java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/memsafety/test-0102_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 21:02:53,757 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 21:02:53,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 21:02:53,769 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 21:02:53,769 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 21:02:53,770 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 21:02:53,771 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 21:02:53,772 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 21:02:53,774 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 21:02:53,775 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 21:02:53,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 21:02:53,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 21:02:53,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 21:02:53,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 21:02:53,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 21:02:53,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 21:02:53,782 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 21:02:53,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 21:02:53,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 21:02:53,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 21:02:53,787 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 21:02:53,787 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 21:02:53,788 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 21:02:53,789 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 21:02:53,789 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 21:02:53,790 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 21:02:53,790 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 21:02:53,791 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 21:02:53,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 21:02:53,791 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 21:02:53,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 21:02:53,792 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-02 21:02:53,801 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 21:02:53,801 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 21:02:53,802 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 21:02:53,802 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 21:02:53,803 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 21:02:53,803 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 21:02:53,803 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 21:02:53,803 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 21:02:53,803 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 21:02:53,803 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 21:02:53,803 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 21:02:53,804 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 21:02:53,804 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 21:02:53,804 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 21:02:53,804 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 21:02:53,804 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 21:02:53,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 21:02:53,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 21:02:53,805 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 21:02:53,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 21:02:53,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 21:02:53,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 21:02:53,805 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 21:02:53,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 21:02:53,805 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-02 21:02:53,833 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 21:02:53,845 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 21:02:53,848 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 21:02:53,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 21:02:53,849 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 21:02:53,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0102_true-valid-memsafety.i [2018-02-02 21:02:53,963 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 21:02:53,964 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 21:02:53,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 21:02:53,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 21:02:53,970 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 21:02:53,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:02:53" (1/1) ... [2018-02-02 21:02:53,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557f9b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:53, skipping insertion in model container [2018-02-02 21:02:53,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:02:53" (1/1) ... [2018-02-02 21:02:53,983 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:02:54,022 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:02:54,131 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:02:54,150 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:02:54,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54 WrapperNode [2018-02-02 21:02:54,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 21:02:54,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 21:02:54,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 21:02:54,160 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 21:02:54,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (1/1) ... [2018-02-02 21:02:54,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (1/1) ... [2018-02-02 21:02:54,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (1/1) ... [2018-02-02 21:02:54,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (1/1) ... [2018-02-02 21:02:54,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (1/1) ... [2018-02-02 21:02:54,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (1/1) ... [2018-02-02 21:02:54,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (1/1) ... [2018-02-02 21:02:54,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 21:02:54,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 21:02:54,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 21:02:54,193 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 21:02:54,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (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 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure __list_add [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure list_add_tail [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure destroy_sub [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure destroy_top [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure insert_sub [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure create_sub_list [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure insert_top [2018-02-02 21:02:54,230 INFO L136 BoogieDeclarations]: Found implementation of procedure create_top [2018-02-02 21:02:54,231 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure __list_add [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure list_add_tail [2018-02-02 21:02:54,231 INFO L128 BoogieDeclarations]: Found specification of procedure destroy_sub [2018-02-02 21:02:54,232 INFO L128 BoogieDeclarations]: Found specification of procedure destroy_top [2018-02-02 21:02:54,232 INFO L128 BoogieDeclarations]: Found specification of procedure insert_sub [2018-02-02 21:02:54,232 INFO L128 BoogieDeclarations]: Found specification of procedure