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_test4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:47:57,517 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:47:57,518 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:47:57,528 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:47:57,529 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:47:57,530 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:47:57,531 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:47:57,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:47:57,534 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:47:57,535 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:47:57,535 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:47:57,535 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:47:57,536 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:47:57,537 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:47:57,538 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:47:57,540 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:47:57,541 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:47:57,542 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:47:57,543 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:47:57,544 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:47:57,546 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:47:57,551 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 04:47:57,561 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:47:57,562 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:47:57,563 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:47:57,563 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:47:57,563 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:47:57,564 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:47:57,564 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:47:57,564 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:47:57,564 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:47:57,564 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:47:57,564 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:47:57,564 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:47:57,565 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:47:57,565 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:47:57,565 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:47:57,565 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:47:57,565 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:47:57,566 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:47:57,566 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:47:57,566 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:47:57,566 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:47:57,566 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:47:57,566 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:47:57,567 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:47:57,567 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:47:57,594 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:47:57,601 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:47:57,603 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:47:57,604 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:47:57,605 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:47:57,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-02-04 04:47:57,733 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:47:57,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:47:57,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:47:57,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:47:57,739 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:47:57,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581e1694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57, skipping insertion in model container [2018-02-04 04:47:57,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,751 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:47:57,785 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:47:57,858 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:47:57,868 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:47:57,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57 WrapperNode [2018-02-04 04:47:57,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:47:57,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:47:57,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:47:57,872 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:47:57,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (1/1) ... [2018-02-04 04:47:57,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:47:57,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:47:57,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:47:57,890 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:47:57,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (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 04:47:57,925 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:47:57,925 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:47:57,925 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:47:57,925 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:47:57,925 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:47:57,926 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:47:58,015 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:47:58,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:47:58 BoogieIcfgContainer [2018-02-04 04:47:58,016 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:47:58,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:47:58,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:47:58,018 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:47:58,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:47:57" (1/3) ... [2018-02-04 04:47:58,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b5e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:47:58, skipping insertion in model container [2018-02-04 04:47:58,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:47:57" (2/3) ... [2018-02-04 04:47:58,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b5e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:47:58, skipping insertion in model container [2018-02-04 04:47:58,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:47:58" (3/3) ... [2018-02-04 04:47:58,020 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-02-04 04:47:58,025 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:47:58,030 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 04:47:58,063 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:47:58,063 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:47:58,063 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:47:58,063 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:47:58,063 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:47:58,064 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:47:58,064 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:47:58,064 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:47:58,065 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:47:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-02-04 04:47:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-04 04:47:58,081 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:47:58,081 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:47:58,082 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:47:58,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1713265670, 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 04:47:58,092 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:47:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,189 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 04:47:58,216 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:47:58,216 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:47:58,217 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:47:58,217 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 04:47:58,217 INFO L182 omatonBuilderFactory]: Interpolants [35#(= |#valid| |old(#valid)|), 45#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 30#true, 46#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 31#false] [2018-02-04 04:47:58,217 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 04:47:58,218 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:47:58,228 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:47:58,228 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:47:58,230 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2018-02-04 04:47:58,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:47:58,321 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-02-04 04:47:58,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:47:58,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-02-04 04:47:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:47:58,329 INFO L225 Difference]: With dead ends: 40 [2018-02-04 04:47:58,330 INFO L226 Difference]: Without dead ends: 33 [2018-02-04 04:47:58,332 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:47:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-04 04:47:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-02-04 04:47:58,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 04:47:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-02-04 04:47:58,378 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2018-02-04 04:47:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:47:58,378 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-02-04 04:47:58,379 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:47:58,379 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-02-04 04:47:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:47:58,380 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:47:58,381 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 