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/memleaks_test8_2_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:46:18,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:46:18,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:46:18,913 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:46:18,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:46:18,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:46:18,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:46:18,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:46:18,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:46:18,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:46:18,918 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:46:18,919 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:46:18,919 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:46:18,920 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:46:18,921 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:46:18,923 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:46:18,924 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:46:18,926 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:46:18,927 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:46:18,928 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:46:18,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:46:18,933 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:46:18,933 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:46:18,934 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 04:46:18,944 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:46:18,944 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:46:18,945 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:46:18,945 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:46:18,945 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:46:18,945 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:46:18,946 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:46:18,946 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:46:18,946 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:46:18,946 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:46:18,946 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:46:18,946 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:46:18,947 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:46:18,947 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:46:18,947 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:46:18,947 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:46:18,947 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:46:18,947 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:46:18,948 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:46:18,948 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:46:18,948 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:46:18,948 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:46:18,948 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:46:18,948 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:46:18,948 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:46:18,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:46:18,989 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:46:18,994 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:46:18,995 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:46:18,995 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:46:18,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_2_false-valid-free.i [2018-02-04 04:46:19,144 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:46:19,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:46:19,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:46:19,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:46:19,152 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:46:19,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b089594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19, skipping insertion in model container [2018-02-04 04:46:19,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,170 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:46:19,209 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:46:19,293 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:46:19,302 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:46:19,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19 WrapperNode [2018-02-04 04:46:19,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:46:19,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:46:19,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:46:19,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:46:19,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (1/1) ... [2018-02-04 04:46:19,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:46:19,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:46:19,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:46:19,332 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:46:19,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (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 04:46:19,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:46:19,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:46:19,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:46:19,368 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-02-04 04:46:19,368 INFO L136 BoogieDeclarations]: Found implementation of procedure free_8 [2018-02-04 04:46:19,368 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:46:19,368 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:46:19,368 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:46:19,368 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:46:19,368 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:46:19,368 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure free_8 [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:46:19,369 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:46:19,464 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:46:19,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:46:19 BoogieIcfgContainer [2018-02-04 04:46:19,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:46:19,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:46:19,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:46:19,467 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:46:19,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:46:19" (1/3) ... [2018-02-04 04:46:19,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467f4a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:46:19, skipping insertion in model container [2018-02-04 04:46:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:46:19" (2/3) ... [2018-02-04 04:46:19,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@467f4a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:46:19, skipping insertion in model container [2018-02-04 04:46:19,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:46:19" (3/3) ... [2018-02-04 04:46:19,469 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test8_2_false-valid-free.i [2018-02-04 04:46:19,474 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:46:19,479 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 04:46:19,507 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:46:19,508 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:46:19,508 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:46:19,508 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:46:19,508 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:46:19,508 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:46:19,508 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:46:19,508 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:46:19,509 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:46:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-02-04 04:46:19,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:46:19,523 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:46:19,523 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:46:19,523 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:46:19,526 INFO L82 PathProgramCache]: Analyzing trace with hash -936099957, 