create_sub_list [2018-02-02 21:02:54,232 INFO L128 BoogieDeclarations]: Found specification of procedure insert_top [2018-02-02 21:02:54,232 INFO L128 BoogieDeclarations]: Found specification of procedure create_top [2018-02-02 21:02:54,232 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 21:02:54,232 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 21:02:54,232 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 21:02:54,502 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 21:02:54,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:02:54 BoogieIcfgContainer [2018-02-02 21:02:54,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 21:02:54,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 21:02:54,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 21:02:54,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 21:02:54,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:02:53" (1/3) ... [2018-02-02 21:02:54,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdb806f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:02:54, skipping insertion in model container [2018-02-02 21:02:54,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:02:54" (2/3) ... [2018-02-02 21:02:54,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdb806f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:02:54, skipping insertion in model container [2018-02-02 21:02:54,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:02:54" (3/3) ... [2018-02-02 21:02:54,507 INFO L107 eAbstractionObserver]: Analyzing ICFG test-0102_true-valid-memsafety.i [2018-02-02 21:02:54,513 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 21:02:54,517 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 33 error locations. [2018-02-02 21:02:54,541 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 21:02:54,541 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 21:02:54,541 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 21:02:54,541 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 21:02:54,541 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 21:02:54,541 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 21:02:54,542 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 21:02:54,542 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 21:02:54,542 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 21:02:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states. [2018-02-02 21:02:54,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-02 21:02:54,560 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:02:54,560 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:02:54,560 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, insert_subErr0RequiresViolation, insert_subErr1RequiresViolation, destroy_subErr2RequiresViolation, destroy_subErr3RequiresViolation, destroy_subErr4RequiresViolation, destroy_subErr5RequiresViolation, destroy_subErr1RequiresViolation, destroy_subErr0RequiresViolation, create_sub_listErr1RequiresViolation, create_sub_listErr2RequiresViolation, create_sub_listErr0RequiresViolation, create_sub_listErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, list_add_tailErr0RequiresViolation, list_add_tailErr1RequiresViolation, destroy_topErr1RequiresViolation, destroy_topErr3RequiresViolation, destroy_topErr2RequiresViolation, destroy_topErr0RequiresViolation, destroy_topErr4RequiresViolation, destroy_topErr5RequiresViolation]=== [2018-02-02 21:02:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2078311652, now seen corresponding path program 1 times [2018-02-02 21:02:54,564 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:02:54,565 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:02:54,595 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:54,595 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:02:54,595 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:54,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:02:54,627 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:02:54,669 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 21:02:54,671 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:02:54,671 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 21:02:54,673 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 21:02:54,681 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 21:02:54,681 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 21:02:54,683 INFO L87 Difference]: Start difference. First operand 120 states. Second operand 3 states. [2018-02-02 21:02:54,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:02:54,873 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2018-02-02 21:02:54,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 21:02:54,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-02-02 21:02:54,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:02:54,883 INFO L225 Difference]: With dead ends: 118 [2018-02-02 21:02:54,883 INFO L226 Difference]: Without dead ends: 115 [2018-02-02 21:02:54,885 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 21:02:54,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-02-02 21:02:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-02-02 21:02:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-02-02 21:02:54,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2018-02-02 21:02:54,922 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 7 [2018-02-02 21:02:54,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:02:54,922 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2018-02-02 21:02:54,922 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 21:02:54,922 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2018-02-02 21:02:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-02-02 21:02:54,923 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:02:54,923 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:02:54,923 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, insert_subErr0RequiresViolation, insert_subErr1RequiresViolation, destroy_subErr2RequiresViolation, destroy_subErr3RequiresViolation, destroy_subErr4RequiresViolation, destroy_subErr5RequiresViolation, destroy_subErr1RequiresViolation, destroy_subErr0RequiresViolation, create_sub_listErr1RequiresViolation, create_sub_listErr2RequiresViolation, create_sub_listErr0RequiresViolation, create_sub_listErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, list_add_tailErr0RequiresViolation, list_add_tailErr1RequiresViolation, destroy_topErr1RequiresViolation, destroy_topErr3RequiresViolation, destroy_topErr2RequiresViolation, destroy_topErr0RequiresViolation, destroy_topErr4RequiresViolation, destroy_topErr5RequiresViolation]=== [2018-02-02 21:02:54,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2078311651, now seen corresponding path program 1 times [2018-02-02 21:02:54,923 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:02:54,923 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:02:54,924 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:54,924 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:02:54,924 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:02:54,936 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:02:54,973 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 21:02:54,973 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:02:54,973 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 21:02:54,974 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 21:02:54,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 21:02:54,975 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 21:02:54,975 