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_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 03:15:17,595 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 03:15:17,596 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 03:15:17,606 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 03:15:17,606 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 03:15:17,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 03:15:17,607 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 03:15:17,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 03:15:17,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 03:15:17,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 03:15:17,612 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 03:15:17,612 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 03:15:17,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 03:15:17,613 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 03:15:17,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 03:15:17,616 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 03:15:17,618 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 03:15:17,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 03:15:17,620 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 03:15:17,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 03:15:17,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 03:15:17,628 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-02-04 03:15:17,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 03:15:17,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 03:15:17,639 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 03:15:17,639 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 03:15:17,639 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 03:15:17,640 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 03:15:17,640 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 03:15:17,640 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 03:15:17,640 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 03:15:17,640 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 03:15:17,640 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 03:15:17,640 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 03:15:17,641 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 03:15:17,641 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 03:15:17,641 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 03:15:17,641 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 03:15:17,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 03:15:17,641 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 03:15:17,641 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 03:15:17,642 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 03:15:17,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 03:15:17,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 03:15:17,642 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-04 03:15:17,670 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 03:15:17,681 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 03:15:17,684 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 03:15:17,685 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 03:15:17,685 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 03:15:17,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-02-04 03:15:17,833 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 03:15:17,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 03:15:17,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 03:15:17,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 03:15:17,842 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 03:15:17,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:17,846 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 03:15:17, skipping insertion in model container [2018-02-04 03:15:17,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:17,862 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 03:15:17,898 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 03:15:17,981 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 03:15:17,990 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 03:15:17,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17 WrapperNode [2018-02-04 03:15:17,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 03:15:17,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 03:15:17,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 03:15:17,995 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 03:15:18,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:18,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:18,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:18,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:18,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:18,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:18,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (1/1) ... [2018-02-04 03:15:18,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 03:15:18,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 03:15:18,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 03:15:18,017 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 03:15:18,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (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 03:15:18,057 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 03:15:18,057 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 03:15:18,057 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 03:15:18,057 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 03:15:18,058 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 03:15:18,058 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 03:15:18,162 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 03:15:18,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 03:15:18 BoogieIcfgContainer [2018-02-04 03:15:18,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 03:15:18,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 03:15:18,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 03:15:18,165 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 03:15:18,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 03:15:17" (1/3) ... [2018-02-04 03:15:18,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c760e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 03:15:18, skipping insertion in model container [2018-02-04 03:15:18,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 03:15:17" (2/3) ... [2018-02-04 03:15:18,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c760e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 03:15:18, skipping insertion in model container [2018-02-04 03:15:18,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 03:15:18" (3/3) ... [2018-02-04 03:15:18,167 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-02-04 03:15:18,172 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 03:15:18,177 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 03:15:18,208 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 03:15:18,208 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 03:15:18,209 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-04 03:15:18,209 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 03:15:18,209 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 03:15:18,209 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 03:15:18,209 