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_test7_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:52:27,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:52:27,534 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:52:27,547 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:52:27,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:52:27,548 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:52:27,548 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:52:27,549 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:52:27,550 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:52:27,551 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:52:27,552 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:52:27,552 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:52:27,553 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:52:27,554 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:52:27,555 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:52:27,556 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:52:27,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:52:27,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:52:27,560 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:52:27,561 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:52:27,563 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:52:27,566 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:52:27,567 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:52:27,567 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 04:52:27,577 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:52:27,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:52:27,578 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:52:27,578 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:52:27,578 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:52:27,578 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:52:27,579 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:52:27,579 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:52:27,579 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:52:27,579 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:52:27,579 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:52:27,579 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:52:27,579 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:52:27,580 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:52:27,580 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:52:27,580 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:52:27,580 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:52:27,580 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:52:27,580 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:52:27,580 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:52:27,581 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:52:27,581 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:52:27,581 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:52:27,581 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:52:27,581 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:27,608 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:52:27,617 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:52:27,620 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:52:27,621 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:52:27,622 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:52:27,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test7_true-valid-memsafety_true-termination.i [2018-02-04 04:52:27,771 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:52:27,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:52:27,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:52:27,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:52:27,778 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:52:27,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692a7dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27, skipping insertion in model container [2018-02-04 04:52:27,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,795 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:52:27,831 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:52:27,926 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:52:27,941 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:52:27,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27 WrapperNode [2018-02-04 04:52:27,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:52:27,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:52:27,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:52:27,950 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:52:27,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (1/1) ... [2018-02-04 04:52:27,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:52:27,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:52:27,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:52:27,976 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:52:27,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (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 04:52:28,016 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:52:28,017 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:52:28,017 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:52:28,017 INFO L136 BoogieDeclarations]: Found implementation of procedure f6 [2018-02-04 04:52:28,017 INFO L136 BoogieDeclarations]: Found implementation of procedure g6 [2018-02-04 04:52:28,017 INFO L136 BoogieDeclarations]: Found implementation of procedure probe1_6 [2018-02-04 04:52:28,017 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2018-02-04 04:52:28,017 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:52:28,017 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:52:28,018 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 04:52:28,018 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 04:52:28,018 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:52:28,018 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:52:28,018 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:52:28,018 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:52:28,018 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:52:28,018 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:52:28,019 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:52:28,019 INFO L128 BoogieDeclarations]: Found specification of procedure f6 [2018-02-04 04:52:28,019 INFO L128 BoogieDeclarations]: Found specification of procedure g6 [2018-02-04 04:52:28,019 INFO L128 BoogieDeclarations]: Found specification of procedure probe1_6 [2018-02-04 04:52:28,019 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_6 [2018-02-04 04:52:28,019 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:52:28,019 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:52:28,019 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:52:28,020 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:52:28,185 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:52:28,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:52:28 BoogieIcfgContainer [2018-02-04 04:52:28,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:52:28,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:52:28,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:52:28,188 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:52:28,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:52:27" (1/3) ... [2018-02-04 04:52:28,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@926365b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:52:28, skipping insertion in model container [2018-02-04 04:52:28,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:27" (2/3) ... [2018-02-04 04:52:28,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@926365b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:52:28, skipping insertion in model container [2018-02-04 04:52:28,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:52:28" (3/3) ... [2018-02-04 04:52:28,190 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test7_true-valid-memsafety_true-termination.i [2018-02-04 04:52:28,195 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:52:28,198 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-02-04 04:52:28,228 