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 04:46:19,537 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:46:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:19,724 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 04:46:19,756 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:46:19,757 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:46:19,757 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:46:19,758 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 04:46:19,758 INFO L182 omatonBuilderFactory]: Interpolants [49#(= 0 ~a8.offset), 50#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|)), 51#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|)), 36#true, 37#false, 56#(= 0 |alloc_8_#t~ret2.offset|), 57#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 58#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 04:46:19,758 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 04:46:19,760 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:46:19,770 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:46:19,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:46:19,773 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 8 states. [2018-02-04 04:46:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:46:20,037 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2018-02-04 04:46:20,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:46:20,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-02-04 04:46:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:46:20,047 INFO L225 Difference]: With dead ends: 50 [2018-02-04 04:46:20,047 INFO L226 Difference]: Without dead ends: 42 [2018-02-04 04:46:20,049 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-02-04 04:46:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-04 04:46:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-02-04 04:46:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-04 04:46:20,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-02-04 04:46:20,088 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 18 [2018-02-04 04:46:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:46:20,088 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-02-04 04:46:20,088 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:46:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-02-04 04:46:20,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:46:20,088 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:46:20,089 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:46:20,089 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:46:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash -936099956, 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 04:46:20,091 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:46:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,164 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 04:46:20,183 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:46:20,183 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:46:20,183 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:46:20,184 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 04:46:20,184 INFO L182 omatonBuilderFactory]: Interpolants [176#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|)), 161#true, 162#false, 181#(= 0 |alloc_8_#t~ret2.base|), 182#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 183#(= 0 |ldv_malloc_#res.base|), 174#(= 0 ~a8.base), 175#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|))] [2018-02-04 04:46:20,184 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 04:46:20,185 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:46:20,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:46:20,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:46:20,186 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 8 states. [2018-02-04 04:46:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:46:20,388 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2018-02-04 04:46:20,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:46:20,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-02-04 04:46:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:46:20,390 INFO L225 Difference]: With dead ends: 52 [2018-02-04 04:46:20,390 INFO L226 Difference]: Without dead ends: 40 [2018-02-04 04:46:20,391 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-02-04 04:46:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-04 04:46:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-02-04 04:46:20,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 04:46:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-02-04 04:46:20,394 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 18 [2018-02-04 04:46:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:46:20,394 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-02-04 04:46:20,394 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:46:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-02-04 04:46:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:46:20,395 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:46:20,395 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:46:20,395 INFO L371 AbstractCegarLoop]: === Iteration 3 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:46:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1003269641, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:46:20,403 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:46:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,464 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 04:46:20,479 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:46:20,479 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:46:20,480 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:46:20,480 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 04:46:20,480 INFO L182 omatonBuilderFactory]: Interpolants [310#(= 0 |alloc_8_#t~ret2.offset|), 311#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 312#(= 0 |ldv_malloc_#t~malloc1.offset|), 313#(= 0 |ldv_malloc_#res.offset|), 301#(= 0 ~a8.offset), 286#true, 302#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|)), 287#false, 303#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|))] [2018-02-04 04:46:20,480 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 04:46:20,480 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:46:20,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:46:20,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:46:20,480 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 9 states. [2018-02-04 04:46:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:46:20,577 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2018-02-04 04:46:20,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:46:20,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-04 04:46:20,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:46:20,578 INFO L225 Difference]: With dead ends: 38 [2018-02-04 04:46:20,578 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 04:46:20,578 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-02-04 04:46:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 04:46:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-02-04 04:46:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-02-04 04:46:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-02-04 04:46:20,581 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 20 [2018-02-04 04:46:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:46:20,581 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-02-04 04:46:20,582 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:46:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-02-04 04:46:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:46:20,582 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:46:20,582 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:46:20,583 INFO L371 AbstractCegarLoop]: === Iteration 4 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:46:20,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1003269642, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:46:20,588 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:46:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,597 