java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:52:31,202 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:52:31,203 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:52:31,212 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:52:31,213 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:52:31,213 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:52:31,214 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:52:31,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:52:31,216 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:52:31,217 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:52:31,217 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:52:31,218 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:52:31,218 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:52:31,219 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:52:31,220 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:52:31,222 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:52:31,223 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:52:31,225 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:52:31,226 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:52:31,227 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:52:31,228 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:52:31,233 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 04:52:31,243 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:52:31,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:52:31,244 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:52:31,244 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:52:31,244 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:52:31,244 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:52:31,244 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:52:31,245 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:52:31,245 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:52:31,245 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:52:31,245 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:52:31,245 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:52:31,245 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:52:31,246 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:52:31,246 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:52:31,246 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:52:31,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:52:31,246 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:52:31,246 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:52:31,246 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:52:31,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:52:31,247 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:52:31,247 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:52:31,247 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:52:31,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:31,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:52:31,282 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:52:31,286 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:52:31,288 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:52:31,288 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:52:31,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i [2018-02-04 04:52:31,437 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:52:31,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:52:31,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:52:31,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:52:31,442 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:52:31,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b089594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31, skipping insertion in model container [2018-02-04 04:52:31,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,454 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:52:31,486 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:52:31,565 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:52:31,576 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:52:31,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31 WrapperNode [2018-02-04 04:52:31,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:52:31,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:52:31,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:52:31,582 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:52:31,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (1/1) ... [2018-02-04 04:52:31,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:52:31,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:52:31,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:52:31,606 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:52:31,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (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 04:52:31,639 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:52:31,640 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:52:31,640 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:52:31,640 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-02-04 04:52:31,640 INFO L136 BoogieDeclarations]: Found implementation of procedure free_8 [2018-02-04 04:52:31,640 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:52:31,640 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:52:31,640 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:52:31,640 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:52:31,640 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:52:31,640 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:52:31,640 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:52:31,640 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:52:31,641 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:52:31,641 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-02-04 04:52:31,641 INFO L128 BoogieDeclarations]: Found specification of procedure free_8 [2018-02-04 04:52:31,641 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:52:31,641 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:52:31,641 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:52:31,641 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:52:31,738 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:52:31,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:52:31 BoogieIcfgContainer [2018-02-04 04:52:31,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:52:31,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:52:31,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:52:31,741 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:52:31,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:52:31" (1/3) ... [2018-02-04 04:52:31,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b60f37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:52:31, skipping insertion in model container [2018-02-04 04:52:31,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:31" (2/3) ... [2018-02-04 04:52:31,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b60f37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:52:31, skipping insertion in model container [2018-02-04 04:52:31,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:52:31" (3/3) ... [2018-02-04 04:52:31,743 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test8_true-valid-memsafety_true-termination.i [2018-02-04 04:52:31,748 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:52:31,752 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 04:52:31,780 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:52:31,781 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:52:31,781 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:52:31,781 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:52:31,781 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:52:31,781 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:52:31,781 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:52:31,781 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:52:31,782 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:52:31,789 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-02-04 04:52:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:52:31,798 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:31,798 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:52:31,798 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:52:31,801 INFO L82 PathProgramCache]: Analyzing trace with hash 132716426, 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 04:52:31,809 