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:52:28,228 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:52:28,228 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:52:28,229 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:52:28,229 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:52:28,229 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:52:28,229 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:52:28,229 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:52:28,229 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:52:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-02-04 04:52:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 04:52:28,245 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:28,246 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] [2018-02-04 04:52:28,246 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-04 04:52:28,251 INFO L82 PathProgramCache]: Analyzing trace with hash -554404132, 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 04:52:28,262 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:28,404 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 04:52:28,435 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:28,435 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:52:28,436 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:28,436 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 04:52:28,436 INFO L182 omatonBuilderFactory]: Interpolants [80#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 65#true, 81#(= 0 |ldv_malloc_#res.offset|), 66#false, 74#(= 0 |probe1_6_#t~ret4.offset|), 75#(= 0 probe1_6_~p~0.offset), 79#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:52:28,436 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 04:52:28,437 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:52:28,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:52:28,448 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:52:28,450 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 7 states. [2018-02-04 04:52:28,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:28,716 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2018-02-04 04:52:28,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:28,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-02-04 04:52:28,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:28,725 INFO L225 Difference]: With dead ends: 82 [2018-02-04 04:52:28,726 INFO L226 Difference]: Without dead ends: 79 [2018-02-04 04:52:28,727 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:28,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-02-04 04:52:28,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2018-02-04 04:52:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-02-04 04:52:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2018-02-04 04:52:28,797 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 23 [2018-02-04 04:52:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:28,799 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2018-02-04 04:52:28,799 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:52:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2018-02-04 04:52:28,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 04:52:28,801 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:28,801 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] [2018-02-04 04:52:28,801 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-04 04:52:28,801 INFO L82 PathProgramCache]: Analyzing trace with hash -554404131, 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 04:52:28,804 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:28,874 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 04:52:28,904 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:28,904 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:52:28,904 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:28,905 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 04:52:28,905 INFO L182 omatonBuilderFactory]: Interpolants [257#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 258#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 243#true, 259#(= 0 |ldv_malloc_#res.base|), 244#false, 252#(= 0 |probe1_6_#t~ret4.base|), 253#(= 0 probe1_6_~p~0.base)] [2018-02-04 04:52:28,905 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 04:52:28,907 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:52:28,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:52:28,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:52:28,907 INFO L87 Difference]: Start difference. First operand 70 states and 80 transitions. Second operand 7 states. [2018-02-04 04:52:29,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:29,093 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2018-02-04 04:52:29,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:52:29,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-02-04 04:52:29,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:29,095 INFO L225 Difference]: With dead ends: 79 [2018-02-04 04:52:29,095 INFO L226 Difference]: Without dead ends: 79 [2018-02-04 04:52:29,096 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 04:52:29,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-02-04 04:52:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2018-02-04 04:52:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-02-04 04:52:29,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2018-02-04 04:52:29,102 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 23 [2018-02-04 04:52:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:29,103 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2018-02-04 04:52:29,103 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:52:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2018-02-04 04:52:29,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 04:52:29,104 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:29,104 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] [2018-02-04 04:52:29,104 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-04 04:52:29,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1190293187, 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) [2018-02-04 04:52:29,110 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,179 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 04:52:29,195 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:29,195 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-04 04:52:29,195 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:29,195 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 04:52:29,196 INFO L182 omatonBuilderFactory]: Interpolants [433#(= 3 |entry_point_#t~ret9|), 418#true, 434#(not (= 0 entry_point_~ret~1)), 419#false, 435#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 436#(and (= |#valid| |old(#valid)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 437#(= 3 probe1_6_~ret~0), 442#(= |probe1_6_#res| 3), 443#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|))] [2018-02-04 04:52:29,196 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 04:52:29,196 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:52:29,196 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:52:29,196 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:52:29,196 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand 9 states. [2018-02-04 04:52:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:29,391 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2018-02-04 04:52:29,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 04:52:29,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-02-04 04:52:29,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:29,392 INFO L225 Difference]: With dead ends: 86 [2018-02-04 04:52:29,393 INFO L226 Difference]: Without dead ends: 86 [2018-02-04 04:52:29,393 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-02-04 04:52:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-02-04 04:52:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2018-02-04 04:52:29,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-02-04 04:52:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2018-02-04 04:52:29,397 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 23 [2018-02-04 04:52:29,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:29,397 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2018-02-04 