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_NoArray.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_3_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:16:18,737 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:16:18,739 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:16:18,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:16:18,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:16:18,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:16:18,756 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:16:18,758 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:16:18,760 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:16:18,761 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:16:18,761 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:16:18,762 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:16:18,762 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:16:18,763 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:16:18,764 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:16:18,766 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:16:18,767 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:16:18,769 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:16:18,770 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:16:18,771 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:16:18,773 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 04:16:18,773 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 04:16:18,773 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 04:16:18,774 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 04:16:18,775 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 04:16:18,776 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 04:16:18,776 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 04:16:18,776 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 04:16:18,776 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 04:16:18,776 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:16:18,777 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:16:18,777 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_NoArray.epf [2018-02-04 04:16:18,786 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:16:18,786 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:16:18,787 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:16:18,787 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:16:18,787 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:16:18,787 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:16:18,787 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:16:18,787 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:16:18,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:16:18,788 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:16:18,789 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:16:18,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:16:18,789 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:16:18,789 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 04:16:18,789 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 04:16:18,789 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 04:16:18,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:16:18,825 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:16:18,828 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:16:18,829 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:16:18,829 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:16:18,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_3_false-valid-memtrack_true-termination.i [2018-02-04 04:16:18,974 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:16:18,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:16:18,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:16:18,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:16:18,981 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:16:18,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:16:18" (1/1) ... [2018-02-04 04:16:18,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0e9dc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:18, skipping insertion in model container [2018-02-04 04:16:18,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:16:18" (1/1) ... [2018-02-04 04:16:18,999 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:16:19,035 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:16:19,124 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:16:19,137 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:16:19,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19 WrapperNode [2018-02-04 04:16:19,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:16:19,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:16:19,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:16:19,142 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:16:19,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (1/1) ... [2018-02-04 04:16:19,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (1/1) ... [2018-02-04 04:16:19,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (1/1) ... [2018-02-04 04:16:19,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (1/1) ... [2018-02-04 04:16:19,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (1/1) ... [2018-02-04 04:16:19,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (1/1) ... [2018-02-04 04:16:19,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (1/1) ... [2018-02-04 04:16:19,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:16:19,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:16:19,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:16:19,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:16:19,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (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 04:16:19,205 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:16:19,206 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:16:19,206 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:16:19,206 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:16:19,206 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:16:19,206 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 04:16:19,206 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 04:16:19,206 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:16:19,206 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:16:19,206 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:16:19,206 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:16:19,207 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:16:19,207 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:16:19,207 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:16:19,207 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:16:19,207 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:16:19,207 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:16:19,327 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:16:19,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:16:19 BoogieIcfgContainer [2018-02-04 04:16:19,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:16:19,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:16:19,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:16:19,331 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:16:19,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:16:18" (1/3) ... [2018-02-04 04:16:19,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ba64e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:16:19, skipping insertion in model container [2018-02-04 04:16:19,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:16:19" (2/3) ... [2018-02-04 04:16:19,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257ba64e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:16:19, skipping insertion in model container [2018-02-04 04:16:19,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:16:19" (3/3) ... [2018-02-04 04:16:19,334 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test18_3_false-valid-memtrack_true-termination.i [2018-02-04 04:16:19,341 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:16:19,347 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-04 04:16:19,379 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:16:19,380 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:16:19,380 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 04:16:19,380 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 04:16:19,380 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:16:19,380 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:16:19,380 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:16:19,380 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:16:19,382 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:16:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-02-04 04:16:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-04 04:16:19,401 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:19,402 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:19,403 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:19,406 INFO L82 PathProgramCache]: Analyzing trace with hash -144006031, now seen corresponding path program 1 times [2018-02-04 04:16:19,407 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:19,407 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:19,441 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:19,441 