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_test9_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:52:34,747 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:52:34,748 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:52:34,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:52:34,758 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:52:34,758 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:52:34,759 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:52:34,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:52:34,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:52:34,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:52:34,763 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:52:34,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:52:34,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:52:34,765 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:52:34,766 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:52:34,768 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:52:34,769 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:52:34,771 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:52:34,772 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:52:34,773 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:52:34,774 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:52:34,778 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:52:34,779 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:52:34,779 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 04:52:34,788 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:52:34,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:52:34,790 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:52:34,790 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:52:34,790 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:52:34,790 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:52:34,790 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:52:34,790 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:52:34,791 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:52:34,791 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:52:34,791 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:52:34,791 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:52:34,791 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:52:34,791 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:52:34,791 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:52:34,792 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:52:34,792 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:52:34,792 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:52:34,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:52:34,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:52:34,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:52:34,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:52:34,793 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:52:34,793 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:52:34,793 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:34,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:52:34,828 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:52:34,830 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:52:34,831 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:52:34,831 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:52:34,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test9_true-valid-memsafety_true-termination.i [2018-02-04 04:52:34,965 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:52:34,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:52:34,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:52:34,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:52:34,973 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:52:34,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:52:34" (1/1) ... [2018-02-04 04:52:34,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3df386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:34, skipping insertion in model container [2018-02-04 04:52:34,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:52:34" (1/1) ... [2018-02-04 04:52:34,991 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:52:35,025 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:52:35,103 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:52:35,112 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:52:35,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35 WrapperNode [2018-02-04 04:52:35,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:52:35,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:52:35,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:52:35,118 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:52:35,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (1/1) ... [2018-02-04 04:52:35,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (1/1) ... [2018-02-04 04:52:35,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (1/1) ... [2018-02-04 04:52:35,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (1/1) ... [2018-02-04 04:52:35,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (1/1) ... [2018-02-04 04:52:35,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (1/1) ... [2018-02-04 04:52:35,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (1/1) ... [2018-02-04 04:52:35,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:52:35,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:52:35,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:52:35,142 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:52:35,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (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 04:52:35,175 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:52:35,175 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:52:35,175 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:52:35,175 INFO L136 BoogieDeclarations]: Found implementation of procedure probe_9 [2018-02-04 04:52:35,175 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_9 [2018-02-04 04:52:35,175 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:52:35,175 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:52:35,175 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:52:35,175 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:52:35,175 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:52:35,175 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure probe_9 [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_9 [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:52:35,176 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:52:35,280 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:52:35,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:52:35 BoogieIcfgContainer [2018-02-04 04:52:35,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:52:35,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:52:35,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:52:35,284 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:52:35,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:52:34" (1/3) ... [2018-02-04 04:52:35,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5644134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:52:35, skipping insertion in model container [2018-02-04 04:52:35,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:35" (2/3) ... [2018-02-04 04:52:35,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5644134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:52:35, skipping insertion in model container [2018-02-04 04:52:35,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:52:35" (3/3) ... [2018-02-04 04:52:35,286 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test9_true-valid-memsafety_true-termination.i [2018-02-04 04:52:35,291 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:52:35,295 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 04:52:35,324 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:52:35,324 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:52:35,324 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:52:35,324 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:52:35,324 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:52:35,324 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:52:35,324 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:52:35,325 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:52:35,325 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:52:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-02-04 04:52:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:52:35,340 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:35,341 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 04:52:35,341 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 04:52:35,345 INFO L82 PathProgramCache]: Analyzing trace with hash 637985235, 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 04:52:35,353 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:35,504 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 04:52:35,523 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:35,524 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:52:35,524 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:35,525 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 04:52:35,525 INFO L182 omatonBuilderFactory]: Interpolants [51#(= 0 ~a9.offset), 52#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 37#true, 53#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |old(#length)| |#length|)), 