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,013 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 04:52:32,036 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:32,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:52:32,037 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:32,037 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 04:52:32,038 INFO L182 omatonBuilderFactory]: Interpolants [48#(= 0 ~a8.offset), 49#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|)), 50#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|)), 35#true, 36#false, 55#(= 0 |alloc_8_#t~ret2.offset|), 56#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 57#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 04:52:32,038 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 04:52:32,038 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:32,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:32,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:32,048 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 8 states. [2018-02-04 04:52:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:32,313 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-02-04 04:52:32,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:32,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-02-04 04:52:32,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:32,320 INFO L225 Difference]: With dead ends: 48 [2018-02-04 04:52:32,320 INFO L226 Difference]: Without dead ends: 40 [2018-02-04 04:52:32,321 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-02-04 04:52:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-04 04:52:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-02-04 04:52:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 04:52:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-02-04 04:52:32,346 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 18 [2018-02-04 04:52:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:32,346 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-02-04 04:52:32,346 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-02-04 04:52:32,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:52:32,347 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:32,347 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:52:32,347 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:52:32,347 INFO L82 PathProgramCache]: Analyzing trace with hash 132716427, 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 04:52:32,350 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,451 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 04:52:32,477 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:32,477 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:52:32,477 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:32,477 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 04:52:32,478 INFO L182 omatonBuilderFactory]: Interpolants [176#(= 0 |alloc_8_#t~ret2.base|), 177#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 178#(= 0 |ldv_malloc_#res.base|), 169#(= 0 ~a8.base), 170#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|)), 171#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|)), 156#true, 157#false] [2018-02-04 04:52:32,478 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 04:52:32,479 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:32,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:32,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:32,480 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 8 states. [2018-02-04 04:52:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:32,638 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2018-02-04 04:52:32,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:32,639 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-02-04 04:52:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:32,639 INFO L225 Difference]: With dead ends: 46 [2018-02-04 04:52:32,639 INFO L226 Difference]: Without dead ends: 32 [2018-02-04 04:52:32,640 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 04:52:32,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-04 04:52:32,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2018-02-04 04:52:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-02-04 04:52:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-02-04 04:52:32,643 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 18 [2018-02-04 04:52:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:32,643 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-02-04 04:52:32,643 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-02-04 04:52:32,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:52:32,644 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:32,644 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 04:52:32,644 INFO L371 AbstractCegarLoop]: === Iteration 3 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:52:32,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1026806264, 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 04:52:32,647 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,753 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 04:52:32,774 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:32,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:52:32,774 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:32,774 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 04:52:32,774 INFO L182 omatonBuilderFactory]: Interpolants [289#(= 0 |alloc_8_#t~ret2.offset|), 290#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 291#(= 0 |ldv_malloc_#t~malloc1.offset|), 292#(= 0 |ldv_malloc_#res.offset|), 280#(= 0 ~a8.offset), 265#true, 281#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|)), 266#false, 282#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|))] [2018-02-04 04:52:32,774 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 04:52:32,775 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:52:32,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:52:32,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:52:32,775 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 9 states. [2018-02-04 04:52:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:32,881 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-02-04 04:52:32,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:32,882 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-04 04:52:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:32,882 INFO L225 Difference]: With dead ends: 30 [2018-02-04 04:52:32,883 INFO L226 Difference]: Without dead ends: 30 [2018-02-04 04:52:32,883 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-02-04 04:52:32,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-04 04:52:32,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-02-04 04:52:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 04:52:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-02-04 04:52:32,885 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 20 [2018-02-04 04:52:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:32,885 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-02-04 04:52:32,885 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:52:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-02-04 04:52:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:52:32,886 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:32,886 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 04:52:32,886 INFO L371 AbstractCegarLoop]: === Iteration 4 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:52:32,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1026806263, 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 04:52:32,888 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,897 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:52:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,924 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:52:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:32,938 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:52:32,940 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:52:32,940 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:52:32,960 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-04 04:52:32,961 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:52:32,962 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:52:32,962 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 04:52:32,977 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:52:32,977 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:52:32,979 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-04 