java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/list-ext-properties/test-0232_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 20:19:17,075 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 20:19:17,077 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 20:19:17,088 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 20:19:17,088 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 20:19:17,089 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 20:19:17,090 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 20:19:17,091 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 20:19:17,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 20:19:17,094 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 20:19:17,094 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 20:19:17,095 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 20:19:17,095 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 20:19:17,096 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 20:19:17,097 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 20:19:17,099 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 20:19:17,100 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 20:19:17,102 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 20:19:17,103 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 20:19:17,104 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 20:19:17,106 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 20:19:17,109 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 20:19:17,110 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 20:19:17,110 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-02-02 20:19:17,119 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 20:19:17,120 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 20:19:17,121 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 20:19:17,121 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 20:19:17,121 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 20:19:17,121 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 20:19:17,121 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 20:19:17,121 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 20:19:17,121 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 20:19:17,122 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 20:19:17,122 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 20:19:17,122 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 20:19:17,122 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 20:19:17,122 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 20:19:17,122 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 20:19:17,123 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 20:19:17,123 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 20:19:17,123 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 20:19:17,123 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 20:19:17,123 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 20:19:17,123 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 20:19:17,124 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 20:19:17,124 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-02 20:19:17,151 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 20:19:17,161 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 20:19:17,164 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 20:19:17,166 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 20:19:17,166 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 20:19:17,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0232_1_false-valid-memtrack_true-termination.i [2018-02-02 20:19:17,314 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 20:19:17,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 20:19:17,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 20:19:17,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 20:19:17,322 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 20:19:17,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59897e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17, skipping insertion in model container [2018-02-02 20:19:17,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,341 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 20:19:17,377 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 20:19:17,467 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 20:19:17,486 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 20:19:17,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17 WrapperNode [2018-02-02 20:19:17,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 20:19:17,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 20:19:17,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 20:19:17,494 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 20:19:17,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (1/1) ... [2018-02-02 20:19:17,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 20:19:17,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 20:19:17,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 20:19:17,523 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 20:19:17,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 20:19:17,563 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 20:19:17,563 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 20:19:17,563 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-02-02 20:19:17,563 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 20:19:17,564 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 20:19:17,564 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 20:19:17,564 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 20:19:17,564 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 20:19:17,564 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 20:19:17,564 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 20:19:17,564 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 20:19:17,565 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 20:19:17,565 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-02-02 20:19:17,565 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 20:19:17,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 20:19:17,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 20:19:17,864 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 20:19:17,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:19:17 BoogieIcfgContainer [2018-02-02 20:19:17,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 20:19:17,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 20:19:17,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 20:19:17,869 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 20:19:17,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 08:19:17" (1/3) ... [2018-02-02 20:19:17,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98f3c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:19:17, skipping insertion in model container [2018-02-02 20:19:17,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 08:19:17" (2/3) ... [2018-02-02 20:19:17,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98f3c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 08:19:17, skipping insertion in model container [2018-02-02 20:19:17,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 08:19:17" (3/3) ... [2018-02-02 20:19:17,872 INFO L107 eAbstractionObserver]: Analyzing ICFG test-0232_1_false-valid-memtrack_true-termination.i [2018-02-02 20:19:17,878 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 20:19:17,883 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 43 error locations. [2018-02-02 20:19:17,908 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 20:19:17,908 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 20:19:17,909 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-02 20:19:17,909 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 20:19:17,909 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 20:19:17,909 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 20:19:17,909 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 20:19:17,909 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 20:19:17,910 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 20:19:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2018-02-02 20:19:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-02 20:19:17,926 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:17,927 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:17,927 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:17,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1218068532, now seen corresponding path program 1 times [2018-02-02 20:19:17,963 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:17,993 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,036 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:18,036 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 20:19:18,036 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,037 INFO L182 omatonBuilderFactory]: Interpolants [108#true, 109#false, 110#(= 1 (select |#valid| |main_~#list~0.base|))] [2018-02-02 20:19:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,038 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 20:19:18,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 20:19:18,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:19:18,047 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 3 states. [2018-02-02 20:19:18,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:18,267 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2018-02-02 20:19:18,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 20:19:18,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-02-02 20:19:18,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:18,278 INFO L225 Difference]: With dead ends: 110 [2018-02-02 20:19:18,278 INFO L226 Difference]: Without dead ends: 107 [2018-02-02 20:19:18,279 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:19:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-02-02 20:19:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2018-02-02 20:19:18,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-02-02 20:19:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2018-02-02 20:19:18,309 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 7 [2018-02-02 20:19:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:18,310 INFO L432 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2018-02-02 20:19:18,310 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 20:19:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2018-02-02 20:19:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-02 20:19:18,310 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:18,310 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:18,310 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:18,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1218068531, now seen corresponding path program 1 times [2018-02-02 20:19:18,311 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:18,322 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,356 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:18,356 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 20:19:18,356 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,357 INFO L182 omatonBuilderFactory]: Interpolants [323#true, 324#false, 325#(and (= (select |#length| |main_~#list~0.base|) 4) (= |main_~#list~0.offset| 0))] [2018-02-02 20:19:18,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,358 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 20:19:18,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 20:19:18,359 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:19:18,359 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand 3 states. [2018-02-02 20:19:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:18,432 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2018-02-02 20:19:18,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 20:19:18,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-02-02 20:19:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:18,434 INFO L225 Difference]: With dead ends: 103 [2018-02-02 20:19:18,434 INFO L226 Difference]: Without dead ends: 103 [2018-02-02 20:19:18,435 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:19:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-02-02 20:19:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2018-02-02 20:19:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-02-02 20:19:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2018-02-02 20:19:18,442 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 7 [2018-02-02 20:19:18,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:18,442 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2018-02-02 20:19:18,442 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 20:19:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2018-02-02 20:19:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 20:19:18,443 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:18,443 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:18,443 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:18,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2000515713, now seen corresponding path program 1 times [2018-02-02 20:19:18,444 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:18,460 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,512 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:18,512 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 20:19:18,512 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,512 INFO L182 omatonBuilderFactory]: Interpolants [530#true, 531#false, 532#(= 1 (select |#valid| |main_~#list~0.base|)), 533#(= 1 (select |#valid| |append_#in~plist.base|)), 534#(= 1 (select |#valid| append_~plist.base))] [2018-02-02 20:19:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,513 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 20:19:18,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 20:19:18,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 20:19:18,513 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand 5 states. [2018-02-02 20:19:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:18,654 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2018-02-02 20:19:18,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 20:19:18,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 20:19:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:18,658 INFO L225 Difference]: With dead ends: 99 [2018-02-02 20:19:18,658 INFO L226 Difference]: Without dead ends: 99 [2018-02-02 20:19:18,658 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 20:19:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-02-02 20:19:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-02-02 20:19:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-02-02 20:19:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 100 transitions. [2018-02-02 20:19:18,664 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 100 transitions. Word has length 14 [2018-02-02 20:19:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:18,664 INFO L432 AbstractCegarLoop]: Abstraction has 95 states and 100 transitions. [2018-02-02 20:19:18,664 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 20:19:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 100 transitions. [2018-02-02 20:19:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 20:19:18,664 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:18,665 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:18,665 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:18,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2000515714, now seen corresponding path program 1 times [2018-02-02 20:19:18,666 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:18,677 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,782 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:18,782 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 20:19:18,782 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,782 INFO L182 omatonBuilderFactory]: Interpolants [736#(and (= append_~plist.offset 0) (<= 4 (select |#length| append_~plist.base)) (= (select |#valid| append_~plist.base) 1)), 737#(and (= append_~plist.offset 0) (<= 4 (select |#length| append_~plist.base))), 731#true, 732#false, 733#(and (= 0 |main_~#list~0.offset|) (= (select |#length| |main_~#list~0.base|) 4)), 734#(and (= 0 |main_~#list~0.offset|) (= (select |#length| |main_~#list~0.base|) 4) (= (select |#valid| |main_~#list~0.base|) 1)), 735#(and (= (select |#valid| |append_#in~plist.base|) 1) (<= 4 (select |#length| |append_#in~plist.base|)) (= 0 |append_#in~plist.offset|))] [2018-02-02 20:19:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:18,782 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 20:19:18,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 20:19:18,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 20:19:18,783 INFO L87 Difference]: Start difference. First operand 95 states and 100 transitions. Second operand 7 states. [2018-02-02 20:19:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:18,987 INFO L93 Difference]: Finished difference Result 125 states and 131 transitions. [2018-02-02 20:19:18,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 20:19:18,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-02-02 20:19:18,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:18,989 INFO L225 Difference]: With dead ends: 125 [2018-02-02 20:19:18,989 INFO L226 Difference]: Without dead ends: 125 [2018-02-02 20:19:18,989 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-02-02 20:19:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-02-02 20:19:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 115. [2018-02-02 20:19:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-02-02 20:19:18,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 131 transitions. [2018-02-02 20:19:18,993 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 131 