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 03:15:18,209 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 03:15:18,210 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 03:15:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-02-04 03:15:18,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-04 03:15:18,230 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 03:15:18,230 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 03:15:18,231 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 03:15:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1713265670, now seen corresponding path program 1 times [2018-02-04 03:15:18,287 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 03:15:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 03:15:18,330 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 03:15:18,383 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 03:15:18,385 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 03:15:18,385 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 03:15:18,386 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 03:15:18,386 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 03:15:18,386 INFO L182 omatonBuilderFactory]: Interpolants [32#(= |#valid| |old(#valid)|), 30#true, 31#false] [2018-02-04 03:15:18,386 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 03:15:18,387 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 03:15:18,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 03:15:18,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 03:15:18,398 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2018-02-04 03:15:18,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 03:15:18,513 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-02-04 03:15:18,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 03:15:18,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-02-04 03:15:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 03:15:18,522 INFO L225 Difference]: With dead ends: 39 [2018-02-04 03:15:18,523 INFO L226 Difference]: Without dead ends: 33 [2018-02-04 03:15:18,524 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 03:15:18,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-04 03:15:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-02-04 03:15:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 03:15:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-02-04 03:15:18,548 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2018-02-04 03:15:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 03:15:18,548 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-02-04 03:15:18,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 03:15:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-02-04 03:15:18,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 03:15:18,550 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 03:15:18,550 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 03:15:18,550 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 03:15:18,551 INFO L82 PathProgramCache]: Analyzing trace with hash 295629500, now seen corresponding path program 1 times [2018-02-04 03:15:18,552 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 03:15:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 03:15:18,562 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 03:15:18,603 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 03:15:18,603 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 03:15:18,604 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 03:15:18,604 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 03:15:18,604 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 03:15:18,604 INFO L182 omatonBuilderFactory]: Interpolants [100#true, 101#false, 102#(not (= 0 |ldv_malloc_#t~malloc1.base|)), 103#(not (= 0 |ldv_malloc_#res.base|)), 104#(not (= 0 |entry_point_#t~ret2.base|)), 105#(not (= 0 entry_point_~p~0.base))] [2018-02-04 03:15:18,604 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 03:15:18,605 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 03:15:18,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 03:15:18,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 03:15:18,605 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states. [2018-02-04 03:15:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 03:15:18,633 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-02-04 03:15:18,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 03:15:18,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-02-04 03:15:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 03:15:18,634 INFO L225 Difference]: With dead ends: 35 [2018-02-04 03:15:18,634 INFO L226 Difference]: Without dead ends: 35 [2018-02-04 03:15:18,635 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-04 03:15:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-04 03:15:18,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2018-02-04 03:15:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 03:15:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-04 03:15:18,640 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2018-02-04 03:15:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 03:15:18,640 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-04 03:15:18,640 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 03:15:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-04 03:15:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 03:15:18,641 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 03:15:18,642 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 03:15:18,642 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 03:15:18,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005914, now seen corresponding path program 1 times [2018-02-04 03:15:18,643 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 03:15:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 03:15:18,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 03:15:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,689 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 03:15:18,690 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 03:15:18,690 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 03:15:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,690 INFO L182 omatonBuilderFactory]: Interpolants [167#true, 168#false, 169#(= 0 |ldv_malloc_#res.offset|), 170#(= 0 |entry_point_#t~ret3.offset|), 171#(= 0 entry_point_~q~0.offset)] [2018-02-04 03:15:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,690 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 03:15:18,691 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 03:15:18,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 03:15:18,691 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2018-02-04 03:15:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 03:15:18,709 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-02-04 03:15:18,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 03:15:18,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-04 03:15:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 03:15:18,710 INFO L225 Difference]: With dead ends: 29 [2018-02-04 03:15:18,710 INFO L226 Difference]: Without dead ends: 29 [2018-02-04 03:15:18,711 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 03:15:18,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-02-04 03:15:18,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2018-02-04 