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/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memset2_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 20:39:47,781 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 20:39:47,782 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 20:39:47,795 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 20:39:47,795 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 20:39:47,796 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 20:39:47,796 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 20:39:47,797 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 20:39:47,799 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 20:39:47,800 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 20:39:47,801 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 20:39:47,801 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 20:39:47,802 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 20:39:47,803 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 20:39:47,803 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 20:39:47,805 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 20:39:47,807 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 20:39:47,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 20:39:47,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 20:39:47,810 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 20:39:47,812 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 20:39:47,812 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 20:39:47,812 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 20:39:47,813 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 20:39:47,814 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 20:39:47,815 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 20:39:47,815 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 20:39:47,816 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 20:39:47,816 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 20:39:47,816 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 20:39:47,817 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 20:39:47,817 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-02-04 20:39:47,827 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 20:39:47,827 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 20:39:47,828 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 20:39:47,828 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 20:39:47,828 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 20:39:47,829 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 20:39:47,829 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 20:39:47,829 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 20:39:47,829 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 20:39:47,829 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 20:39:47,829 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 20:39:47,829 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 20:39:47,830 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 20:39:47,830 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 20:39:47,830 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 20:39:47,830 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 20:39:47,830 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 20:39:47,830 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 20:39:47,831 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 20:39:47,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 20:39:47,831 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 20:39:47,831 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 20:39:47,831 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 20:39:47,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:39:47,859 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 20:39:47,870 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 20:39:47,873 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 20:39:47,874 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 20:39:47,874 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 20:39:47,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memset2_false-valid-deref-write.c [2018-02-04 20:39:47,975 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 20:39:47,976 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 20:39:47,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 20:39:47,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 20:39:47,982 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 20:39:47,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:39:47" (1/1) ... [2018-02-04 20:39:47,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1821a5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:47, skipping insertion in model container [2018-02-04 20:39:47,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:39:47" (1/1) ... [2018-02-04 20:39:48,000 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:39:48,014 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:39:48,095 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:39:48,104 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:39:48,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48 WrapperNode [2018-02-04 20:39:48,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 20:39:48,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 20:39:48,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 20:39:48,107 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 20:39:48,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (1/1) ... [2018-02-04 20:39:48,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (1/1) ... [2018-02-04 20:39:48,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (1/1) ... [2018-02-04 20:39:48,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (1/1) ... [2018-02-04 20:39:48,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (1/1) ... [2018-02-04 20:39:48,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (1/1) ... [2018-02-04 20:39:48,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (1/1) ... [2018-02-04 20:39:48,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 20:39:48,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 20:39:48,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 20:39:48,124 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 20:39:48,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-04 20:39:48,161 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 20:39:48,161 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 20:39:48,161 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 20:39:48,162 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 20:39:48,162 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 20:39:48,162 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 20:39:48,162 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-02-04 20:39:48,162 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-02-04 20:39:48,162 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-02-04 20:39:48,162 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 20:39:48,162 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 20:39:48,163 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 20:39:48,213 WARN L455 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-02-04 20:39:48,244 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 20:39:48,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:39:48 BoogieIcfgContainer [2018-02-04 20:39:48,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 20:39:48,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 20:39:48,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 20:39:48,246 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 20:39:48,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 08:39:47" (1/3) ... [2018-02-04 