transitions. Word has length 14 [2018-02-02 20:19:18,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:18,993 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 131 transitions. [2018-02-02 20:19:18,993 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 20:19:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 131 transitions. [2018-02-02 20:19:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 20:19:18,993 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:18,993 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:18,993 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:18,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1886445036, now seen corresponding path program 1 times [2018-02-02 20:19:18,994 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:19,003 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,029 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:19,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 20:19:19,029 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:19,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,029 INFO L182 omatonBuilderFactory]: Interpolants [980#true, 981#false, 982#(= 1 (select |#valid| |append_#t~malloc1.base|)), 983#(= 1 (select |#valid| append_~item~0.base))] [2018-02-02 20:19:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,030 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 20:19:19,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 20:19:19,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 20:19:19,030 INFO L87 Difference]: Start difference. First operand 115 states and 131 transitions. Second operand 4 states. [2018-02-02 20:19:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:19,083 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2018-02-02 20:19:19,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 20:19:19,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-02-02 20:19:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:19,084 INFO L225 Difference]: With dead ends: 111 [2018-02-02 20:19:19,084 INFO L226 Difference]: Without dead ends: 111 [2018-02-02 20:19:19,084 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 20:19:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-02-02 20:19:19,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-02-02 20:19:19,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-02-02 20:19:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2018-02-02 20:19:19,090 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 15 [2018-02-02 20:19:19,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:19,090 INFO L432 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2018-02-02 20:19:19,090 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 20:19:19,090 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2018-02-02 20:19:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 20:19:19,090 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:19,091 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:19,091 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:19,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1886445037, now seen corresponding path program 1 times [2018-02-02 20:19:19,091 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:19,101 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,136 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:19,136 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 20:19:19,136 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,137 INFO L182 omatonBuilderFactory]: Interpolants [1208#true, 1209#false, 1210#(and (= 8 (select |#length| |append_#t~malloc1.base|)) (= 0 |append_#t~malloc1.offset|)), 1211#(and (= (select |#length| append_~item~0.base) 8) (= append_~item~0.offset 0))] [2018-02-02 20:19:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,137 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 20:19:19,137 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 20:19:19,137 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 20:19:19,137 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 4 states. [2018-02-02 20:19:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:19,217 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2018-02-02 20:19:19,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 20:19:19,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-02-02 20:19:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:19,218 INFO L225 Difference]: With dead ends: 107 [2018-02-02 20:19:19,218 INFO L226 Difference]: Without dead ends: 107 [2018-02-02 20:19:19,219 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 20:19:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-02-02 20:19:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-02-02 20:19:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-02-02 20:19:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2018-02-02 20:19:19,222 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 15 [2018-02-02 20:19:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:19,222 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2018-02-02 20:19:19,222 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 20:19:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2018-02-02 20:19:19,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 20:19:19,222 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:19,223 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:19,223 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:19,223 INFO L82 PathProgramCache]: Analyzing trace with hash 198602156, now seen corresponding path program 1 times [2018-02-02 20:19:19,224 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:19,234 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,321 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:19,322 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 20:19:19,322 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,322 INFO L182 omatonBuilderFactory]: Interpolants [1428#true, 1429#false, 1430#(and (= 0 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) |main_~#list~0.offset|)) (= 0 (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|))), 1431#(and (= 0 (select (select |#memory_$Pointer$.base| |append_#in~plist.base|) |append_#in~plist.offset|)) (= 0 (select (select |#memory_$Pointer$.offset| |append_#in~plist.base|) |append_#in~plist.offset|))), 1432#(and (= 0 (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset)) (= 0 (select (select |#memory_$Pointer$.offset| append_~plist.base) append_~plist.offset))), 1433#(and (= 0 |append_#t~mem3.offset|) (= 0 |append_#t~mem3.base|)), 1434#(and (= 0 (select (select |#memory_$Pointer$.base| append_~item~0.base) append_~item~0.offset)) (= 0 (select (select |#memory_$Pointer$.offset| append_~item~0.base) append_~item~0.offset))), 1435#(and (= |append_#t~mem4.offset| (select (select |#memory_$Pointer$.offset| append_~item~0.base) append_~item~0.offset)) (= |append_#t~mem4.base| 0) (= 0 (select (select |#memory_$Pointer$.offset| append_~item~0.base) append_~item~0.offset)))] [2018-02-02 20:19:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,322 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 20:19:19,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 20:19:19,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-02 20:19:19,323 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 8 states. [2018-02-02 20:19:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:19,511 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2018-02-02 20:19:19,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 20:19:19,512 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-02-02 20:19:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:19,512 INFO L225 Difference]: With dead ends: 104 [2018-02-02 20:19:19,513 INFO L226 Difference]: Without dead ends: 104 [2018-02-02 20:19:19,513 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-02-02 20:19:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-02-02 20:19:19,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-02-02 20:19:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-02-02 20:19:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2018-02-02 20:19:19,515 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 20 [2018-02-02 20:19:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:19,516 INFO L432 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2018-02-02 20:19:19,516 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 20:19:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2018-02-02 20:19:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 20:19:19,516 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:19,516 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:19,516 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:19,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1229999684, now seen corresponding path program 1 times [2018-02-02 20:19:19,517 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:19,530 