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:46:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,624 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:46:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:46:20,645 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:46:20,647 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:46:20,648 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:46:20,670 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-04 04:46:20,672 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:46:20,673 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:46:20,674 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 04:46:20,680 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:46:20,681 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:46:20,682 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-04 04:46:20,682 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:46:20,683 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:46:20,684 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 04:46:20,695 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 04:46:20,720 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:46:20,720 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:46:20,721 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:46:20,721 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 04:46:20,721 INFO L182 omatonBuilderFactory]: Interpolants [400#false, 416#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|)), 423#(= 1 (select |#valid| |alloc_8_#t~ret2.base|)), 424#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 425#(= 1 (select |#valid| |ldv_malloc_#t~malloc1.base|)), 426#(= 1 (select |#valid| |ldv_malloc_#res.base|)), 414#(= 1 (select |#valid| ~a8.base)), 399#true, 415#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|))] [2018-02-04 04:46:20,721 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 04:46:20,721 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:46:20,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:46:20,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:46:20,722 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2018-02-04 04:46:20,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:46:20,837 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-02-04 04:46:20,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:46:20,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-04 04:46:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:46:20,838 INFO L225 Difference]: With dead ends: 41 [2018-02-04 04:46:20,838 INFO L226 Difference]: Without dead ends: 41 [2018-02-04 04:46:20,838 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-02-04 04:46:20,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-04 04:46:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-02-04 04:46:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-04 04:46:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2018-02-04 04:46:20,841 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2018-02-04 04:46:20,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:46:20,841 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2018-02-04 04:46:20,841 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:46:20,841 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2018-02-04 04:46:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:46:20,842 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:46:20,842 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:46:20,842 INFO L371 AbstractCegarLoop]: === Iteration 5 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:46:20,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1026214949, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:46:20,845 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:46:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:46:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:46:20,883 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 04:46:20,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 04:46:20 BoogieIcfgContainer [2018-02-04 04:46:20,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 04:46:20,899 INFO L168 Benchmark]: Toolchain (without parser) took 1754.24 ms. Allocated memory was 399.5 MB in the beginning and 593.5 MB in the end (delta: 194.0 MB). Free memory was 356.2 MB in the beginning and 456.5 MB in the end (delta: -100.3 MB). Peak memory consumption was 93.7 MB. Max. memory is 5.3 GB. [2018-02-04 04:46:20,900 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 399.5 MB. Free memory is still 362.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:46:20,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.38 ms. Allocated memory is still 399.5 MB. Free memory was 356.2 MB in the beginning and 343.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:46:20,901 INFO L168 Benchmark]: Boogie Preprocessor took 24.29 ms. Allocated memory is still 399.5 MB. Free memory was 343.0 MB in the beginning and 341.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:46:20,901 INFO L168 Benchmark]: RCFGBuilder took 133.01 ms. Allocated memory is still 399.5 MB. Free memory was 341.7 MB in the beginning and 327.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. [2018-02-04 04:46:20,901 INFO L168 Benchmark]: TraceAbstraction took 1433.79 ms. Allocated memory was 399.5 MB in the beginning and 593.5 MB in the end (delta: 194.0 MB). Free memory was 327.1 MB in the beginning and 456.5 MB in the end (delta: -129.4 MB). Peak memory consumption was 64.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:46:20,903 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 399.5 MB. Free memory is still 362.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 160.38 ms. Allocated memory is still 399.5 MB. Free memory was 356.2 MB in the beginning and 343.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.29 ms. Allocated memory is still 399.5 MB. Free memory was 343.0 MB in the beginning and 341.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 133.01 ms. Allocated memory is still 399.5 MB. Free memory was 341.7 MB in the beginning and 327.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1433.79 ms. Allocated memory was 399.5 MB in the beginning and 593.5 MB in the end (delta: 194.0 MB). Free memory was 327.1 MB in the beginning and 456.5 MB in the end (delta: -129.4 MB). Peak memory consumption was 64.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L1434] int *a8; VAL [\old(a8)=0, \old(a8)=0, a8={0:0}] [L1453] CALL entry_point() VAL [\old(a8)=0, \old(a8)=0, a8={0:0}] [L1446] CALL alloc_8() VAL [\old(a8)=0, \old(a8)=0, a8={0:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, a8={0:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, a8={0:0}, malloc(size)={9:0}, size=4] [L1074] RET return malloc(size); VAL [\old(a8)=0, \old(a8)=0, \old(size)=4, \result={9:0}, a8={0:0}, malloc(size)={9:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [\old(a8)=0, \old(a8)=0, a8={0:0}, ldv_malloc(sizeof(int))={9:0}] [L1437] RET a8 = (int *)ldv_malloc(sizeof(int)) [L1446] alloc_8() VAL [\old(a8)=0, \old(a8)=0, a8={9:0}] [L1447] CALL free_8() VAL [\old(a8)=0, \old(a8)=0, a8={9:0}] [L1441] COND TRUE \read(*a8) VAL [\old(a8)=0, \old(a8)=0, a8={9:0}] [L1441] FCALL free(a8) VAL [\old(a8)=0, \old(a8)=0, a8={9:0}] [L1448] CALL free_8() VAL [\old(a8)=0, \old(a8)=0, a8={9:0}] [L1441] COND TRUE \read(*a8) VAL [\old(a8)=0, \old(a8)=0, a8={9:0}] [L1441] FCALL free(a8) VAL [\old(a8)=0, \old(a8)=0, a8={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 33 locations, 3 error locations. UNSAFE Result, 1.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 87 SDtfs, 157 SDslu, 215 SDs, 0 SdLazy, 444 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=1, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 5246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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/memleaks_test8_2_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-46-20-908.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test8_2_false-valid-free.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_04-46-20-908.csv Received shutdown request...