04:52:29,397 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:52:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2018-02-04 04:52:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:52:29,398 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:29,398 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] [2018-02-04 04:52:29,399 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-04 04:52:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash 787364094, 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 04:52:29,402 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:52:29,464 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:29,465 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:52:29,465 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:52:29,465 INFO L182 omatonBuilderFactory]: Interpolants [626#(= 0 |probe1_6_#t~ret4.offset|), 627#(= 0 probe1_6_~p~0.offset), 615#true, 631#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 616#false, 632#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 633#(= 0 |ldv_malloc_#t~malloc1.offset|), 634#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 04:52:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:52:29,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:29,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:29,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:29,466 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 8 states. [2018-02-04 04:52:29,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:29,628 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2018-02-04 04:52:29,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 04:52:29,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-02-04 04:52:29,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:29,629 INFO L225 Difference]: With dead ends: 81 [2018-02-04 04:52:29,629 INFO L226 Difference]: Without dead ends: 81 [2018-02-04 04:52:29,629 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-02-04 04:52:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-02-04 04:52:29,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 73. [2018-02-04 04:52:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-02-04 04:52:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2018-02-04 04:52:29,632 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 25 [2018-02-04 04:52:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:29,633 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2018-02-04 04:52:29,633 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2018-02-04 04:52:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:52:29,634 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:29,634 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] [2018-02-04 04:52:29,634 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-04 04:52:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash 787364095, 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 04:52:29,638 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,651 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:52:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,729 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 04:52:29,745 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:29,745 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:52:29,745 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:29,745 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 04:52:29,746 INFO L182 omatonBuilderFactory]: Interpolants [800#true, 816#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 801#false, 817#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 818#(= |#valid| |old(#valid)|), 819#(= |#valid| (store |old(#valid)| |ldv_malloc_#t~malloc1.base| 1)), 820#(= |#valid| (store |old(#valid)| |ldv_malloc_#res.base| 1)), 811#(= 1 (select |#valid| |probe1_6_#t~ret4.base|)), 812#(= 1 (select |#valid| probe1_6_~p~0.base))] [2018-02-04 04:52:29,746 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 04:52:29,746 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:52:29,746 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:52:29,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:52:29,746 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 9 states. [2018-02-04 04:52:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:29,914 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2018-02-04 04:52:29,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:52:29,914 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-02-04 04:52:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:29,915 INFO L225 Difference]: With dead ends: 82 [2018-02-04 04:52:29,915 INFO L226 Difference]: Without dead ends: 82 [2018-02-04 04:52:29,915 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-02-04 04:52:29,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 61. [2018-02-04 04:52:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-02-04 04:52:29,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2018-02-04 04:52:29,918 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 25 [2018-02-04 04:52:29,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:29,918 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2018-02-04 04:52:29,918 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:52:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2018-02-04 04:52:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:52:29,919 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:29,919 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] [2018-02-04 04:52:29,919 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-04 04:52:29,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1459091407, 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 04:52:29,921 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:29,932 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:52:29,933 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 04:52:29,935 INFO L168 Benchmark]: Toolchain (without parser) took 2163.81 ms. Allocated memory was 405.8 MB in the beginning and 627.0 MB in the end (delta: 221.2 MB). Free memory was 362.5 MB in the beginning and 500.2 MB in the end (delta: -137.7 MB). Peak memory consumption was 83.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:29,936 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 405.8 MB. Free memory is still 367.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:52:29,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.35 ms. Allocated memory is still 405.8 MB. Free memory was 362.5 MB in the beginning and 349.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:29,937 INFO L168 Benchmark]: Boogie Preprocessor took 26.06 ms. Allocated memory is still 405.8 MB. Free memory was 349.3 MB in the beginning and 346.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:29,937 INFO L168 Benchmark]: RCFGBuilder took 209.53 ms. Allocated memory is still 405.8 MB. Free memory was 346.6 MB in the beginning and 326.8 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:29,938 INFO L168 Benchmark]: TraceAbstraction took 1748.99 ms. Allocated memory was 405.8 MB in the beginning and 627.0 MB in the end (delta: 221.2 MB). Free memory was 326.8 MB in the beginning and 500.2 MB in the end (delta: -173.4 MB). Peak memory consumption was 47.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:29,940 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 405.8 MB. Free memory is still 367.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 176.35 ms. Allocated memory is still 405.8 MB. Free memory was 362.5 MB in the beginning and 349.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.06 ms. Allocated memory is still 405.8 MB. Free memory was 349.3 MB in the beginning and 346.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 209.53 ms. Allocated memory is still 405.8 MB. Free memory was 346.6 MB in the beginning and 326.8 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1748.99 ms. Allocated memory was 405.8 MB in the beginning and 627.0 MB in the end (delta: 221.2 MB). Free memory was 326.8 MB in the beginning and 500.2 MB in the end (delta: -173.4 MB). Peak memory consumption was 47.9 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_test7_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-52-29-948.csv Received shutdown request...