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:19,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 20:19:19,626 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,626 INFO L182 omatonBuilderFactory]: Interpolants [1656#true, 1657#false, 1658#(and (= 0 |main_~#list~0.offset|) (= (select |#length| |main_~#list~0.base|) 4)), 1659#(and (= append_~plist.base |append_#in~plist.base|) (or (= append_~plist.offset 0) (= |append_#in~plist.offset| append_~plist.offset))), 1660#(or (<= 4 (select |#length| |append_#in~plist.base|)) (not (= |append_#in~plist.offset| 0))), 1661#(and (< 0 (+ |main_~#list~0.offset| 1)) (<= (+ |main_~#list~0.offset| 4) (select |#length| |main_~#list~0.base|)))] [2018-02-02 20:19:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,627 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 20:19:19,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 20:19:19,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-02 20:19:19,628 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand 6 states. [2018-02-02 20:19:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:19,733 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2018-02-02 20:19:19,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 20:19:19,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-02-02 20:19:19,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:19,734 INFO L225 Difference]: With dead ends: 120 [2018-02-02 20:19:19,734 INFO L226 Difference]: Without dead ends: 120 [2018-02-02 20:19:19,734 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-02-02 20:19:19,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-02-02 20:19:19,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 110. [2018-02-02 20:19:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-02-02 20:19:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2018-02-02 20:19:19,737 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 31 [2018-02-02 20:19:19,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:19,738 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2018-02-02 20:19:19,738 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 20:19:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2018-02-02 20:19:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-02 20:19:19,739 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:19,739 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:19,739 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:19,739 INFO L82 PathProgramCache]: Analyzing trace with hash -524715473, now seen corresponding path program 1 times [2018-02-02 20:19:19,740 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:19,751 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,806 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:19,806 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 20:19:19,806 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,806 INFO L182 omatonBuilderFactory]: Interpolants [1894#true, 1895#false, 1896#(and (= append_~plist.base |append_#in~plist.base|) (= append_~plist.offset |append_#in~plist.offset|)), 1897#(and (= append_~plist.base |append_#in~plist.base|) (= 1 (select |#valid| append_~item~0.base)) (= append_~plist.offset |append_#in~plist.offset|)), 1898#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| |append_#in~plist.base|) |append_#in~plist.offset|))), 1899#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|))), 1900#(= 1 (select |#valid| |main_#t~mem15.base|))] [2018-02-02 20:19:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:19,807 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 20:19:19,807 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 20:19:19,807 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-02-02 20:19:19,807 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 7 states. [2018-02-02 20:19:19,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:19,946 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2018-02-02 20:19:19,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 20:19:19,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2018-02-02 20:19:19,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:19,948 INFO L225 Difference]: With dead ends: 130 [2018-02-02 20:19:19,948 INFO L226 Difference]: Without dead ends: 130 [2018-02-02 20:19:19,948 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-02-02 20:19:19,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-02-02 20:19:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2018-02-02 20:19:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-02-02 20:19:19,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2018-02-02 20:19:19,959 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 32 [2018-02-02 20:19:19,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:19,960 INFO L432 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2018-02-02 20:19:19,960 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 20:19:19,960 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2018-02-02 20:19:19,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-02 20:19:19,960 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:19,961 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:19,961 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:19,961 INFO L82 PathProgramCache]: Analyzing trace with hash -524715472, now seen corresponding path program 1 times [2018-02-02 20:19:19,962 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:19,973 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:20,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,087 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:20,087 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 20:19:20,087 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,088 INFO L182 omatonBuilderFactory]: Interpolants [2148#true, 2149#false, 2150#(and (= append_~plist.base |append_#in~plist.base|) (= append_~plist.offset |append_#in~plist.offset|)), 2151#(and (= append_~plist.base |append_#in~plist.base|) (= 0 |append_#t~malloc1.offset|) (= append_~plist.offset |append_#in~plist.offset|)), 2152#(and (= append_~plist.base |append_#in~plist.base|) (= append_~item~0.offset 0) (= append_~plist.offset |append_#in~plist.offset|)), 2153#(and (= append_~plist.base |append_#in~plist.base|) (= append_~item~0.offset 0) (= append_~plist.offset |append_#in~plist.offset|) (<= (+ append_~item~0.offset 8) (select |#length| append_~item~0.base))), 2154#(and (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| |append_#in~plist.base|) |append_#in~plist.offset|))) (= 0 (select (select |#memory_$Pointer$.offset| |append_#in~plist.base|) |append_#in~plist.offset|))), 2155#(and (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|))) (= 0 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) |main_~#list~0.offset|))), 2156#(and (<= 8 (select |#length| |main_#t~mem15.base|)) (= |main_#t~mem15.offset| 0))] [2018-02-02 20:19:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,088 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 20:19:20,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 20:19:20,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-02-02 20:19:20,088 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand 9 states. [2018-02-02 20:19:20,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:20,247 INFO L93 Difference]: Finished difference Result 127 states and 136 transitions. [2018-02-02 20:19:20,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-02 20:19:20,248 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2018-02-02 20:19:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:20,248 INFO L225 Difference]: With dead ends: 127 [2018-02-02 20:19:20,248 INFO L226 Difference]: Without dead ends: 127 [2018-02-02 20:19:20,249 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-02-02 20:19:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-02-02 20:19:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2018-02-02 20:19:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-02-02 20:19:20,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2018-02-02 20:19:20,251 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 32 [2018-02-02 20:19:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:20,251 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2018-02-02 20:19:20,251 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 20:19:20,251 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2018-02-02 20:19:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-02 20:19:20,251 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:20,252 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:20,252 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash -524727421, now seen corresponding path program 1 times [2018-02-02 20:19:20,253 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:20,263 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,308 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:20,308 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 20:19:20,308 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,309 