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand 3 states. [2018-02-02 21:02:55,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:02:55,037 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2018-02-02 21:02:55,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 21:02:55,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-02-02 21:02:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:02:55,038 INFO L225 Difference]: With dead ends: 113 [2018-02-02 21:02:55,038 INFO L226 Difference]: Without dead ends: 113 [2018-02-02 21:02:55,039 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 21:02:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-02-02 21:02:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-02-02 21:02:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-02-02 21:02:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2018-02-02 21:02:55,044 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 7 [2018-02-02 21:02:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:02:55,044 INFO L432 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2018-02-02 21:02:55,044 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 21:02:55,044 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2018-02-02 21:02:55,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-02 21:02:55,045 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:02:55,045 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:02:55,045 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, insert_subErr0RequiresViolation, insert_subErr1RequiresViolation, destroy_subErr2RequiresViolation, destroy_subErr3RequiresViolation, destroy_subErr4RequiresViolation, destroy_subErr5RequiresViolation, destroy_subErr1RequiresViolation, destroy_subErr0RequiresViolation, create_sub_listErr1RequiresViolation, create_sub_listErr2RequiresViolation, create_sub_listErr0RequiresViolation, create_sub_listErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, list_add_tailErr0RequiresViolation, list_add_tailErr1RequiresViolation, destroy_topErr1RequiresViolation, destroy_topErr3RequiresViolation, destroy_topErr2RequiresViolation, destroy_topErr0RequiresViolation, destroy_topErr4RequiresViolation, destroy_topErr5RequiresViolation]=== [2018-02-02 21:02:55,045 INFO L82 PathProgramCache]: Analyzing trace with hash -491558478, now seen corresponding path program 1 times [2018-02-02 21:02:55,045 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:02:55,045 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:02:55,046 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,046 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:02:55,046 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:02:55,066 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:02:55,115 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 21:02:55,116 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:02:55,116 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:02:55,116 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:02:55,116 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:02:55,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:02:55,117 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 6 states. [2018-02-02 21:02:55,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:02:55,263 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2018-02-02 21:02:55,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 21:02:55,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-02-02 21:02:55,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:02:55,268 INFO L225 Difference]: With dead ends: 121 [2018-02-02 21:02:55,269 INFO L226 Difference]: Without dead ends: 121 [2018-02-02 21:02:55,269 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-02 21:02:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-02-02 21:02:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2018-02-02 21:02:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-02-02 21:02:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2018-02-02 21:02:55,277 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 19 [2018-02-02 21:02:55,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:02:55,278 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2018-02-02 21:02:55,278 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:02:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2018-02-02 21:02:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-02 21:02:55,278 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:02:55,278 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:02:55,279 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, insert_subErr0RequiresViolation, insert_subErr1RequiresViolation, destroy_subErr2RequiresViolation, destroy_subErr3RequiresViolation, destroy_subErr4RequiresViolation, destroy_subErr5RequiresViolation, destroy_subErr1RequiresViolation, destroy_subErr0RequiresViolation, create_sub_listErr1RequiresViolation, create_sub_listErr2RequiresViolation, create_sub_listErr0RequiresViolation, create_sub_listErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, list_add_tailErr0RequiresViolation, list_add_tailErr1RequiresViolation, destroy_topErr1RequiresViolation, destroy_topErr3RequiresViolation, destroy_topErr2RequiresViolation, destroy_topErr0RequiresViolation, destroy_topErr4RequiresViolation, destroy_topErr5RequiresViolation]=== [2018-02-02 21:02:55,279 INFO L82 PathProgramCache]: Analyzing trace with hash -491558477, now seen corresponding path program 1 times [2018-02-02 21:02:55,279 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:02:55,279 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:02:55,280 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,280 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:02:55,280 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:02:55,298 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:02:55,387 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 21:02:55,388 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:02:55,388 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:02:55,388 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:02:55,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:02:55,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:02:55,389 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand 6 states. [2018-02-02 21:02:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:02:55,519 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2018-02-02 21:02:55,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 21:02:55,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-02-02 21:02:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:02:55,521 INFO L225 Difference]: With dead ends: 117 [2018-02-02 21:02:55,521 INFO L226 Difference]: Without dead ends: 117 [2018-02-02 21:02:55,521 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-02 21:02:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-02-02 21:02:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2018-02-02 21:02:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-02-02 21:02:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2018-02-02 21:02:55,527 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 19 [2018-02-02 21:02:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:02:55,528 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2018-02-02 21:02:55,528 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:02:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2018-02-02 21:02:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 21:02:55,529 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:02:55,529 