44,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 21:18:44,979 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 21:18:44,981 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 21:18:44,983 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 21:18:44,984 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 21:18:44,986 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 21:18:44,988 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-28 21:18:44,988 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-28 21:18:44,989 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-28 21:18:44,989 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-28 21:18:44,990 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-28 21:18:44,992 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-28 21:18:44,992 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-28 21:18:44,992 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-28 21:18:44,993 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-28 21:18:44,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 21:18:44,993 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 21:18:44,994 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-28 21:18:45,003 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 21:18:45,003 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 21:18:45,004 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 21:18:45,004 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 21:18:45,005 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 21:18:45,005 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 21:18:45,005 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 21:18:45,006 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 21:18:45,006 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 21:18:45,006 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 21:18:45,006 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 21:18:45,006 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 21:18:45,007 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 21:18:45,007 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 21:18:45,007 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 21:18:45,007 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 21:18:45,007 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 21:18:45,007 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 21:18:45,008 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 21:18:45,008 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 21:18:45,008 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 21:18:45,008 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 21:18:45,008 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 21:18:45,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 21:18:45,009 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 21:18:45,009 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 21:18:45,009 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 21:18:45,009 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 21:18:45,010 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 21:18:45,010 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 21:18:45,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 21:18:45,010 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 21:18:45,011 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 21:18:45,011 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 21:18:45,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 21:18:45,057 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 21:18:45,061 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 21:18:45,063 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 21:18:45,063 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 21:18:45,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/relax_false-valid-deref.i [2018-01-28 21:18:45,244 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 21:18:45,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 21:18:45,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 21:18:45,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 21:18:45,255 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 21:18:45,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4d4da0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45, skipping insertion in model container [2018-01-28 21:18:45,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,278 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 21:18:45,316 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 21:18:45,430 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 21:18:45,450 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 21:18:45,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45 WrapperNode [2018-01-28 21:18:45,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 21:18:45,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 21:18:45,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 21:18:45,462 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 21:18:45,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (1/1) ... [2018-01-28 21:18:45,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 21:18:45,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 21:18:45,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 21:18:45,499 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 21:18:45,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 21:18:45,542 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 21:18:45,542 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 21:18:45,542 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-28 21:18:45,543 INFO L136 BoogieDeclarations]: Found implementation of procedure is_relaxed_prefix [2018-01-28 21:18:45,543 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 21:18:45,543 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 21:18:45,543 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 21:18:45,543 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 21:18:45,543 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 21:18:45,543 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 21:18:45,543 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-01-28 21:18:45,544 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2018-01-28 21:18:45,544 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-28 21:18:45,544 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-28 21:18:45,544 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-28 21:18:45,544 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-28 21:18:45,544 INFO L128 BoogieDeclarations]: Found specification of procedure is_relaxed_prefix [2018-01-28 21:18:45,544 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 21:18:45,545 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 21:18:45,545 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 21:18:45,950 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 21:18:45,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:18:45 BoogieIcfgContainer [2018-01-28 21:18:45,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 21:18:45,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 21:18:45,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 21:18:45,953 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 21:18:45,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:18:45" (1/3) ... [2018-01-28 21:18:45,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af79a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:18:45, skipping insertion in model container [2018-01-28 21:18:45,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:18:45" (2/3) ... [2018-01-28 21:18:45,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af79a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:18:45, skipping insertion in model container [2018-01-28 21:18:45,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:18:45" (3/3) ... [2018-01-28 21:18:45,956 INFO L107 eAbstractionObserver]: Analyzing ICFG relax_false-valid-deref.i [2018-01-28 21:18:45,962 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 21:18:45,968 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-01-28 21:18:46,015 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 21:18:46,015 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 21:18:46,016 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 21:18:46,016 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 