38#false, 58#(= 0 |probe_9_#t~ret2.offset|), 59#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 60#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 04:52:35,525 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 04:52:35,526 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:35,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:35,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:35,535 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 8 states. [2018-02-04 04:52:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:35,812 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-02-04 04:52:35,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:35,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-04 04:52:35,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:35,822 INFO L225 Difference]: With dead ends: 56 [2018-02-04 04:52:35,823 INFO L226 Difference]: Without dead ends: 48 [2018-02-04 04:52:35,824 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 04:52:35,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-04 04:52:35,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-02-04 04:52:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-02-04 04:52:35,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-02-04 04:52:35,854 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2018-02-04 04:52:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:35,854 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-02-04 04:52:35,854 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-02-04 04:52:35,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:52:35,855 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:35,855 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 04:52:35,855 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 04:52:35,856 INFO L82 PathProgramCache]: Analyzing trace with hash 637985236, 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 04:52:35,859 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:35,925 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 04:52:35,950 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:35,951 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:52:35,951 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:35,951 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 04:52:35,951 INFO L182 omatonBuilderFactory]: Interpolants [194#(= 0 |probe_9_#t~ret2.base|), 195#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 196#(= 0 |ldv_malloc_#res.base|), 187#(= 0 ~a9.base), 188#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 173#true, 189#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |old(#length)| |#length|)), 174#false] [2018-02-04 04:52:35,951 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 04:52:35,953 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:35,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:35,953 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:35,953 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 8 states. [2018-02-04 04:52:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:36,183 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2018-02-04 04:52:36,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:36,183 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-04 04:52:36,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:36,184 INFO L225 Difference]: With dead ends: 53 [2018-02-04 04:52:36,184 INFO L226 Difference]: Without dead ends: 40 [2018-02-04 04:52:36,185 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 04:52:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-04 04:52:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-02-04 04:52:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 04:52:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-02-04 04:52:36,189 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 20 [2018-02-04 04:52:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:36,189 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-02-04 04:52:36,189 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-02-04 04:52:36,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 04:52:36,190 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:36,190 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, 1, 1] [2018-02-04 04:52:36,190 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 04:52:36,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1778317329, 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 04:52:36,197 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,284 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 04:52:36,305 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:36,306 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:52:36,306 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:36,306 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 04:52:36,306 INFO L182 omatonBuilderFactory]: Interpolants [325#(= 0 |probe_9_#t~ret2.offset|), 326#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 327#(= 0 |ldv_malloc_#t~malloc1.offset|), 328#(= 0 |ldv_malloc_#res.offset|), 300#true, 316#(= 0 ~a9.offset), 301#false, 317#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 318#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |old(#length)| |#length|))] [2018-02-04 04:52:36,306 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 04:52:36,306 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:52:36,307 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:52:36,307 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:52:36,307 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 9 states. [2018-02-04 04:52:36,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:36,417 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-02-04 04:52:36,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:36,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-02-04 04:52:36,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:36,418 INFO L225 Difference]: With dead ends: 38 [2018-02-04 04:52:36,418 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 04:52:36,418 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-02-04 04:52:36,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 04:52:36,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-02-04 04:52:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-04 04:52:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-02-04 04:52:36,421 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 22 [2018-02-04 04:52:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:36,421 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-02-04 04:52:36,421 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:52:36,421 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-02-04 04:52:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 04:52:36,421 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:36,422 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, 1, 1] [2018-02-04 04:52:36,422 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 04:52:36,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1778317330, 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 04:52:36,424 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,446 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:52:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,468 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:52:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,508 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 04:52:36,532 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:36,533 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:52:36,533 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:36,533 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 04:52:36,533 INFO L182 omatonBuilderFactory]: Interpolants [416#true, 432#(= 1 (select |#valid| ~a9.base)), 417#false, 433#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 434#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |old(#length)| |#length|)), 441#(= 1 (select |#valid| |probe_9_#t~ret2.base|)), 442#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 443#(= 1 (select |#valid| |ldv_malloc_#t~malloc1.base|)), 444#(= 1 (select |#valid| |ldv_malloc_#res.base|))] [2018-02-04 04:52:36,533 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 04:52:36,534 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:52:36,534 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:52:36,534 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:52:36,534 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 9 states. [2018-02-04 04:52:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:36,606 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-02-04 04:52:36,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:36,607 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-02-04 04:52:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:36,607 INFO L225 Difference]: With dead ends: 38 [2018-02-04 04:52:36,607 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 04:52:36,608 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 04:52:36,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 04:52:36,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2018-02-04 04:52:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-02-04 04:52:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-02-04 04:52:36,610 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2018-02-04 04:52:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:36,610 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-02-04 04:52:36,610 