INFO L182 omatonBuilderFactory]: Interpolants [2408#true, 2409#false, 2410#(<= 1 main_~length~0)] [2018-02-02 20:19:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,309 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 20:19:20,309 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 20:19:20,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:19:20,309 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 3 states. [2018-02-02 20:19:20,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:20,329 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2018-02-02 20:19:20,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 20:19:20,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-02-02 20:19:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:20,330 INFO L225 Difference]: With dead ends: 96 [2018-02-02 20:19:20,330 INFO L226 Difference]: Without dead ends: 96 [2018-02-02 20:19:20,330 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:19:20,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-02-02 20:19:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-02-02 20:19:20,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-02-02 20:19:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2018-02-02 20:19:20,333 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 32 [2018-02-02 20:19:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:20,333 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2018-02-02 20:19:20,333 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 20:19:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2018-02-02 20:19:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-02-02 20:19:20,334 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:20,334 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:20,334 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:20,334 INFO L82 PathProgramCache]: Analyzing trace with hash 947709807, now seen corresponding path program 1 times [2018-02-02 20:19:20,335 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:20,344 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,357 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:20,357 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 20:19:20,357 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,358 INFO L182 omatonBuilderFactory]: Interpolants [2603#true, 2604#false, 2605#(<= main_~length~0 0)] [2018-02-02 20:19:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,358 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 20:19:20,358 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 20:19:20,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:19:20,358 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 3 states. [2018-02-02 20:19:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:20,376 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2018-02-02 20:19:20,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 20:19:20,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-02-02 20:19:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:20,377 INFO L225 Difference]: With dead ends: 96 [2018-02-02 20:19:20,377 INFO L226 Difference]: Without dead ends: 96 [2018-02-02 20:19:20,377 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 20:19:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-02-02 20:19:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2018-02-02 20:19:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-02-02 20:19:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2018-02-02 20:19:20,379 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 33 [2018-02-02 20:19:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:20,379 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2018-02-02 20:19:20,380 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 20:19:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2018-02-02 20:19:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-02 20:19:20,380 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:20,380 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, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:20,380 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:20,381 INFO L82 PathProgramCache]: Analyzing trace with hash -302598238, now seen corresponding path program 1 times [2018-02-02 20:19:20,381 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:20,394 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,514 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 20:19:20,514 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-02-02 20:19:20,514 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,514 INFO L182 omatonBuilderFactory]: Interpolants [2800#(and (or (<= 4 (select |#length| |append_#in~plist.base|)) (not (= |append_#in~plist.offset| 0))) (= (select |#valid| |append_#in~plist.base|) 1)), 2801#(and (<= 4 (select |#length| |main_~#list~0.base|)) (= 0 |main_~#list~0.offset|) (= (select |#valid| |main_~#list~0.base|) 1)), 2802#(and (= (select |#valid| |append_#in~plist.base|) 1) (<= 4 (select |#length| |append_#in~plist.base|)) (= 0 |append_#in~plist.offset|)), 2803#(and (= append_~plist.offset 0) (<= 4 (select |#length| append_~plist.base)) (= (select |#valid| append_~plist.base) 1)), 2804#(and (= append_~plist.offset 0) (<= 4 (select |#length| append_~plist.base))), 2796#true, 2797#false, 2798#(and (= 0 |main_~#list~0.offset|) (= (select |#length| |main_~#list~0.base|) 4)), 2799#(and (= append_~plist.base |append_#in~plist.base|) (or (= append_~plist.offset 0) (= |append_#in~plist.offset| append_~plist.offset)))] [2018-02-02 20:19:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,515 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 20:19:20,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 20:19:20,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-02 20:19:20,515 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand 9 states. [2018-02-02 20:19:20,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:20,679 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2018-02-02 20:19:20,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 20:19:20,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2018-02-02 20:19:20,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:20,680 INFO L225 Difference]: With dead ends: 93 [2018-02-02 20:19:20,680 INFO L226 Difference]: Without dead ends: 93 [2018-02-02 20:19:20,680 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-02-02 20:19:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-02-02 20:19:20,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2018-02-02 20:19:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-02-02 20:19:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2018-02-02 20:19:20,682 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 34 [2018-02-02 20:19:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:20,682 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2018-02-02 20:19:20,682 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 20:19:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2018-02-02 20:19:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-02-02 20:19:20,682 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:20,683 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:20,683 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:20,683 INFO L82 PathProgramCache]: Analyzing trace with hash 214855819, now seen corresponding path program 1 times [2018-02-02 20:19:20,683 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:20,689 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,702 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:20,702 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 20:19:20,702 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,703 INFO L182 omatonBuilderFactory]: Interpolants [2987#true, 2988#false, 2989#(= main_~length~0 0), 2990#(<= 1 main_~length~0)] [2018-02-02 20:19:20,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,703 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 20:19:20,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 20:19:20,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 20:19:20,703 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 4 states. [2018-02-02 20:19:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:20,716 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2018-02-02 20:19:20,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 20:19:20,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-02-02 20:19:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:20,716 INFO L225 Difference]: With dead ends: 84 [2018-02-02 20:19:20,717 INFO L226 Difference]: Without dead ends: 84 [2018-02-02 20:19:20,717 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 20:19:20,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-02-02 20:19:20,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2018-02-02 20:19:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-02-02 20:19:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2018-02-02 20:19:20,720 