04:47:58,381 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:47:58,381 INFO L82 PathProgramCache]: Analyzing trace with hash 295629500, 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 04:47:58,385 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:47:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,461 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 04:47:58,489 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:47:58,489 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:47:58,489 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:47:58,490 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 04:47:58,490 INFO L182 omatonBuilderFactory]: Interpolants [145#(not (= 0 |entry_point_#t~ret2.base|)), 146#(not (= 0 entry_point_~p~0.base)), 147#(not (= 0 |ldv_malloc_#t~malloc1.base|)), 148#(not (= 0 |ldv_malloc_#res.base|)), 121#true, 137#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 122#false, 138#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|))] [2018-02-04 04:47:58,490 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 04:47:58,492 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:47:58,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:47:58,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:47:58,492 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 8 states. [2018-02-04 04:47:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:47:58,604 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2018-02-04 04:47:58,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:47:58,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-02-04 04:47:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:47:58,606 INFO L225 Difference]: With dead ends: 39 [2018-02-04 04:47:58,606 INFO L226 Difference]: Without dead ends: 39 [2018-02-04 04:47:58,607 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-04 04:47:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-02-04 04:47:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-02-04 04:47:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 04:47:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-04 04:47:58,611 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2018-02-04 04:47:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:47:58,612 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-04 04:47:58,612 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:47:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-04 04:47:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:47:58,612 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:47:58,612 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:47:58,612 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:47:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005914, 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 04:47:58,616 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:47:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:58,689 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:47:58,690 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:47:58,690 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:47:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:58,690 INFO L182 omatonBuilderFactory]: Interpolants [230#(= 0 |entry_point_#t~ret3.offset|), 231#(= 0 entry_point_~q~0.offset), 232#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 217#true, 233#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 218#false, 234#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 04:47:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:58,691 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:47:58,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:47:58,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:47:58,691 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 7 states. [2018-02-04 04:47:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:47:58,791 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-02-04 04:47:58,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:47:58,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-02-04 04:47:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:47:58,792 INFO L225 Difference]: With dead ends: 35 [2018-02-04 04:47:58,792 INFO L226 Difference]: Without dead ends: 35 [2018-02-04 04:47:58,792 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:47:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-04 04:47:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2018-02-04 04:47:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 04:47:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-02-04 04:47:58,796 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2018-02-04 04:47:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:47:58,797 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-02-04 04:47:58,797 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:47:58,797 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-02-04 04:47:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:47:58,797 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:47:58,798 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:47:58,798 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:47:58,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005913, 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 04:47:58,801 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:47:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:58,867 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:47:58,867 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:47:58,867 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:47:58,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:58,867 INFO L182 omatonBuilderFactory]: Interpolants [320#(= 0 |entry_point_#t~ret3.base|), 321#(= 0 entry_point_~q~0.base), 322#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 307#true, 323#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 308#false, 324#(= 0 |ldv_malloc_#res.base|)] [2018-02-04 04:47:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:58,868 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:47:58,868 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:47:58,868 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:47:58,868 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 7 states. [2018-02-04 04:47:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:47:59,009 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-02-04 04:47:59,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:47:59,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-02-04 04:47:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:47:59,010 INFO L225 Difference]: With dead ends: 38 [2018-02-04 04:47:59,010 INFO L226 Difference]: Without dead ends: 33 [2018-02-04 04:47:59,011 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:47:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-04 04:47:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2018-02-04 04:47:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-04 04:47:59,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-02-04 04:47:59,014 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2018-02-04 04:47:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:47:59,015 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-02-04 04:47:59,015 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:47:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-02-04 04:47:59,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 04:47:59,016 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:47:59,016 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:47:59,016 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:47:59,016 INFO L82 PathProgramCache]: Analyzing trace with hash 245416420, 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 04:47:59,019 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:47:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:59,095 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:47:59,095 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:47:59,095 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:47:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:59,095 INFO L182 omatonBuilderFactory]: Interpolants [418#(= 0 |entry_point_#t~ret3.offset|), 403#true, 419#(= 0 entry_point_~q~0.offset), 404#false, 420#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 421#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 422#(= 0 |ldv_malloc_#t~malloc1.offset|), 423#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 04:47:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:59,096 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:47:59,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:47:59,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:47:59,096 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2018-02-04 04:47:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:47:59,164 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-02-04 04:47:59,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:47:59,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-02-04 04:47:59,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:47:59,165 INFO L225 Difference]: With dead ends: 30 [2018-02-04 04:47:59,165 INFO L226 Difference]: Without dead ends: 30 [2018-02-04 04:47:59,165 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:47:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-04 04:47:59,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-02-04 04:47:59,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-02-04 04:47:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2018-02-04 04:47:59,167 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2018-02-04 04:47:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:47:59,168 INFO L432 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2018-02-04 04:47:59,168 