03:15:18,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 03:15:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-02-04 03:15:18,714 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20 [2018-02-04 03:15:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 03:15:18,715 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-02-04 03:15:18,715 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 03:15:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-02-04 03:15:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 03:15:18,715 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 03:15:18,716 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 03:15:18,716 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 03:15:18,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005913, now seen corresponding path program 1 times [2018-02-04 03:15:18,717 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 03:15:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 03:15:18,727 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 03:15:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,759 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 03:15:18,760 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 03:15:18,760 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 03:15:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,760 INFO L182 omatonBuilderFactory]: Interpolants [229#true, 230#false, 231#(= 0 |ldv_malloc_#res.base|), 232#(= 0 |entry_point_#t~ret3.base|), 233#(= 0 entry_point_~q~0.base)] [2018-02-04 03:15:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,760 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 03:15:18,761 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 03:15:18,761 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 03:15:18,761 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2018-02-04 03:15:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 03:15:18,774 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-02-04 03:15:18,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 03:15:18,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-04 03:15:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 03:15:18,775 INFO L225 Difference]: With dead ends: 30 [2018-02-04 03:15:18,776 INFO L226 Difference]: Without dead ends: 30 [2018-02-04 03:15:18,776 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 03:15:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-04 03:15:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2018-02-04 03:15:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 03:15:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-02-04 03:15:18,779 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2018-02-04 03:15:18,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 03:15:18,779 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-02-04 03:15:18,779 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 03:15:18,779 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-02-04 03:15:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 03:15:18,780 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 03:15:18,780 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 03:15:18,780 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 03:15:18,780 INFO L82 PathProgramCache]: Analyzing trace with hash 245416420, now seen corresponding path program 1 times [2018-02-04 03:15:18,781 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 03:15:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 03:15:18,791 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 03:15:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,846 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 03:15:18,846 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-02-04 03:15:18,846 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 03:15:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,846 INFO L182 omatonBuilderFactory]: Interpolants [292#true, 293#false, 294#(and (= 0 |ldv_malloc_#res.offset|) (= 0 |ldv_malloc_#res.base|)), 295#(and (= 0 |entry_point_#t~ret2.offset|) (= 0 |entry_point_#t~ret2.base|)), 296#(and (= 0 entry_point_~p~0.base) (= 0 entry_point_~p~0.offset))] [2018-02-04 03:15:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 03:15:18,847 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 03:15:18,847 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 03:15:18,847 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 03:15:18,847 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2018-02-04 03:15:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 03:15:18,858 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-02-04 03:15:18,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 03:15:18,859 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-02-04 03:15:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 03:15:18,859 INFO L225 Difference]: With dead ends: 30 [2018-02-04 03:15:18,859 INFO L226 Difference]: Without dead ends: 28 [2018-02-04 03:15:18,860 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 03:15:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-02-04 03:15:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-02-04 03:15:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-04 03:15:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-02-04 03:15:18,863 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2018-02-04 03:15:18,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 03:15:18,863 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-02-04 03:15:18,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 03:15:18,863 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-02-04 03:15:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 03:15:18,864 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 03:15:18,864 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 03:15:18,864 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 03:15:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1092908838, now seen corresponding path program 1 times [2018-02-04 03:15:18,865 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 03:15:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 03:15:18,878 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 03:15:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 03:15:18,917 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 03:15:18,917 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 03:15:18,917 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 03:15:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 03:15:18,918 INFO L182 omatonBuilderFactory]: Interpolants [355#true, 356#false, 357#(= 0 |ldv_malloc_#t~malloc1.offset|), 358#(= 0 |ldv_malloc_#res.offset|), 359#(= 0 |entry_point_#t~ret3.offset|), 360#(= 0 entry_point_~q~0.offset)] [2018-02-04 03:15:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 03:15:18,918 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 03:15:18,918 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 03:15:18,918 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 03:15:18,918 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 6 states. [2018-02-04 03:15:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 03:15:18,938 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-02-04 03:15:18,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 03:15:18,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-04 