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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memset3_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-29 00:50:41,189 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 00:50:41,191 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 00:50:41,206 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 00:50:41,207 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 00:50:41,208 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 00:50:41,209 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 00:50:41,210 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 00:50:41,212 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 00:50:41,213 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 00:50:41,214 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 00:50:41,214 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 00:50:41,215 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 00:50:41,217 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 00:50:41,218 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 00:50:41,220 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 00:50:41,222 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 00:50:41,224 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 00:50:41,225 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 00:50:41,227 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 00:50:41,229 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-29 00:50:41,234 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-29 00:50:41,235 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-29 00:50:41,235 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 [2018-01-29 00:50:41,245 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 00:50:41,245 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 00:50:41,246 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 00:50:41,246 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 00:50:41,246 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 00:50:41,246 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 00:50:41,246 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 00:50:41,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 00:50:41,247 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 00:50:41,247 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-29 00:50:41,247 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 00:50:41,247 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 00:50:41,247 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 00:50:41,247 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-29 00:50:41,247 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-29 00:50:41,248 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-29 00:50:41,248 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 00:50:41,248 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 00:50:41,248 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 00:50:41,248 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 00:50:41,248 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 00:50:41,248 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 00:50:41,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 00:50:41,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 00:50:41,249 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 00:50:41,249 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 00:50:41,249 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 00:50:41,249 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 00:50:41,250 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 00:50:41,250 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 00:50:41,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 00:50:41,250 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 00:50:41,251 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 00:50:41,251 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 00:50:41,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 00:50:41,294 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 00:50:41,298 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 00:50:41,299 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 00:50:41,300 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 00:50:41,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memset3_false-valid-deref-write.c [2018-01-29 00:50:41,406 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 00:50:41,411 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-29 00:50:41,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 00:50:41,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 00:50:41,418 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 00:50:41,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7229ac5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41, skipping insertion in model container [2018-01-29 00:50:41,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,436 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 00:50:41,451 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 00:50:41,566 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 00:50:41,580 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 00:50:41,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41 WrapperNode [2018-01-29 00:50:41,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 00:50:41,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 00:50:41,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 00:50:41,587 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 00:50:41,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 00:50:41,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 00:50:41,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 00:50:41,617 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 00:50:41,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (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 [2018-01-29 00:50:41,666 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 00:50:41,666 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 00:50:41,666 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 00:50:41,666 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-29 00:50:41,666 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-29 00:50:41,666 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-29 00:50:41,667 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-29 00:50:41,667 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-29 00:50:41,667 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-29 00:50:41,667 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 00:50:41,667 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 00:50:41,667 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 00:50:41,743 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-01-29 00:50:41,822 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 00:50:41,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 12:50:41 BoogieIcfgContainer [2018-01-29 00:50:41,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 00:50:41,823 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-29 00:50:41,823 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-29 00:50:41,824 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-29 