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:47:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2018-02-04 04:47:59,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 04:47:59,168 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:47:59,168 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:47:59,168 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:47:59,168 INFO L82 PathProgramCache]: Analyzing trace with hash 245416421, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:47:59,171 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:47:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:59,246 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 04:47:59,246 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-02-04 04:47:59,246 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:47:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:59,247 INFO L182 omatonBuilderFactory]: Interpolants [501#(and (= 0 |entry_point_#t~ret2.offset|) (= 0 |entry_point_#t~ret2.base|)), 502#(and (= entry_point_~p~0.offset 0) (= entry_point_~p~0.base 0)), 492#true, 493#false, 509#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 510#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 511#(and (= 0 |ldv_malloc_#res.offset|) (= 0 |ldv_malloc_#res.base|))] [2018-02-04 04:47:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:47:59,247 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:47:59,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:47:59,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:47:59,247 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 7 states. [2018-02-04 04:47:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:47:59,304 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-02-04 04:47:59,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:47:59,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-02-04 04:47:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:47:59,305 INFO L225 Difference]: With dead ends: 29 [2018-02-04 04:47:59,305 INFO L226 Difference]: Without dead ends: 27 [2018-02-04 04:47:59,305 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:47:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-02-04 04:47:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-02-04 04:47:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 04:47:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-04 04:47:59,307 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22 [2018-02-04 04:47:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:47:59,307 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-04 04:47:59,307 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:47:59,307 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-04 04:47:59,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 04:47:59,308 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:47:59,308 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:47:59,308 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:47:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1092908839, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:47:59,310 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:47:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:47:59,337 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:47:59,380 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:47:59,381 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:47:59,415 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 04:47:59,417 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:47:59,421 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:47:59,421 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 04:47:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 04:47:59,464 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:47:59,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:47:59,464 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:47:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 04:47:59,465 INFO L182 omatonBuilderFactory]: Interpolants [578#true, 579#false, 595#(= 1 (select |#valid| |entry_point_#t~ret3.base|)), 596#(= 1 (select |#valid| entry_point_~q~0.base)), 597#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 598#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 599#(= 1 (select |#valid| |ldv_malloc_#t~malloc1.base|)), 600#(= 1 (select |#valid| |ldv_malloc_#res.base|))] [2018-02-04 04:47:59,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 04:47:59,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:47:59,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:47:59,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:47:59,466 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2018-02-04 04:47:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:47:59,546 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-02-04 04:47:59,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:47:59,547 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-02-04 04:47:59,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:47:59,547 INFO L225 Difference]: With dead ends: 26 [2018-02-04 04:47:59,547 INFO L226 Difference]: Without dead ends: 26 [2018-02-04 04:47:59,547 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-04 04:47:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-04 04:47:59,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-02-04 04:47:59,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 04:47:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-04 04:47:59,549 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 24 [2018-02-04 04:47:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:47:59,549 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-04 04:47:59,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:47:59,549 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-04 04:47:59,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:47:59,550 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:47:59,550 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:47:59,550 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:47:59,550 INFO L82 PathProgramCache]: Analyzing trace with hash -191782558, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:47:59,552 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:47:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:47:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:47:59,588 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 04:47:59,596 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-04 04:47:59,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 04:47:59 BoogieIcfgContainer [2018-02-04 04:47:59,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 04:47:59,604 INFO L168 Benchmark]: Toolchain (without parser) took 1871.27 ms. Allocated memory was 393.2 MB in the beginning and 605.6 MB in the end (delta: 212.3 MB). Free memory was 350.1 MB in the beginning and 554.4 MB in the end (delta: -204.3 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-02-04 04:47:59,605 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 393.2 MB. Free memory is still 356.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:47:59,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 137.08 ms. Allocated memory is still 393.2 MB. Free memory was 350.1 MB in the beginning and 336.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:47:59,606 INFO L168 Benchmark]: Boogie Preprocessor took 17.80 ms. Allocated memory is still 393.2 MB. Free memory was 336.9 MB in the beginning and 335.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:47:59,606 INFO L168 Benchmark]: RCFGBuilder took 126.21 ms. Allocated memory is still 393.2 MB. Free memory was 335.6 MB in the beginning and 321.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-04 04:47:59,607 INFO L168 Benchmark]: TraceAbstraction took 1587.66 ms. Allocated memory was 393.2 MB in the beginning and 605.6 MB in the end (delta: 212.3 MB). Free memory was 321.5 MB in the beginning and 554.4 MB in the end (delta: -232.8 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:47:59,609 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 393.2 MB. Free memory is still 356.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 137.08 ms. Allocated memory is still 393.2 MB. Free memory was 350.1 MB in the beginning and 336.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 17.80 ms. Allocated memory is still 393.2 MB. Free memory was 336.9 MB in the beginning and 335.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 126.21 ms. Allocated memory is still 393.2 MB. Free memory was 335.6 MB in the beginning and 321.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1587.66 ms. Allocated memory was 393.2 MB in the beginning and 605.6 MB in the end (delta: 212.3 MB). Free memory was 321.5 MB in the beginning and 554.4 MB in the end (delta: -232.8 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1444] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={7:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={7:0}, malloc(size)={7:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={7:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] COND TRUE \read(*p) VAL [p={7:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}, p={7:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); [L1438] FCALL free(q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 3 error locations. UNSAFE Result, 1.5s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 154 SDtfs, 126 SDslu, 364 SDs, 0 SdLazy, 487 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 20/22 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, 7 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 7485 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 20/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-47-59-622.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_04-47-59-622.csv Received shutdown request...