04:52:32,979 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:52:32,981 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:52:32,981 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 04:52:32,990 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 04:52:33,018 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:33,018 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:52:33,018 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:33,018 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 04:52:33,019 INFO L182 omatonBuilderFactory]: Interpolants [386#(= 1 (select |#valid| |alloc_8_#t~ret2.base|)), 387#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 388#(= 1 (select |#valid| |ldv_malloc_#t~malloc1.base|)), 389#(= 1 (select |#valid| |ldv_malloc_#res.base|)), 377#(= 1 (select |#valid| ~a8.base)), 362#true, 378#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|)), 363#false, 379#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|))] [2018-02-04 04:52:33,019 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 04:52:33,019 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 04:52:33,019 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 04:52:33,019 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-04 04:52:33,019 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 9 states. [2018-02-04 04:52:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:33,110 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-02-04 04:52:33,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:33,110 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-04 04:52:33,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:33,110 INFO L225 Difference]: With dead ends: 30 [2018-02-04 04:52:33,110 INFO L226 Difference]: Without dead ends: 30 [2018-02-04 04:52:33,111 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 04:52:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-04 04:52:33,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-02-04 04:52:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 04:52:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-02-04 04:52:33,113 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2018-02-04 04:52:33,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:33,113 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-02-04 04:52:33,113 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 04:52:33,113 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-02-04 04:52:33,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:52:33,113 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:33,113 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 04:52:33,113 INFO L371 AbstractCegarLoop]: === Iteration 5 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:52:33,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1127655280, 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 04:52:33,116 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,232 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 04:52:33,233 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:33,233 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-02-04 04:52:33,233 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:33,233 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 04:52:33,233 INFO L182 omatonBuilderFactory]: Interpolants [499#(not (= 0 |alloc_8_#t~ret2.base|)), 500#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 501#(not (= 0 |ldv_malloc_#t~malloc1.base|)), 454#true, 502#(not (= 0 |ldv_malloc_#res.base|)), 455#false, 503#(= |#valid| |old(#valid)|), 504#(= 0 ~a8.base), 489#(not (= 0 ~a8.base)), 477#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~a8.offset |old(~a8.offset)|)), 478#(and (= ~a8.base |old(~a8.base)|) (= |#valid| |old(#valid)|) (= ~a8.offset |old(~a8.offset)|) (= |old(#length)| |#length|))] [2018-02-04 04:52:33,233 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 04:52:33,233 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-02-04 04:52:33,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-02-04 04:52:33,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:33,234 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2018-02-04 04:52:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:33,323 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2018-02-04 04:52:33,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 04:52:33,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2018-02-04 04:52:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:33,324 INFO L225 Difference]: With dead ends: 27 [2018-02-04 04:52:33,324 INFO L226 Difference]: Without dead ends: 27 [2018-02-04 04:52:33,324 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-02-04 04:52:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-02-04 04:52:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-02-04 04:52:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 04:52:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2018-02-04 04:52:33,326 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 25 [2018-02-04 04:52:33,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:33,326 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2018-02-04 04:52:33,326 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-02-04 04:52:33,326 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2018-02-04 04:52:33,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-04 04:52:33,326 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:33,326 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] [2018-02-04 04:52:33,326 INFO L371 AbstractCegarLoop]: === Iteration 6 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 04:52:33,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1553172630, 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 04:52:33,329 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,340 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:52:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:33,369 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:52:33,370 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.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:347) 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 04:52:33,372 INFO L168 Benchmark]: Toolchain (without parser) took 1934.81 ms. Allocated memory was 403.7 MB in the beginning and 613.9 MB in the end (delta: 210.2 MB). Free memory was 360.6 MB in the beginning and 451.2 MB in the end (delta: -90.6 MB). Peak memory consumption was 119.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:33,373 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 403.7 MB. Free memory is still 367.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:52:33,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.35 ms. Allocated memory is still 403.7 MB. Free memory was 360.6 MB in the beginning and 348.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:33,374 INFO L168 Benchmark]: Boogie Preprocessor took 23.20 ms. Allocated memory is still 403.7 MB. Free memory was 347.4 MB in the beginning and 346.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:33,374 INFO L168 Benchmark]: RCFGBuilder took 133.27 ms. Allocated memory is still 403.7 MB. Free memory was 346.0 MB in the beginning and 332.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:33,374 INFO L168 Benchmark]: TraceAbstraction took 1632.57 ms. Allocated memory was 403.7 MB in the beginning and 613.9 MB in the end (delta: 210.2 MB). Free memory was 332.0 MB in the beginning and 451.2 MB in the end (delta: -119.2 MB). Peak memory consumption was 91.0 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:33,376 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 403.7 MB. Free memory is still 367.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 143.35 ms. Allocated memory is still 403.7 MB. Free memory was 360.6 MB in the beginning and 348.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.20 ms. Allocated memory is still 403.7 MB. Free memory was 347.4 MB in the beginning and 346.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 133.27 ms. Allocated memory is still 403.7 MB. Free memory was 346.0 MB in the beginning and 332.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1632.57 ms. Allocated memory was 403.7 MB in the beginning and 613.9 MB in the end (delta: 210.2 MB). Free memory was 332.0 MB in the beginning and 451.2 MB in the end (delta: -119.2 MB). Peak memory consumption was 91.0 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_test8_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-52-33-384.csv Received shutdown request...