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:19,441 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:19,484 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:19,543 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 04:16:19,545 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:16:19,546 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 04:16:19,547 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:16:19,555 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:16:19,555 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:16:19,557 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2018-02-04 04:16:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:19,707 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-02-04 04:16:19,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:16:19,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-02-04 04:16:19,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:19,714 INFO L225 Difference]: With dead ends: 46 [2018-02-04 04:16:19,714 INFO L226 Difference]: Without dead ends: 40 [2018-02-04 04:16:19,715 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 04:16:19,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-04 04:16:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-02-04 04:16:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-04 04:16:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-02-04 04:16:19,742 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 17 [2018-02-04 04:16:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:19,742 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-02-04 04:16:19,742 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:16:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-02-04 04:16:19,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-04 04:16:19,743 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:19,743 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:19,743 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:19,744 INFO L82 PathProgramCache]: Analyzing trace with hash -716261389, now seen corresponding path program 1 times [2018-02-04 04:16:19,744 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:19,744 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:19,745 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:19,745 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:19,745 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:19,761 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:19,804 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 04:16:19,805 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:16:19,805 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:16:19,806 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:16:19,806 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:16:19,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:16:19,807 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 6 states. [2018-02-04 04:16:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:19,852 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2018-02-04 04:16:19,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:16:19,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-02-04 04:16:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:19,854 INFO L225 Difference]: With dead ends: 48 [2018-02-04 04:16:19,854 INFO L226 Difference]: Without dead ends: 48 [2018-02-04 04:16:19,855 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 04:16:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-02-04 04:16:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2018-02-04 04:16:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-04 04:16:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-02-04 04:16:19,860 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 19 [2018-02-04 04:16:19,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:19,861 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-02-04 04:16:19,861 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:16:19,861 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-02-04 04:16:19,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:16:19,862 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:19,862 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] [2018-02-04 04:16:19,862 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:19,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1119113233, now seen corresponding path program 1 times [2018-02-04 04:16:19,862 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:19,862 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:19,864 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:19,864 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:19,864 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:19,877 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:19,922 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 04:16:19,922 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:16:19,922 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:16:19,923 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 04:16:19,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 04:16:19,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:16:19,923 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 4 states. [2018-02-04 04:16:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:19,955 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2018-02-04 04:16:19,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:16:19,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-02-04 04:16:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:19,956 INFO L225 Difference]: With dead ends: 52 [2018-02-04 04:16:19,957 INFO L226 Difference]: Without dead ends: 52 [2018-02-04 04:16:19,957 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-02-04 04:16:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-02-04 04:16:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-02-04 04:16:19,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-04 04:16:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-02-04 04:16:19,962 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 21 [2018-02-04 04:16:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:19,962 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-02-04 04:16:19,962 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 04:16:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-02-04 04:16:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 04:16:19,962 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:19,962 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:19,963 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:19,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1380395530, now seen corresponding path program 1 times [2018-02-04 04:16:19,963 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:19,963 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:19,964 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:19,964 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:19,964 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:19,972 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:20,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:16:20,011 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 04:16:20,011 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 04:16:20,012 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:20,039 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 04:16:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:16:20,080 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 04:16:20,080 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2018-02-04 04:16:20,081 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:16:20,081 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:16:20,081 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:16:20,081 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 5 states. [2018-02-04 04:16:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:20,092 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-02-04 04:16:20,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 04:16:20,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-02-04 04:16:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:20,093 INFO L225 Difference]: With dead ends: 34 [2018-02-04 04:16:20,093 INFO L226 Difference]: Without dead ends: 32 [2018-02-04 04:16:20,094 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 3 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 04:16:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-04 04:16:20,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-02-04 04:16:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-04 04:16:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-02-04 04:16:20,097 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 23 [2018-02-04 04:16:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:20,097 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-02-04 04:16:20,097 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:16:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-02-04 04:16:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:16:20,098 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:20,098 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:20,098 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:20,098 INFO L82 PathProgramCache]: Analyzing trace with hash 679154700, now seen