00:50:41,827 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 12:50:41" (1/1) ... [2018-01-29 00:50:41,835 INFO L103 apSepIcfgTransformer]: HeapSepIcfgTransformer: Starting heap partitioning [2018-01-29 00:50:41,835 INFO L104 apSepIcfgTransformer]: To be partitioned heap arrays found [] [2018-01-29 00:50:41,836 INFO L150 apSepIcfgTransformer]: starting freeze-var-style preprocessing [2018-01-29 00:50:41,869 INFO L218 apSepIcfgTransformer]: finished preprocessing for the equality analysis [2018-01-29 00:50:41,921 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-29 00:50:42,558 INFO L311 AbstractInterpreter]: Visited 31 different actions 43 times. Merged at 10 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 21 variables. [2018-01-29 00:50:42,560 INFO L226 apSepIcfgTransformer]: finished equality analysis [2018-01-29 00:50:42,572 INFO L238 apSepIcfgTransformer]: Finished pre analysis before partitioning [2018-01-29 00:50:42,573 INFO L239 apSepIcfgTransformer]: array groups: Set: [2018-01-29 00:50:42,573 INFO L241 apSepIcfgTransformer]: select infos: Set: [2018-01-29 00:50:42,574 INFO L544 PartitionManager]: partitioning result: [2018-01-29 00:50:42,575 INFO L86 ransitionTransformer]: executing heap partitioning transformation [2018-01-29 00:50:42,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 29.01 12:50:42 BasicIcfg [2018-01-29 00:50:42,584 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-29 00:50:42,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 00:50:42,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 00:50:42,588 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 00:50:42,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 12:50:41" (1/4) ... [2018-01-29 00:50:42,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b7736c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 12:50:42, skipping insertion in model container [2018-01-29 00:50:42,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 12:50:41" (2/4) ... [2018-01-29 00:50:42,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b7736c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 12:50:42, skipping insertion in model container [2018-01-29 00:50:42,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 12:50:41" (3/4) ... [2018-01-29 00:50:42,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b7736c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 12:50:42, skipping insertion in model container [2018-01-29 00:50:42,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 29.01 12:50:42" (4/4) ... [2018-01-29 00:50:42,593 INFO L107 eAbstractionObserver]: Analyzing ICFG HeapSeparatedIcfg [2018-01-29 00:50:42,602 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 00:50:42,611 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-29 00:50:42,654 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 00:50:42,654 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 00:50:42,654 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 00:50:42,655 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 00:50:42,655 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 00:50:42,655 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 00:50:42,655 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 00:50:42,655 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 00:50:42,656 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 00:50:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-01-29 00:50:42,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-01-29 00:50:42,678 INFO L322 BasicCegarLoop]: Found error trace [2018-01-29 00:50:42,679 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-01-29 00:50:42,679 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-29 00:50:42,684 INFO L82 PathProgramCache]: Analyzing trace with hash 296383023, now seen corresponding path program 1 times [2018-01-29 00:50:42,686 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 00:50:42,687 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 00:50:42,787 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 00:50:42,787 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 00:50:42,823 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 00:50:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 00:50:42,862 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 00:50:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 00:50:42,950 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 00:50:42,950 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-29 00:50:42,952 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 00:50:42,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 00:50:42,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-29 00:50:42,963 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2018-01-29 00:50:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 00:50:43,092 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-01-29 00:50:43,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 00:50:43,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-01-29 00:50:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 00:50:43,103 INFO L225 Difference]: With dead ends: 28 [2018-01-29 00:50:43,103 INFO L226 Difference]: Without dead ends: 24 [2018-01-29 00:50:43,107 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-29 00:50:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-01-29 00:50:43,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-01-29 00:50:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-01-29 00:50:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-01-29 00:50:43,138 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 6 [2018-01-29 00:50:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 00:50:43,139 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-01-29 00:50:43,139 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 00:50:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-01-29 00:50:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-01-29 00:50:43,140 INFO L322 BasicCegarLoop]: Found error trace [2018-01-29 00:50:43,140 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-01-29 00:50:43,140 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-01-29 00:50:43,141 INFO L82 PathProgramCache]: Analyzing trace with hash 296383025, now seen corresponding path program 1 times [2018-01-29 00:50:43,141 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 00:50:43,141 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 00:50:43,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 00:50:43,142 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 00:50:43,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 00:50:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 00:50:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 00:50:43,188 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-29 00:50:43,191 INFO L84 mationBacktranslator]: Skipped ATE [125] [125] ULTIMATE.startENTRY-->L1: Formula: true InVars {} OutVars{#NULL.offset=|v_#NULL.offset_2|, #NULL.base=|v_#NULL.base_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[#valid, #NULL.offset, #NULL.base] [2018-01-29 00:50:43,192 INFO L84 mationBacktranslator]: Skipped ATE [131] [131] L1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] [2018-01-29 