20:39:48,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb5c643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:39:48, skipping insertion in model container [2018-02-04 20:39:48,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:39:48" (2/3) ... [2018-02-04 20:39:48,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb5c643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:39:48, skipping insertion in model container [2018-02-04 20:39:48,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:39:48" (3/3) ... [2018-02-04 20:39:48,248 INFO L107 eAbstractionObserver]: Analyzing ICFG memset2_false-valid-deref-write.c [2018-02-04 20:39:48,254 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 20:39:48,259 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 20:39:48,288 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 20:39:48,289 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 20:39:48,289 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 20:39:48,289 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 20:39:48,289 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 20:39:48,289 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 20:39:48,289 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 20:39:48,289 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 20:39:48,290 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 20:39:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-02-04 20:39:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-04 20:39:48,304 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:39:48,304 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:39:48,304 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 20:39:48,307 INFO L82 PathProgramCache]: Analyzing trace with hash 682221498, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:39:48,326 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:39:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:39:48,348 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:39:48,355 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:39:48,356 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:39:48,357 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:39:48,357 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:39:48,395 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)) is different from true [2018-02-04 20:39:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:39:48,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:39:48,464 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:39:48,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 20:39:48,465 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:39:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:39:48,465 INFO L182 omatonBuilderFactory]: Interpolants [32#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 25#true, 26#false, 30#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)), 31#(= 1 (select |#valid| |main_~#cstats~0.base|))] [2018-02-04 20:39:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:39:48,466 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 20:39:48,475 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 20:39:48,475 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2018-02-04 20:39:48,477 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2018-02-04 20:39:48,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:39:48,556 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-02-04 20:39:48,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 20:39:48,558 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-02-04 20:39:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:39:48,565 INFO L225 Difference]: With dead ends: 21 [2018-02-04 20:39:48,566 INFO L226 Difference]: Without dead ends: 18 [2018-02-04 20:39:48,568 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2018-02-04 20:39:48,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-02-04 20:39:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-02-04 20:39:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-02-04 20:39:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-02-04 20:39:48,596 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 7 [2018-02-04 20:39:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:39:48,596 INFO L432 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-02-04 20:39:48,596 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 20:39:48,596 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-02-04 20:39:48,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-04 20:39:48,597 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:39:48,597 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:39:48,597 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 20:39:48,597 INFO L82 PathProgramCache]: Analyzing trace with hash 682221499, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:39:48,601 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:39:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 20:39:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 20:39:48,655 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 20:39:48,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 08:39:48 BoogieIcfgContainer [2018-02-04 20:39:48,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 20:39:48,676 INFO L168 Benchmark]: Toolchain (without parser) took 700.50 ms. Allocated memory is still 402.7 MB. Free memory was 359.5 MB in the beginning and 301.0 MB in the end (delta: 58.5 MB). Peak memory consumption was 58.5 MB. Max. memory is 5.3 GB. [2018-02-04 20:39:48,678 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 402.7 MB. Free memory is still 364.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:39:48,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.07 ms. Allocated memory is still 402.7 MB. Free memory was 359.5 MB in the beginning and 351.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-04 20:39:48,678 INFO L168 Benchmark]: Boogie Preprocessor took 16.43 ms. Allocated memory is still 402.7 MB. Free memory is still 351.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:39:48,679 INFO L168 Benchmark]: RCFGBuilder took 120.56 ms. Allocated memory is still 402.7 MB. Free memory was 351.6 MB in the beginning and 337.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-04 20:39:48,679 INFO L168 Benchmark]: TraceAbstraction took 431.07 ms. Allocated memory is still 402.7 MB. Free memory was 337.6 MB in the beginning and 301.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 5.3 GB. [2018-02-04 20:39:48,682 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 402.7 MB. Free memory is still 364.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 130.07 ms. Allocated memory is still 402.7 MB. Free memory was 359.5 MB in the beginning and 351.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 16.43 ms. Allocated memory is still 402.7 MB. Free memory is still 351.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 120.56 ms. Allocated memory is still 402.7 MB. Free memory was 351.6 MB in the beginning and 337.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 431.07 ms. Allocated memory is still 402.7 MB. Free memory was 337.6 MB in the beginning and 301.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. 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: [L21] FCALL struct compstat cstats ; VAL [cstats={6:0}] [L22] FCALL memset((void *)(& cstats), 0, 41UL) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 7 SDslu, 8 SDs, 0 SdLazy, 25 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 1 QuantifiedInterpolants, 186 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 /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_20-39-48-689.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset2_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_20-39-48-689.csv Received shutdown request...