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:52:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-02-04 04:52:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 04:52:36,611 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:36,611 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, 1, 1, 1, 1] [2018-02-04 04:52:36,611 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 04:52:36,611 INFO L82 PathProgramCache]: Analyzing trace with hash -431737374, 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 04:52:36,614 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,678 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 04:52:36,693 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:36,693 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:52:36,693 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:36,694 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 04:52:36,694 INFO L182 omatonBuilderFactory]: Interpolants [562#(= 0 |probe_9_#res|), 563#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 519#true, 520#false, 554#(= 0 |entry_point_#t~ret3|), 555#(= 0 entry_point_~ret~0), 541#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 542#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |old(#length)| |#length|))] [2018-02-04 04:52:36,694 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 04:52:36,694 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:36,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:36,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:36,694 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 8 states. [2018-02-04 04:52:36,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:36,734 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-02-04 04:52:36,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:52:36,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-02-04 04:52:36,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:36,734 INFO L225 Difference]: With dead ends: 36 [2018-02-04 04:52:36,735 INFO L226 Difference]: Without dead ends: 36 [2018-02-04 04:52:36,735 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:52:36,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-04 04:52:36,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-02-04 04:52:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-02-04 04:52:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-02-04 04:52:36,737 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 24 [2018-02-04 04:52:36,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:36,737 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-02-04 04:52:36,737 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:36,737 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-02-04 04:52:36,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 04:52:36,737 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:36,737 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, 1, 1, 1, 1] [2018-02-04 04:52:36,738 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 04:52:36,738 INFO L82 PathProgramCache]: Analyzing trace with hash 2055775459, 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 04:52:36,740 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,818 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 04:52:36,819 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:36,819 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-04 04:52:36,819 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:36,820 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 04:52:36,820 INFO L182 omatonBuilderFactory]: Interpolants [658#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 659#(and (= ~a9.base |old(~a9.base)|) (= |#valid| |old(#valid)|) (= ~a9.offset |old(~a9.offset)|) (= |old(#length)| |#length|)), 677#(not (= 0 |probe_9_#t~ret2.base|)), 678#(not (= 0 ~a9.base)), 679#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 680#(not (= 0 |ldv_malloc_#t~malloc1.base|)), 681#(not (= 0 |ldv_malloc_#res.base|)), 636#true, 637#false] [2018-02-04 04:52:36,820 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 04:52:36,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:52:36,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:52:36,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:52:36,821 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 9 states. [2018-02-04 04:52:36,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:36,891 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2018-02-04 04:52:36,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:36,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-02-04 04:52:36,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:36,892 INFO L225 Difference]: With dead ends: 29 [2018-02-04 04:52:36,892 INFO L226 Difference]: Without dead ends: 29 [2018-02-04 04:52:36,893 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 04:52:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-02-04 04:52:36,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-02-04 04:52:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-02-04 04:52:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2018-02-04 04:52:36,895 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 24 [2018-02-04 04:52:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:36,896 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2018-02-04 04:52:36,896 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:52:36,896 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2018-02-04 04:52:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-04 04:52:36,897 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:36,897 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:52:36,897 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-02-04 04:52:36,897 INFO L82 PathProgramCache]: Analyzing trace with hash 221087613, 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 04:52:36,900 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:36,912 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:52:36,913 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (array-ext (Array Int Int) (Array Int Int)) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:321) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.createTerm(Parser.java:802) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1304) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseInterpolants(Executor.java:255) at de.uni_freiburg.informatik.ultimate.smtsolver.external.ScriptorWithGetInterpolants.readInterpolants(ScriptorWithGetInterpolants.java:136) at de.uni_freiburg.informatik.ultimate.smtsolver.external.ScriptorWithGetInterpolants.getInterpolants(ScriptorWithGetInterpolants.java:64) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.getInterpolants(DiffWrapperScript.java:260) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:186) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:196) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedTraceAbstractionRefinementStrategy.getTraceCheck(FixedTraceAbstractionRefinementStrategy.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-04 04:52:36,915 INFO L168 Benchmark]: Toolchain (without parser) took 1949.56 ms. Allocated memory was 403.2 MB in the beginning and 590.9 MB in the end (delta: 187.7 MB). Free memory was 357.0 MB in the beginning and 367.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 176.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:36,916 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 403.2 MB. Free memory is still 362.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:52:36,916 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.53 ms. Allocated memory is still 403.2 MB. Free memory was 357.0 MB in the beginning and 343.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:36,916 INFO L168 Benchmark]: Boogie Preprocessor took 24.52 ms. Allocated memory is still 403.2 MB. Free memory was 343.8 MB in the beginning and 341.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:36,917 INFO L168 Benchmark]: RCFGBuilder took 138.21 ms. Allocated memory is still 403.2 MB. Free memory was 341.1 MB in the beginning and 326.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:36,917 INFO L168 Benchmark]: TraceAbstraction took 1633.24 ms. Allocated memory was 403.2 MB in the beginning and 590.9 MB in the end (delta: 187.7 MB). Free memory was 326.6 MB in the beginning and 367.8 MB in the end (delta: -41.2 MB). Peak memory consumption was 146.5 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:36,919 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 403.2 MB. Free memory is still 362.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 150.53 ms. Allocated memory is still 403.2 MB. Free memory was 357.0 MB in the beginning and 343.8 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.52 ms. Allocated memory is still 403.2 MB. Free memory was 343.8 MB in the beginning and 341.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 138.21 ms. Allocated memory is still 403.2 MB. Free memory was 341.1 MB in the beginning and 326.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1633.24 ms. Allocated memory was 403.2 MB in the beginning and 590.9 MB in the end (delta: 187.7 MB). Free memory was 326.6 MB in the beginning and 367.8 MB in the end (delta: -41.2 MB). Peak memory consumption was 146.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (array-ext (Array Int Int) (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (array-ext (Array Int Int) (Array Int Int)): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:321) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-52-36-928.csv Received shutdown request...