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 35 [2018-02-02 20:19:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:20,720 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2018-02-02 20:19:20,720 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 20:19:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2018-02-02 20:19:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-02-02 20:19:20,721 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:20,721 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:20,721 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:20,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1882322185, now seen corresponding path program 1 times [2018-02-02 20:19:20,721 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:20,728 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,788 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:20,789 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 20:19:20,789 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,789 INFO L182 omatonBuilderFactory]: Interpolants [3158#true, 3159#false, 3160#(and (= append_~plist.base |append_#in~plist.base|) (= append_~plist.offset |append_#in~plist.offset|)), 3161#(and (= append_~plist.base |append_#in~plist.base|) (= 0 |append_#t~malloc1.offset|) (= append_~plist.offset |append_#in~plist.offset|)), 3162#(and (= 0 append_~item~0.offset) (= append_~plist.base |append_#in~plist.base|) (= append_~plist.offset |append_#in~plist.offset|)), 3163#(= 0 (select (select |#memory_$Pointer$.offset| |append_#in~plist.base|) |append_#in~plist.offset|)), 3164#(= 0 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) |main_~#list~0.offset|)), 3165#(= |main_#t~mem17.offset| 0)] [2018-02-02 20:19:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,789 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 20:19:20,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 20:19:20,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-02-02 20:19:20,790 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 8 states. [2018-02-02 20:19:20,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:20,887 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2018-02-02 20:19:20,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 20:19:20,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2018-02-02 20:19:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:20,888 INFO L225 Difference]: With dead ends: 82 [2018-02-02 20:19:20,888 INFO L226 Difference]: Without dead ends: 82 [2018-02-02 20:19:20,888 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-02-02 20:19:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-02-02 20:19:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-02-02 20:19:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-02-02 20:19:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2018-02-02 20:19:20,891 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 35 [2018-02-02 20:19:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:20,891 INFO L432 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2018-02-02 20:19:20,891 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 20:19:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2018-02-02 20:19:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-02-02 20:19:20,892 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:20,892 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:20,892 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:20,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1882322186, now seen corresponding path program 1 times [2018-02-02 20:19:20,893 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:20,902 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,923 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:20,923 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 20:19:20,923 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,924 INFO L182 omatonBuilderFactory]: Interpolants [3344#(= 1 (select |#valid| |main_#t~mem17.base|)), 3340#true, 3341#false, 3342#(= |main_#t~mem15.base| (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|)), 3343#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|)))] [2018-02-02 20:19:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:20,924 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 20:19:20,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 20:19:20,924 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 20:19:20,925 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 5 states. [2018-02-02 20:19:20,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:20,992 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2018-02-02 20:19:20,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 20:19:20,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-02-02 20:19:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:20,993 INFO L225 Difference]: With dead ends: 81 [2018-02-02 20:19:20,993 INFO L226 Difference]: Without dead ends: 81 [2018-02-02 20:19:20,994 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-02 20:19:20,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-02-02 20:19:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-02-02 20:19:20,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-02-02 20:19:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2018-02-02 20:19:20,996 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 35 [2018-02-02 20:19:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:20,996 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2018-02-02 20:19:20,997 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 20:19:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2018-02-02 20:19:20,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-02-02 20:19:20,997 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:20,997 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:20,997 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:20,997 INFO L82 PathProgramCache]: Analyzing trace with hash 730389066, now seen corresponding path program 1 times [2018-02-02 20:19:20,998 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:21,007 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,103 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:21,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-02 20:19:21,104 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,104 INFO L182 omatonBuilderFactory]: Interpolants [3520#(and (not (= |main_#t~mem17.base| 0)) (= 1 (select (store |#valid| |main_#t~mem17.base| 0) |main_~#list~0.base|))), 3511#true, 3512#false, 3513#(= 1 (select |#valid| |main_~#list~0.base|)), 3514#(= |#valid| |old(#valid)|), 3515#(and (= append_~plist.base |append_#in~plist.base|) (= |#valid| |old(#valid)|) (= append_~plist.offset |append_#in~plist.offset|)), 3516#(and (= (select |old(#valid)| |append_#t~malloc1.base|) 0) (= append_~plist.base |append_#in~plist.base|) (not (= |append_#t~malloc1.base| 0)) (= append_~plist.offset |append_#in~plist.offset|)), 3517#(and (= append_~plist.base |append_#in~plist.base|) (= append_~plist.offset |append_#in~plist.offset|) (= (select |old(#valid)| append_~item~0.base) 0) (not (= append_~item~0.base 0))), 3518#(and (not (= (select (select |#memory_$Pointer$.base| |append_#in~plist.base|) |append_#in~plist.offset|) 0)) (= (select |old(#valid)| (select (select |#memory_$Pointer$.base| |append_#in~plist.base|) |append_#in~plist.offset|)) 0) (= 1 (select |#valid| |append_#in~plist.base|))), 3519#(and (not (= (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|) |main_~#list~0.base|)) (= 1 (select |#valid| |main_~#list~0.base|)))] [2018-02-02 20:19:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,104 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 20:19:21,104 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 20:19:21,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-02-02 20:19:21,105 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand 10 states. [2018-02-02 20:19:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:21,323 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-02-02 20:19:21,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 20:19:21,323 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-02-02 20:19:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:21,324 INFO L225 Difference]: With dead ends: 80 [2018-02-02 20:19:21,324 INFO L226 Difference]: Without dead ends: 80 [2018-02-02 20:19:21,324 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-02-02 20:19:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-02-02 20:19:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-02-02 20:19:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-02-02 20:19:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2018-02-02 20:19:21,327 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 37 [2018-02-02 20:19:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:21,327 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2018-02-02 20:19:21,327 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 