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_test10_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:15:10,623 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:15:10,624 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:15:10,633 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:15:10,634 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:15:10,634 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:15:10,635 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:15:10,636 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:15:10,638 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:15:10,639 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:15:10,640 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:15:10,640 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:15:10,641 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:15:10,642 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:15:10,642 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:15:10,644 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:15:10,646 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:15:10,647 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:15:10,648 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:15:10,649 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:15:10,651 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:15:10,656 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:15:10,656 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:15:10,656 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 04:15:10,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:15:10,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:15:10,668 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:15:10,668 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:15:10,668 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:15:10,669 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:15:10,669 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:15:10,669 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:15:10,669 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:15:10,669 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:15:10,669 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:15:10,670 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:15:10,670 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:15:10,670 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:15:10,670 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:15:10,670 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:15:10,670 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:15:10,671 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:15:10,671 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:15:10,671 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:15:10,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:15:10,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:15:10,671 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 04:15:10,671 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 04:15:10,672 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-04 04:15:10,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:15:10,714 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:15:10,717 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:15:10,719 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:15:10,719 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:15:10,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test10_false-valid-memtrack_true-termination.i [2018-02-04 04:15:10,876 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:15:10,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:15:10,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:15:10,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:15:10,882 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:15:10,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:15:10" (1/1) ... [2018-02-04 04:15:10,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b089594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:10, skipping insertion in model container [2018-02-04 04:15:10,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:15:10" (1/1) ... [2018-02-04 04:15:10,900 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:15:10,953 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:15:11,042 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:15:11,059 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:15:11,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11 WrapperNode [2018-02-04 04:15:11,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:15:11,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:15:11,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:15:11,067 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:15:11,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (1/1) ... [2018-02-04 04:15:11,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (1/1) ... [2018-02-04 04:15:11,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (1/1) ... [2018-02-04 04:15:11,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (1/1) ... [2018-02-04 04:15:11,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (1/1) ... [2018-02-04 04:15:11,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (1/1) ... [2018-02-04 04:15:11,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (1/1) ... [2018-02-04 04:15:11,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:15:11,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:15:11,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:15:11,096 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:15:11,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (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 04:15:11,133 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:15:11,133 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:15:11,133 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:15:11,133 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_10 [2018-02-04 04:15:11,133 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:15:11,134 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:15:11,134 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_10 [2018-02-04 04:15:11,135 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:15:11,135 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:15:11,135 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:15:11,135 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:15:11,340 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:15:11,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:15:11 BoogieIcfgContainer [2018-02-04 04:15:11,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:15:11,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:15:11,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:15:11,344 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:15:11,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:15:10" (1/3) ... [2018-02-04 04:15:11,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16aef1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:15:11, skipping insertion in model container [2018-02-04 04:15:11,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:15:11" (2/3) ... [2018-02-04 04:15:11,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16aef1bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:15:11, skipping insertion in model container [2018-02-04 04:15:11,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:15:11" (3/3) ... [2018-02-04 04:15:11,347 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test10_false-valid-memtrack_true-termination.i [2018-02-04 04:15:11,352 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:15:11,356 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2018-02-04 04:15:11,385 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:15:11,385 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:15:11,385 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 04:15:11,385 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 04:15:11,385 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:15:11,385 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:15:11,386 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:15:11,386 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:15:11,386 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:15:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2018-02-04 04:15:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-04 04:15:11,407 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:15:11,408 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:15:11,408 