00:50:43,192 INFO L84 mationBacktranslator]: Skipped ATE [137] [137] mainENTRY-->L26: Formula: (and (= (store |v_#valid_9| |v_main_~#cstats~2.base_1| 1) |v_#valid_8|) (= |v_main_~#cstats~2.offset_1| 0) (= 0 (select |v_#valid_9| |v_main_~#cstats~2.base_1|)) (not (= 0 |v_main_~#cstats~2.base_1|)) (= |v_#length_4| (store |v_#length_5| |v_main_~#cstats~2.base_1| 80))) InVars {#length=|v_#length_5|, #valid=|v_#valid_9|} OutVars{main_~#cstats~2.offset=|v_main_~#cstats~2.offset_1|, #length=|v_#length_4|, main_~#cstats~2.base=|v_main_~#cstats~2.base_1|, #valid=|v_#valid_8|} AuxVars[] AssignedVars[main_~#cstats~2.offset, main_~#cstats~2.base, #valid, #length] [2018-01-29 00:50:43,192 INFO L84 mationBacktranslator]: Skipped ATE [141] [141] L26-->L28: Formula: true InVars {} OutVars{main_~point~2.offset=v_main_~point~2.offset_1, main_~point~2.base=v_main_~point~2.base_1} AuxVars[] AssignedVars[main_~point~2.offset, main_~point~2.base] [2018-01-29 00:50:43,192 INFO L84 mationBacktranslator]: Skipped ATE [145] [145] L28-->L29: Formula: (and (= v_main_~point~2.base_2 |v_main_~#cstats~2.base_2|) (= v_main_~point~2.offset_2 |v_main_~#cstats~2.offset_2|)) InVars {main_~#cstats~2.offset=|v_main_~#cstats~2.offset_2|, main_~#cstats~2.base=|v_main_~#cstats~2.base_2|} OutVars{main_~#cstats~2.offset=|v_main_~#cstats~2.offset_2|, main_~#cstats~2.base=|v_main_~#cstats~2.base_2|, main_~point~2.offset=v_main_~point~2.offset_2, main_~point~2.base=v_main_~point~2.base_2} AuxVars[] AssignedVars[main_~point~2.offset, main_~point~2.base] [2018-01-29 00:50:43,192 INFO L84 mationBacktranslator]: Skipped ATE [151] [151] L29-->mainErr1RequiresViolation: Formula: (or (not (<= 0 v_main_~point~2.offset_4)) (not (<= (+ v_main_~point~2.offset_4 81) (select |v_#length_7| v_main_~point~2.base_5)))) InVars {#length=|v_#length_7|, main_~point~2.offset=v_main_~point~2.offset_4, main_~point~2.base=v_main_~point~2.base_5} OutVars{#length=|v_#length_7|, main_~point~2.offset=v_main_~point~2.offset_4, main_~point~2.base=v_main_~point~2.base_5} AuxVars[] AssignedVars[] [2018-01-29 00:50:43,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 12:50:43 BasicIcfg [2018-01-29 00:50:43,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-29 00:50:43,198 INFO L168 Benchmark]: Toolchain (without parser) took 1791.01 ms. Allocated memory was 304.1 MB in the beginning and 469.2 MB in the end (delta: 165.2 MB). Free memory was 265.0 MB in the beginning and 432.3 MB in the end (delta: -167.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 00:50:43,199 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 304.1 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 00:50:43,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.51 ms. Allocated memory is still 304.1 MB. Free memory was 264.0 MB in the beginning and 255.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-01-29 00:50:43,200 INFO L168 Benchmark]: Boogie Preprocessor took 29.36 ms. Allocated memory is still 304.1 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 996.5 kB). Peak memory consumption was 996.5 kB. Max. memory is 5.3 GB. [2018-01-29 00:50:43,200 INFO L168 Benchmark]: RCFGBuilder took 205.93 ms. Allocated memory is still 304.1 MB. Free memory was 254.9 MB in the beginning and 241.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 5.3 GB. [2018-01-29 00:50:43,201 INFO L168 Benchmark]: IcfgTransformer took 761.04 ms. Allocated memory was 304.1 MB in the beginning and 326.1 MB in the end (delta: 22.0 MB). Free memory was 241.6 MB in the beginning and 236.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 5.3 GB. [2018-01-29 00:50:43,202 INFO L168 Benchmark]: TraceAbstraction took 612.11 ms. Allocated memory was 326.1 MB in the beginning and 469.2 MB in the end (delta: 143.1 MB). Free memory was 236.0 MB in the beginning and 432.3 MB in the end (delta: -196.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 00:50:43,204 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 304.1 MB. Free memory is still 269.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 174.51 ms. Allocated memory is still 304.1 MB. Free memory was 264.0 MB in the beginning and 255.9 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.36 ms. Allocated memory is still 304.1 MB. Free memory was 255.9 MB in the beginning and 254.9 MB in the end (delta: 996.5 kB). Peak memory consumption was 996.5 kB. Max. memory is 5.3 GB. * RCFGBuilder took 205.93 ms. Allocated memory is still 304.1 MB. Free memory was 254.9 MB in the beginning and 241.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 5.3 GB. * IcfgTransformer took 761.04 ms. Allocated memory was 304.1 MB in the beginning and 326.1 MB in the end (delta: 22.0 MB). Free memory was 241.6 MB in the beginning and 236.0 MB in the end (delta: 5.6 MB). Peak memory consumption was 27.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 612.11 ms. Allocated memory was 326.1 MB in the beginning and 469.2 MB in the end (delta: 143.1 MB). Free memory was 236.0 MB in the beginning and 432.3 MB in the end (delta: -196.3 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 26 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 215 LocStat_NO_SUPPORTING_DISEQUALITIES : 81 LocStat_NO_DISJUNCTIONS : -52 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 40 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 59 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 41 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 3.812538 RENAME_VARIABLES(MILLISECONDS) : 0.029881 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 3.485713 PROJECTAWAY(MILLISECONDS) : 0.074510 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.272791 DISJOIN(MILLISECONDS) : 1.597482 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.056943 ADD_EQUALITY(MILLISECONDS) : 0.025007 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.017193 #CONJOIN_DISJUNCTIVE : 64 #RENAME_VARIABLES : 114 #UNFREEZE : 0 #CONJOIN : 109 #PROJECTAWAY : 105 #ADD_WEAK_EQUALITY : 4 #DISJOIN : 4 #RENAME_VARIABLES_DISJUNCTIVE : 113 #ADD_EQUALITY : 59 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 3 * Results from de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation: - StatisticsResult: HeapSeparatorStatistics * 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: - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 3 error locations. UNSAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 9 SDslu, 27 SDs, 0 SdLazy, 23 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 85 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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/memset3_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-29_00-50-43-216.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset3_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-VPDomainBenchmark-0-2018-01-29_00-50-43-216.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset3_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-BenchmarkWithCounters-0-2018-01-29_00-50-43-216.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset3_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-HeapSeparatorBenchmark-0-2018-01-29_00-50-43-216.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset3_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-29_00-50-43-216.csv Received shutdown request...