20:19:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2018-02-02 20:19:21,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-02-02 20:19:21,328 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:21,328 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:21,328 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:21,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2123324108, now seen corresponding path program 1 times [2018-02-02 20:19:21,329 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:21,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,483 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 20:19:21,483 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-02-02 20:19:21,483 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,483 INFO L182 omatonBuilderFactory]: Interpolants [3696#(or (= 1 (select |#valid| |append_#t~mem3.base|)) (= append_~item~0.base |append_#t~mem3.base|)), 3697#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| append_~item~0.base) append_~item~0.offset))), 3698#(= 1 (select |#valid| |append_#t~mem5.base|)), 3687#true, 3688#false, 3689#(and (= append_~plist.base |append_#in~plist.base|) (= append_~plist.offset |append_#in~plist.offset|)), 3690#(and (= append_~plist.base |append_#in~plist.base|) (= 1 (select |#valid| append_~item~0.base)) (= append_~plist.offset |append_#in~plist.offset|)), 3691#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| |append_#in~plist.base|) |append_#in~plist.offset|))), 3692#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|))), 3693#(= 1 (select |#valid| (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset))), 3694#(or (= 1 (select |#valid| (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset))) (= |append_#t~malloc1.base| (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset))), 3695#(or (= append_~item~0.base (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset)) (= 1 (select |#valid| (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset))))] [2018-02-02 20:19:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,483 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 20:19:21,483 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 20:19:21,484 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-02-02 20:19:21,484 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 12 states. [2018-02-02 20:19:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:21,763 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2018-02-02 20:19:21,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 20:19:21,763 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2018-02-02 20:19:21,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:21,764 INFO L225 Difference]: With dead ends: 81 [2018-02-02 20:19:21,764 INFO L226 Difference]: Without dead ends: 81 [2018-02-02 20:19:21,764 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-02-02 20:19:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-02-02 20:19:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2018-02-02 20:19:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-02-02 20:19:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2018-02-02 20:19:21,766 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 40 [2018-02-02 20:19:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:21,766 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2018-02-02 20:19:21,766 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 20:19:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2018-02-02 20:19:21,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-02-02 20:19:21,766 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:21,766 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:21,766 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:21,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2123324109, now seen corresponding path program 1 times [2018-02-02 20:19:21,767 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:21,776 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,993 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-02 20:19:21,993 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-02-02 20:19:21,993 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,994 INFO L182 omatonBuilderFactory]: Interpolants [3875#true, 3876#false, 3877#(and (= append_~plist.base |append_#in~plist.base|) (= append_~plist.offset |append_#in~plist.offset|)), 3878#(and (= append_~plist.base |append_#in~plist.base|) (= 0 |append_#t~malloc1.offset|) (= append_~plist.offset |append_#in~plist.offset|)), 3879#(and (= append_~plist.base |append_#in~plist.base|) (= append_~item~0.offset 0) (= append_~plist.offset |append_#in~plist.offset|)), 3880#(and (= append_~plist.base |append_#in~plist.base|) (= append_~item~0.offset 0) (= (select |#valid| append_~item~0.base) 1) (= append_~plist.offset |append_#in~plist.offset|) (<= (+ append_~item~0.offset 8) (select |#length| append_~item~0.base))), 3881#(and (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| |append_#in~plist.base|) |append_#in~plist.offset|))) (= (select |#valid| (select (select |#memory_$Pointer$.base| |append_#in~plist.base|) |append_#in~plist.offset|)) 1) (= 0 (select (select |#memory_$Pointer$.offset| |append_#in~plist.base|) |append_#in~plist.offset|))), 3882#(and (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|))) (= 0 (select (select |#memory_$Pointer$.offset| |main_~#list~0.base|) |main_~#list~0.offset|)) (= (select |#valid| (select (select |#memory_$Pointer$.base| |main_~#list~0.base|) |main_~#list~0.offset|)) 1)), 3883#(and (= (select |#valid| (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset)) 1) (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset))) (= 0 (select (select |#memory_$Pointer$.offset| append_~plist.base) append_~plist.offset))), 3884#(and (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| append_~plist.base) append_~plist.offset))) (= 0 (select (select |#memory_$Pointer$.offset| append_~plist.base) append_~plist.offset))), 3885#(and (= 0 |append_#t~mem3.offset|) (<= 8 (select |#length| |append_#t~mem3.base|))), 3886#(and (= 0 (select (select |#memory_$Pointer$.offset| append_~item~0.base) append_~item~0.offset)) (<= 8 (select |#length| (select (select |#memory_$Pointer$.base| append_~item~0.base) append_~item~0.offset)))), 3887#(and (= |append_#t~mem5.offset| 0) (<= 8 (select |#length| |append_#t~mem5.base|)))] [2018-02-02 20:19:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:21,994 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-02 20:19:21,994 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-02 20:19:21,994 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-02-02 20:19:21,994 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 13 states. [2018-02-02 20:19:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:22,382 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2018-02-02 20:19:22,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-02-02 20:19:22,382 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-02-02 20:19:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:22,383 INFO L225 Difference]: With dead ends: 80 [2018-02-02 20:19:22,383 INFO L226 Difference]: Without dead ends: 80 [2018-02-02 20:19:22,383 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2018-02-02 20:19:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-02-02 20:19:22,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2018-02-02 20:19:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-02-02 20:19:22,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2018-02-02 20:19:22,385 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 40 [2018-02-02 20:19:22,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:22,385 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2018-02-02 20:19:22,385 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-02 20:19:22,385 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2018-02-02 20:19:22,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-02-02 20:19:22,385 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:22,386 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:22,386 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:22,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1242227968, now seen corresponding path program 1 times [2018-02-02 20:19:22,386 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 20:19:22,393 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 20:19:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:22,421 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 20:19:22,421 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 20:19:22,421 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 20:19:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:22,421 INFO L182 omatonBuilderFactory]: Interpolants [4072#true, 4073#false, 4074#(= main_~length~0 0), 4075#(<= main_~length~0 1), 4076#(<= main_~length~0 0)] [2018-02-02 20:19:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 20:19:22,422 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 