INFO L371 AbstractCegarLoop]: === Iteration 1 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-02-04 04:15:11,412 INFO L82 PathProgramCache]: Analyzing trace with hash 178224559, now seen corresponding path program 1 times [2018-02-04 04:15:11,414 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:15:11,414 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:15:11,462 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:11,462 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:11,463 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:11,501 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:15:11,582 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 04:15:11,585 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:15:11,585 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 04:15:11,586 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:15:11,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:15:11,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:15:11,596 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 3 states. [2018-02-04 04:15:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:15:11,813 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2018-02-04 04:15:11,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:15:11,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-02-04 04:15:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:15:11,824 INFO L225 Difference]: With dead ends: 137 [2018-02-04 04:15:11,824 INFO L226 Difference]: Without dead ends: 131 [2018-02-04 04:15:11,825 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 04:15:11,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-02-04 04:15:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 82. [2018-02-04 04:15:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-02-04 04:15:11,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2018-02-04 04:15:11,860 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 16 [2018-02-04 04:15:11,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:15:11,861 INFO L432 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2018-02-04 04:15:11,861 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:15:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2018-02-04 04:15:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:15:11,863 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:15:11,863 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:15:11,863 INFO L371 AbstractCegarLoop]: === Iteration 2 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-02-04 04:15:11,863 INFO L82 PathProgramCache]: Analyzing trace with hash 892424113, now seen corresponding path program 1 times [2018-02-04 04:15:11,863 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:15:11,863 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:15:11,865 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:11,865 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:11,865 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:11,881 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:15:11,928 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 04:15:11,928 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:15:11,928 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:15:11,929 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:15:11,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:15:11,930 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:15:11,930 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 6 states. [2018-02-04 04:15:12,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:15:12,027 INFO L93 Difference]: Finished difference Result 128 states and 144 transitions. [2018-02-04 04:15:12,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:15:12,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-02-04 04:15:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:15:12,031 INFO L225 Difference]: With dead ends: 128 [2018-02-04 04:15:12,031 INFO L226 Difference]: Without dead ends: 128 [2018-02-04 04:15:12,031 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 04:15:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-02-04 04:15:12,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2018-02-04 04:15:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-02-04 04:15:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2018-02-04 04:15:12,045 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 18 [2018-02-04 04:15:12,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:15:12,045 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2018-02-04 04:15:12,045 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:15:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2018-02-04 04:15:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-04 04:15:12,046 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:15:12,046 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:15:12,046 INFO L371 AbstractCegarLoop]: === Iteration 3 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-02-04 04:15:12,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2038882856, now seen corresponding path program 1 times [2018-02-04 04:15:12,048 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:15:12,049 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:15:12,050 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:12,050 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:12,050 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:12,061 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:15:12,109 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 04:15:12,109 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 04:15:12,110 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 04:15:12,111 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:12,141 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 04:15:12,164 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 04:15:12,164 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-04 04:15:12,164 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2018-02-04 04:15:12,165 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:15:12,165 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:15:12,165 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:15:12,165 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 5 states. [2018-02-04 04:15:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:15:12,198 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2018-02-04 04:15:12,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 04:15:12,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-02-04 04:15:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:15:12,199 INFO L225 Difference]: With dead ends: 82 [2018-02-04 04:15:12,200 INFO L226 Difference]: Without dead ends: 80 [2018-02-04 04:15:12,200 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 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 04:15:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-02-04 04:15:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-02-04 04:15:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-02-04 04:15:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2018-02-04 04:15:12,205 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 19 [2018-02-04 04:15:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:15:12,205 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2018-02-04 04:15:12,205 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:15:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2018-02-04 04:15:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:15:12,205 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:15:12,206 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:15:12,206 INFO L371 AbstractCegarLoop]: === Iteration 4 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-02-04 04:15:12,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1489811686, now seen corresponding path program 1 times [2018-02-04 04:15:12,206 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:15:12,206 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:15:12,207 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:12,207 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:12,207 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:12,223 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:15:12,275 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 04:15:12,276 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 04:15:12,276 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 04:15:12,277 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:12,298 