21:18:46,016 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 21:18:46,016 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 21:18:46,016 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 21:18:46,016 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 21:18:46,017 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 21:18:46,038 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2018-01-28 21:18:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-28 21:18:46,046 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:18:46,047 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:18:46,047 INFO L371 AbstractCegarLoop]: === Iteration 1 === [is_relaxed_prefixErr3RequiresViolation, is_relaxed_prefixErr0RequiresViolation, is_relaxed_prefixErr2RequiresViolation, is_relaxed_prefixErr1RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-28 21:18:46,051 INFO L82 PathProgramCache]: Analyzing trace with hash 2006602932, now seen corresponding path program 1 times [2018-01-28 21:18:46,053 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:18:46,053 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:18:46,095 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:18:46,095 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:18:46,095 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:18:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 21:18:46,164 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 21:18:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 21:18:46,430 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 21:18:46,430 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 21:18:46,432 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 21:18:46,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 21:18:46,447 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 21:18:46,449 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 6 states. [2018-01-28 21:18:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 21:18:46,765 INFO L93 Difference]: Finished difference Result 223 states and 266 transitions. [2018-01-28 21:18:46,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 21:18:46,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-28 21:18:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 21:18:46,776 INFO L225 Difference]: With dead ends: 223 [2018-01-28 21:18:46,776 INFO L226 Difference]: Without dead ends: 125 [2018-01-28 21:18:46,780 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-28 21:18:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-28 21:18:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-01-28 21:18:46,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-28 21:18:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 141 transitions. [2018-01-28 21:18:46,825 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 141 transitions. Word has length 25 [2018-01-28 21:18:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 21:18:46,826 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 141 transitions. [2018-01-28 21:18:46,826 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 21:18:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 141 transitions. [2018-01-28 21:18:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-28 21:18:46,827 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 21:18:46,827 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 21:18:46,827 INFO L371 AbstractCegarLoop]: === Iteration 2 === [is_relaxed_prefixErr3RequiresViolation, is_relaxed_prefixErr0RequiresViolation, is_relaxed_prefixErr2RequiresViolation, is_relaxed_prefixErr1RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-28 21:18:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2006602933, now seen corresponding path program 1 times [2018-01-28 21:18:46,828 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 21:18:46,828 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 21:18:46,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:18:46,829 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 21:18:46,829 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 21:18:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 21:18:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 21:18:46,938 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-28 21:18:46,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:18:46 BoogieIcfgContainer [2018-01-28 21:18:46,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 21:18:46,972 INFO L168 Benchmark]: Toolchain (without parser) took 1727.70 ms. Allocated memory was 294.6 MB in the beginning and 441.5 MB in the end (delta: 146.8 MB). Free memory was 252.5 MB in the beginning and 375.1 MB in the end (delta: -122.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 5.3 GB. [2018-01-28 21:18:46,973 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 294.6 MB. Free memory is still 258.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 21:18:46,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.39 ms. Allocated memory is still 294.6 MB. Free memory was 251.5 MB in the beginning and 240.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-28 21:18:46,973 INFO L168 Benchmark]: Boogie Preprocessor took 36.26 ms. Allocated memory is still 294.6 MB. Free memory was 240.6 MB in the beginning and 238.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-28 21:18:46,974 INFO L168 Benchmark]: RCFGBuilder took 452.00 ms. Allocated memory is still 294.6 MB. Free memory was 238.5 MB in the beginning and 206.4 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 5.3 GB. [2018-01-28 21:18:46,974 INFO L168 Benchmark]: TraceAbstraction took 1020.01 ms. Allocated memory was 294.6 MB in the beginning and 441.5 MB in the end (delta: 146.8 MB). Free memory was 206.4 MB in the beginning and 375.1 MB in the end (delta: -168.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 21:18:46,976 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 294.6 MB. Free memory is still 258.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.39 ms. Allocated memory is still 294.6 MB. Free memory was 251.5 MB in the beginning and 240.6 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.26 ms. Allocated memory is still 294.6 MB. Free memory was 240.6 MB in the beginning and 238.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 452.00 ms. Allocated memory is still 294.6 MB. Free memory was 238.5 MB in the beginning and 206.4 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1020.01 ms. Allocated memory was 294.6 MB in the beginning and 441.5 MB in the end (delta: 146.8 MB). Free memory was 206.4 MB in the beginning and 375.1 MB in the end (delta: -168.6 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: [L584] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); VAL [__VERIFIER_nondet_ulong()=536870914, pat_len=536870914] [L584] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); VAL [__VERIFIER_nondet_ulong()=-3221225472, a_len=-3221225472, pat_len=536870914] [L585] EXPR, FCALL malloc(sizeof(int)*pat_len) VAL [a_len=-3221225472, malloc(sizeof(int)*pat_len)={2147483658:0}, pat_len=536870914] [L585] int *pat=malloc(sizeof(int)*pat_len); VAL [a_len=-3221225472, malloc(sizeof(int)*pat_len)={2147483658:0}, pat={2147483658:0}, pat_len=536870914] [L586] EXPR, FCALL malloc(sizeof(int)*a_len) VAL [a_len=-3221225472, malloc(sizeof(int)*a_len)={2147483659:0}, malloc(sizeof(int)*pat_len)={2147483658:0}, pat={2147483658:0}, pat_len=536870914] [L586] int *a=malloc(sizeof(int)*a_len); VAL [a={2147483659:0}, a_len=-3221225472, malloc(sizeof(int)*a_len)={2147483659:0}, malloc(sizeof(int)*pat_len)={2147483658:0}, pat={2147483658:0}, pat_len=536870914] [L587] CALL is_relaxed_prefix(pat, pat_len, a, a_len) VAL [\old(a_length)=1073741824, \old(pat_length)=536870914, a={2147483659:0}, pat={2147483658:0}] [L564] COND FALSE !(pat_length>a_length+1) VAL [\old(a_length)=1073741824, \old(pat_length)=536870914, a={2147483659:0}, a={2147483659:0}, a_length=1073741824, pat={2147483658:0}, pat={2147483658:0}, pat_length=536870914] [L566] int shift=0; VAL [\old(a_length)=1073741824, \old(pat_length)=536870914, a={2147483659:0}, a={2147483659:0}, a_length=1073741824, pat={2147483658:0}, pat={2147483658:0}, pat_length=536870914, shift=0] [L567] int i=0; VAL [\old(a_length)=1073741824, \old(pat_length)=536870914, a={2147483659:0}, a={2147483659:0}, a_length=1073741824, i=0, pat={2147483658:0}, pat={2147483658:0}, pat_length=536870914, shift=0] [L567] COND TRUE i