corresponding path program 1 times [2018-02-04 04:16:20,099 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:20,099 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:20,100 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:20,100 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:20,100 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:20,110 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:16:20,154 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 04:16:20,154 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 04:16:20,155 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:20,173 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 04:16:20,190 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 04:16:20,192 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:16:20,194 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:16:20,194 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 04:16:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:16:20,203 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 04:16:20,203 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-02-04 04:16:20,204 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:16:20,204 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:16:20,204 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:16:20,204 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2018-02-04 04:16:20,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:20,282 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-02-04 04:16:20,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:16:20,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-02-04 04:16:20,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:20,283 INFO L225 Difference]: With dead ends: 35 [2018-02-04 04:16:20,283 INFO L226 Difference]: Without dead ends: 35 [2018-02-04 04:16:20,283 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:16:20,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-04 04:16:20,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-02-04 04:16:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-04 04:16:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-02-04 04:16:20,285 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2018-02-04 04:16:20,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:20,285 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-02-04 04:16:20,285 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:16:20,286 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-02-04 04:16:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-04 04:16:20,286 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:20,286 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:20,286 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:20,286 INFO L82 PathProgramCache]: Analyzing trace with hash 679154701, now seen corresponding path program 1 times [2018-02-04 04:16:20,286 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:20,286 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:20,287 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:20,287 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:20,287 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:20,296 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:16:20,491 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 04:16:20,491 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 04:16:20,492 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:20,512 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 04:16:20,544 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 20 treesize of output 19 [2018-02-04 04:16:20,545 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:16:20,561 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 17 treesize of output 16 [2018-02-04 04:16:20,561 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-04 04:16:20,575 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-04 04:16:20,575 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:36 [2018-02-04 04:16:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 04:16:20,726 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 04:16:20,727 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2018-02-04 04:16:20,727 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-04 04:16:20,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-04 04:16:20,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-02-04 04:16:20,728 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 15 states. [2018-02-04 04:16:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:16:21,036 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-02-04 04:16:21,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 04:16:21,036 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2018-02-04 04:16:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:16:21,037 INFO L225 Difference]: With dead ends: 38 [2018-02-04 04:16:21,037 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 04:16:21,037 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2018-02-04 04:16:21,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 04:16:21,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-02-04 04:16:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-04 04:16:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2018-02-04 04:16:21,041 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 25 [2018-02-04 04:16:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:16:21,042 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2018-02-04 04:16:21,042 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-04 04:16:21,042 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2018-02-04 04:16:21,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-04 04:16:21,043 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:16:21,043 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:16:21,043 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-02-04 04:16:21,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1335043850, now seen corresponding path program 1 times [2018-02-04 04:16:21,043 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:16:21,043 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:16:21,044 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:21,045 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:16:21,045 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:16:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:16:21,059 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:16:21,064 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Unknown lemma type! at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) 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.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) 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.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:222) 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 04:16:21,068 INFO L168 Benchmark]: Toolchain (without parser) took 2092.88 ms. Allocated memory was 405.8 MB in the beginning and 633.9 MB in the end (delta: 228.1 MB). Free memory was 359.8 MB in the beginning and 550.6 MB in the end (delta: -190.7 MB). Peak memory consumption was 37.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:21,069 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 405.8 MB. Free memory is still 366.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:16:21,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.83 ms. Allocated memory is still 405.8 MB. Free memory was 359.8 MB in the beginning and 346.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:21,069 INFO L168 Benchmark]: Boogie Preprocessor took 28.90 ms. Allocated memory is still 405.8 MB. Free memory was 346.6 MB in the beginning and 345.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:21,069 INFO L168 Benchmark]: RCFGBuilder took 156.49 ms. Allocated memory is still 405.8 MB. Free memory was 345.3 MB in the beginning and 329.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:21,070 INFO L168 Benchmark]: TraceAbstraction took 1738.79 ms. Allocated memory was 405.8 MB in the beginning and 633.9 MB in the end (delta: 228.1 MB). Free memory was 329.4 MB in the beginning and 550.6 MB in the end (delta: -221.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 5.3 GB. [2018-02-04 04:16:21,071 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 405.8 MB. Free memory is still 366.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 165.83 ms. Allocated memory is still 405.8 MB. Free memory was 359.8 MB in the beginning and 346.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.90 ms. Allocated memory is still 405.8 MB. Free memory was 346.6 MB in the beginning and 345.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 156.49 ms. Allocated memory is still 405.8 MB. Free memory was 345.3 MB in the beginning and 329.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1738.79 ms. Allocated memory was 405.8 MB in the beginning and 633.9 MB in the end (delta: 228.1 MB). Free memory was 329.4 MB in the beginning and 550.6 MB in the end (delta: -221.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Unknown lemma type! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Unknown lemma type!: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) 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_test18_3_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-16-21-077.csv Received shutdown request...