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 04:15:12,319 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 04:15:12,320 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:15:12,321 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 04:15:12,321 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-04 04:15:12,328 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 04:15:12,329 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 04:15:12,329 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-02-04 04:15:12,329 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:15:12,330 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:15:12,330 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:15:12,330 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 7 states. [2018-02-04 04:15:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:15:12,529 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2018-02-04 04:15:12,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:15:12,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-02-04 04:15:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:15:12,531 INFO L225 Difference]: With dead ends: 98 [2018-02-04 04:15:12,531 INFO L226 Difference]: Without dead ends: 98 [2018-02-04 04:15:12,531 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 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 04:15:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-02-04 04:15:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2018-02-04 04:15:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-02-04 04:15:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2018-02-04 04:15:12,537 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 21 [2018-02-04 04:15:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:15:12,538 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2018-02-04 04:15:12,538 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:15:12,538 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2018-02-04 04:15:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:15:12,539 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:15:12,539 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:15:12,539 INFO L371 AbstractCegarLoop]: === Iteration 5 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-02-04 04:15:12,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1489811687, now seen corresponding path program 1 times [2018-02-04 04:15:12,539 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:15:12,539 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:15:12,541 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:12,541 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:12,541 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:12,558 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:15:12,751 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 04:15:12,751 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 04:15:12,752 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_FP [2018-02-04 04:15:12,753 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:12,775 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 04:15:12,792 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 04:15:12,793 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 04:15:12,804 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 04:15:12,805 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-04 04:15:12,814 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-04 04:15:12,815 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:36 [2018-02-04 04:15:12,886 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 04:15:12,886 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 04:15:12,887 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-02-04 04:15:12,887 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-04 04:15:12,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-04 04:15:12,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-02-04 04:15:12,887 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand 13 states. [2018-02-04 04:15:13,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:15:13,194 INFO L93 Difference]: Finished difference Result 126 states and 145 transitions. [2018-02-04 04:15:13,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:15:13,194 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2018-02-04 04:15:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:15:13,195 INFO L225 Difference]: With dead ends: 126 [2018-02-04 04:15:13,195 INFO L226 Difference]: Without dead ends: 126 [2018-02-04 04:15:13,195 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-02-04 04:15:13,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-02-04 04:15:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 110. [2018-02-04 04:15:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-02-04 04:15:13,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 143 transitions. [2018-02-04 04:15:13,204 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 143 transitions. Word has length 21 [2018-02-04 04:15:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:15:13,204 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 143 transitions. [2018-02-04 04:15:13,204 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-04 04:15:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 143 transitions. [2018-02-04 04:15:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 04:15:13,205 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:15:13,205 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:15:13,205 INFO L371 AbstractCegarLoop]: === Iteration 6 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-02-04 04:15:13,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1393839336, now seen corresponding path program 1 times [2018-02-04 04:15:13,206 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-04 04:15:13,206 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-04 04:15:13,207 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:13,207 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 04:15:13,207 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 04:15:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:15:13,218 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 04:15:13,224 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 04:15:13,227 INFO L168 Benchmark]: Toolchain (without parser) took 2350.86 ms. Allocated memory was 400.6 MB in the beginning and 623.4 MB in the end (delta: 222.8 MB). Free memory was 357.4 MB in the beginning and 496.9 MB in the end (delta: -139.5 MB). Peak memory consumption was 83.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:15:13,228 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 400.6 MB. Free memory is still 364.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:15:13,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.25 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 344.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:15:13,229 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 ms. Allocated memory is still 400.6 MB. Free memory was 344.2 MB in the beginning and 342.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:15:13,229 INFO L168 Benchmark]: RCFGBuilder took 244.66 ms. Allocated memory is still 400.6 MB. Free memory was 342.8 MB in the beginning and 318.2 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 5.3 GB. [2018-02-04 04:15:13,229 INFO L168 Benchmark]: TraceAbstraction took 1885.66 ms. Allocated memory was 400.6 MB in the beginning and 623.4 MB in the end (delta: 222.8 MB). Free memory was 318.2 MB in the beginning and 496.9 MB in the end (delta: -178.7 MB). Peak memory consumption was 44.1 MB. Max. memory is 5.3 GB. [2018-02-04 04:15:13,230 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 400.6 MB. Free memory is still 364.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 189.25 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 344.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.61 ms. Allocated memory is still 400.6 MB. Free memory was 344.2 MB in the beginning and 342.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 244.66 ms. Allocated memory is still 400.6 MB. Free memory was 342.8 MB in the beginning and 318.2 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1885.66 ms. Allocated memory was 400.6 MB in the beginning and 623.4 MB in the end (delta: 222.8 MB). Free memory was 318.2 MB in the beginning and 496.9 MB in the end (delta: -178.7 MB). Peak memory consumption was 44.1 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_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-15-13-237.csv Received shutdown request...