20:19:22,422 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 20:19:22,422 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 20:19:22,422 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 5 states. [2018-02-02 20:19:22,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 20:19:22,434 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2018-02-02 20:19:22,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 20:19:22,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2018-02-02 20:19:22,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 20:19:22,435 INFO L225 Difference]: With dead ends: 96 [2018-02-02 20:19:22,435 INFO L226 Difference]: Without dead ends: 96 [2018-02-02 20:19:22,435 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-02-02 20:19:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-02-02 20:19:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2018-02-02 20:19:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-02-02 20:19:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2018-02-02 20:19:22,437 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 42 [2018-02-02 20:19:22,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 20:19:22,437 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2018-02-02 20:19:22,437 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 20:19:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2018-02-02 20:19:22,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-02-02 20:19:22,437 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 20:19:22,437 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 20:19:22,438 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, appendErr0RequiresViolation, appendErr9RequiresViolation, appendErr13RequiresViolation, appendErr4RequiresViolation, appendErr8RequiresViolation, appendErr10RequiresViolation, appendErr5RequiresViolation, appendErr12RequiresViolation, appendErr11RequiresViolation, appendErr7RequiresViolation, appendErr3RequiresViolation, appendErr2RequiresViolation, appendErr1RequiresViolation, appendErr6RequiresViolation]=== [2018-02-02 20:19:22,438 INFO L82 PathProgramCache]: Analyzing trace with hash -221032996, now seen corresponding path program 1 times [2018-02-02 20:19:22,438 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 20:19:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 20:19:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 20:19:22,485 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 20:19:22,499 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 20:19:22,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 08:19:22 BoogieIcfgContainer [2018-02-02 20:19:22,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 20:19:22,516 INFO L168 Benchmark]: Toolchain (without parser) took 5202.19 ms. Allocated memory was 397.9 MB in the beginning and 712.5 MB in the end (delta: 314.6 MB). Free memory was 354.6 MB in the beginning and 609.7 MB in the end (delta: -255.1 MB). Peak memory consumption was 59.5 MB. Max. memory is 5.3 GB. [2018-02-02 20:19:22,517 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 397.9 MB. Free memory is still 361.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 20:19:22,517 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.67 ms. Allocated memory is still 397.9 MB. Free memory was 354.6 MB in the beginning and 344.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 20:19:22,518 INFO L168 Benchmark]: Boogie Preprocessor took 29.13 ms. Allocated memory is still 397.9 MB. Free memory was 344.1 MB in the beginning and 342.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 20:19:22,518 INFO L168 Benchmark]: RCFGBuilder took 342.06 ms. Allocated memory is still 397.9 MB. Free memory was 342.7 MB in the beginning and 312.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 5.3 GB. [2018-02-02 20:19:22,518 INFO L168 Benchmark]: TraceAbstraction took 4649.97 ms. Allocated memory was 397.9 MB in the beginning and 712.5 MB in the end (delta: 314.6 MB). Free memory was 312.3 MB in the beginning and 609.7 MB in the end (delta: -297.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 5.3 GB. [2018-02-02 20:19:22,519 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 397.9 MB. Free memory is still 361.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 177.67 ms. Allocated memory is still 397.9 MB. Free memory was 354.6 MB in the beginning and 344.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.13 ms. Allocated memory is still 397.9 MB. Free memory was 344.1 MB in the beginning and 342.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 342.06 ms. Allocated memory is still 397.9 MB. Free memory was 342.7 MB in the beginning and 312.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4649.97 ms. Allocated memory was 397.9 MB in the beginning and 712.5 MB in the end (delta: 314.6 MB). Free memory was 312.3 MB in the beginning and 609.7 MB in the end (delta: -297.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 635]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 635. Possible FailurePath: [L620] int c = 0; VAL [\old(c)=0, c=0] [L637] FCALL struct item *list = ((void *)0); VAL [\old(c)=0, c=0, list={9:0}] [L638] int length = 0; VAL [\old(c)=0, c=0, length=0, list={9:0}] [L640] CALL append(&list) VAL [\old(c)=0, c=0, plist={9:0}] [L627] c++ VAL [\old(c)=0, c=1, plist={9:0}, plist={9:0}] [L628] EXPR, FCALL malloc(sizeof *item) VAL [\old(c)=0, c=1, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L628] struct item *item = malloc(sizeof *item); VAL [\old(c)=0, c=1, item={14:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L629] EXPR, FCALL \read(**plist) VAL [\old(c)=0, \read(**plist)={0:0}, c=1, item={14:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L629] FCALL item->next = *plist VAL [\old(c)=0, \read(**plist)={0:0}, c=1, item={14:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L630] EXPR, FCALL item->next VAL [\old(c)=0, c=1, item={14:0}, item->next={0:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L630-L632] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) VAL [\old(c)=0, c=1, item={14:0}, item->next={0:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L632] EXPR, FCALL malloc(sizeof *item) VAL [\old(c)=0, c=1, item={14:0}, item->next={0:0}, malloc(sizeof *item)={11:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L630-L632] EXPR (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={11:0}, \old(c)=0, c=1, item={14:0}, item->next={0:0}, malloc(sizeof *item)={11:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L630-L632] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={11:0}, \old(c)=0, c=1, item={14:0}, item->next={0:0}, malloc(sizeof *item)={11:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L633] RET, FCALL *plist = item VAL [\old(c)=0, c=1, item={14:0}, malloc(sizeof *item)={11:0}, malloc(sizeof *item)={14:0}, plist={9:0}, plist={9:0}] [L640] append(&list) VAL [\old(c)=0, c=1, length=0, list={9:0}] [L641] length++ VAL [\old(c)=0, c=1, length=1, list={9:0}] [L642] COND FALSE !(__VERIFIER_nondet_int() && c < 20) [L643] COND TRUE length > 0 VAL [\old(c)=0, c=1, length=1, list={9:0}] [L644] COND FALSE !(length < 0) VAL [\old(c)=0, c=1, length=1, list={9:0}] [L647] EXPR, FCALL \read(*list) VAL [\old(c)=0, \read(*list)={14:0}, c=1, length=1, list={9:0}] [L647] EXPR, FCALL list->next VAL [\old(c)=0, \read(*list)={14:0}, c=1, length=1, list={9:0}, list->next={0:0}] [L647] struct item *next = list->next; [L648] EXPR, FCALL \read(*list) VAL [\old(c)=0, \read(*list)={14:0}, c=1, length=1, list={9:0}, next={0:0}] [L648] FCALL free(list) VAL [\old(c)=0, \read(*list)={14:0}, c=1, length=1, list={9:0}, next={0:0}] [L649] FCALL list = next VAL [\old(c)=0, c=1, length=1, list={9:0}, next={0:0}] [L650] length-- VAL [\old(c)=0, c=1, length=0, list={9:0}, next={0:0}] [L652] COND FALSE !(length > 0) VAL [\old(c)=0, c=1, length=0, list={9:0}, next={0:0}] [L658] return 0; VAL [\old(c)=0, \result=0, c=1, length=0, list={9:0}, next={0:0}] [L637] FCALL struct item *list = ((void *)0); VAL [\old(c)=0, \result=0, c=1, length=0, list={9:0}, next={0:0}] [L658] return 0; VAL [\old(c)=0, \result=0, c=1, length=0, next={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 105 locations, 43 error locations. UNSAFE Result, 4.6s OverallTime, 21 OverallIterations, 2 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1330 SDtfs, 925 SDslu, 3027 SDs, 0 SdLazy, 2449 SolverSat, 128 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 7/26 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 20 MinimizatonAttempts, 85 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 594 NumberOfCodeBlocks, 594 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 530 ConstructedInterpolants, 0 QuantifiedInterpolants, 102656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 17 PerfectInterpolantSequences, 7/26 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_20-19-22-525.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_20-19-22-525.csv Received shutdown request...