03:15:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 03:15:18,939 INFO L225 Difference]: With dead ends: 27 [2018-02-04 03:15:18,939 INFO L226 Difference]: Without dead ends: 27 [2018-02-04 03:15:18,939 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-04 03:15:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-02-04 03:15:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-02-04 03:15:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 03:15:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-04 03:15:18,942 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24 [2018-02-04 03:15:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 03:15:18,942 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-04 03:15:18,942 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 03:15:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-04 03:15:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 03:15:18,943 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 03:15:18,943 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 03:15:18,943 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 03:15:18,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1092908839, now seen corresponding path program 1 times [2018-02-04 03:15:18,944 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 03:15:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 03:15:18,953 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 03:15:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 03:15:18,988 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 03:15:18,988 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 03:15:18,988 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 03:15:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 03:15:18,988 INFO L182 omatonBuilderFactory]: Interpolants [417#true, 418#false, 419#(= 1 (select |#valid| |ldv_malloc_#t~malloc1.base|)), 420#(= 1 (select |#valid| |ldv_malloc_#res.base|)), 421#(= 1 (select |#valid| |entry_point_#t~ret3.base|)), 422#(= 1 (select |#valid| entry_point_~q~0.base))] [2018-02-04 03:15:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-02-04 03:15:18,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 03:15:18,989 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 03:15:18,989 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 03:15:18,989 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2018-02-04 03:15:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 03:15:19,025 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-02-04 03:15:19,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 03:15:19,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-04 03:15:19,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 03:15:19,026 INFO L225 Difference]: With dead ends: 26 [2018-02-04 03:15:19,026 INFO L226 Difference]: Without dead ends: 26 [2018-02-04 03:15:19,027 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-04 03:15:19,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-04 03:15:19,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-02-04 03:15:19,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-04 03:15:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-04 03:15:19,029 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 24 [2018-02-04 03:15:19,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 03:15:19,029 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-04 03:15:19,030 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 03:15:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-04 03:15:19,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 03:15:19,030 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 03:15:19,031 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 03:15:19,031 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 03:15:19,031 INFO L82 PathProgramCache]: Analyzing trace with hash -191782558, now seen corresponding path program 1 times [2018-02-04 03:15:19,032 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 03:15:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 03:15:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 03:15:19,068 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 03:15:19,076 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-04 03:15:19,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 03:15:19 BoogieIcfgContainer [2018-02-04 03:15:19,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 03:15:19,085 INFO L168 Benchmark]: Toolchain (without parser) took 1250.92 ms. Allocated memory was 402.7 MB in the beginning and 613.9 MB in the end (delta: 211.3 MB). Free memory was 359.5 MB in the beginning and 504.7 MB in the end (delta: -145.2 MB). Peak memory consumption was 66.1 MB. Max. memory is 5.3 GB. [2018-02-04 03:15:19,086 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 402.7 MB. Free memory is still 366.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 03:15:19,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.08 ms. Allocated memory is still 402.7 MB. Free memory was 359.5 MB in the beginning and 346.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 03:15:19,086 INFO L168 Benchmark]: Boogie Preprocessor took 21.69 ms. Allocated memory is still 402.7 MB. Free memory was 346.3 MB in the beginning and 345.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 03:15:19,086 INFO L168 Benchmark]: RCFGBuilder took 145.84 ms. Allocated memory is still 402.7 MB. Free memory was 345.0 MB in the beginning and 331.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-04 03:15:19,086 INFO L168 Benchmark]: TraceAbstraction took 921.18 ms. Allocated memory was 402.7 MB in the beginning and 613.9 MB in the end (delta: 211.3 MB). Free memory was 331.0 MB in the beginning and 504.7 MB in the end (delta: -173.7 MB). Peak memory consumption was 37.5 MB. Max. memory is 5.3 GB. [2018-02-04 03:15:19,087 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 402.7 MB. Free memory is still 366.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 159.08 ms. Allocated memory is still 402.7 MB. Free memory was 359.5 MB in the beginning and 346.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 21.69 ms. Allocated memory is still 402.7 MB. Free memory was 346.3 MB in the beginning and 345.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 145.84 ms. Allocated memory is still 402.7 MB. Free memory was 345.0 MB in the beginning and 331.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 921.18 ms. Allocated memory was 402.7 MB in the beginning and 613.9 MB in the end (delta: 211.3 MB). Free memory was 331.0 MB in the beginning and 504.7 MB in the end (delta: -173.7 MB). Peak memory consumption was 37.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1444] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={6:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); [L1436] COND TRUE \read(*p) VAL [p={6:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); [L1438] FCALL free(q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 3 error locations. UNSAFE Result, 0.8s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 169 SDtfs, 26 SDslu, 471 SDs, 0 SdLazy, 106 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 22/24 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 4818 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 22/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_03-15-19-092.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_03-15-19-092.csv Received shutdown request...