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] [2018-02-02 21:02:55,529 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, insert_subErr0RequiresViolation, insert_subErr1RequiresViolation, destroy_subErr2RequiresViolation, destroy_subErr3RequiresViolation, destroy_subErr4RequiresViolation, destroy_subErr5RequiresViolation, destroy_subErr1RequiresViolation, destroy_subErr0RequiresViolation, create_sub_listErr1RequiresViolation, create_sub_listErr2RequiresViolation, create_sub_listErr0RequiresViolation, create_sub_listErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, list_add_tailErr0RequiresViolation, list_add_tailErr1RequiresViolation, destroy_topErr1RequiresViolation, destroy_topErr3RequiresViolation, destroy_topErr2RequiresViolation, destroy_topErr0RequiresViolation, destroy_topErr4RequiresViolation, destroy_topErr5RequiresViolation]=== [2018-02-02 21:02:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1908309148, now seen corresponding path program 1 times [2018-02-02 21:02:55,529 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:02:55,529 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:02:55,530 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,530 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:02:55,530 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:02:55,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:02:55,586 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 21:02:55,586 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:02:55,586 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:02:55,587 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:02:55,587 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:02:55,587 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:02:55,587 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand 4 states. [2018-02-02 21:02:55,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:02:55,638 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2018-02-02 21:02:55,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 21:02:55,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-02-02 21:02:55,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:02:55,639 INFO L225 Difference]: With dead ends: 114 [2018-02-02 21:02:55,640 INFO L226 Difference]: Without dead ends: 114 [2018-02-02 21:02:55,640 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 21:02:55,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-02-02 21:02:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-02-02 21:02:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-02-02 21:02:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2018-02-02 21:02:55,646 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 27 [2018-02-02 21:02:55,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:02:55,646 INFO L432 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2018-02-02 21:02:55,646 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:02:55,646 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2018-02-02 21:02:55,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 21:02:55,647 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:02:55,647 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] [2018-02-02 21:02:55,647 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, insert_subErr0RequiresViolation, insert_subErr1RequiresViolation, destroy_subErr2RequiresViolation, destroy_subErr3RequiresViolation, destroy_subErr4RequiresViolation, destroy_subErr5RequiresViolation, destroy_subErr1RequiresViolation, destroy_subErr0RequiresViolation, create_sub_listErr1RequiresViolation, create_sub_listErr2RequiresViolation, create_sub_listErr0RequiresViolation, create_sub_listErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, list_add_tailErr0RequiresViolation, list_add_tailErr1RequiresViolation, destroy_topErr1RequiresViolation, destroy_topErr3RequiresViolation, destroy_topErr2RequiresViolation, destroy_topErr0RequiresViolation, destroy_topErr4RequiresViolation, destroy_topErr5RequiresViolation]=== [2018-02-02 21:02:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1908309147, now seen corresponding path program 1 times [2018-02-02 21:02:55,648 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:02:55,648 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:02:55,648 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,648 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:02:55,649 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:02:55,663 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:02:55,721 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 21:02:55,721 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:02:55,722 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:02:55,722 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:02:55,722 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:02:55,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:02:55,722 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand 4 states. [2018-02-02 21:02:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:02:55,771 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2018-02-02 21:02:55,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 21:02:55,771 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-02-02 21:02:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:02:55,772 INFO L225 Difference]: With dead ends: 113 [2018-02-02 21:02:55,772 INFO L226 Difference]: Without dead ends: 113 [2018-02-02 21:02:55,772 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 21:02:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-02-02 21:02:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-02-02 21:02:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-02-02 21:02:55,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2018-02-02 21:02:55,778 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 27 [2018-02-02 21:02:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:02:55,778 INFO L432 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2018-02-02 21:02:55,778 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:02:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2018-02-02 21:02:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-02-02 21:02:55,779 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:02:55,779 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] [2018-02-02 21:02:55,779 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__list_addErr1RequiresViolation, __list_addErr3RequiresViolation, __list_addErr0RequiresViolation, __list_addErr2RequiresViolation, __list_addErr4RequiresViolation, __list_addErr7RequiresViolation, __list_addErr5RequiresViolation, __list_addErr6RequiresViolation, insert_subErr0RequiresViolation, insert_subErr1RequiresViolation, destroy_subErr2RequiresViolation, destroy_subErr3RequiresViolation, destroy_subErr4RequiresViolation, destroy_subErr5RequiresViolation, destroy_subErr1RequiresViolation, destroy_subErr0RequiresViolation, create_sub_listErr1RequiresViolation, create_sub_listErr2RequiresViolation, create_sub_listErr0RequiresViolation, create_sub_listErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, list_add_tailErr0RequiresViolation, list_add_tailErr1RequiresViolation, destroy_topErr1RequiresViolation, destroy_topErr3RequiresViolation, destroy_topErr2RequiresViolation, destroy_topErr0RequiresViolation, destroy_topErr4RequiresViolation, destroy_topErr5RequiresViolation]=== [2018-02-02 21:02:55,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2044398882, now seen corresponding path program 1 times [2018-02-02 21:02:55,780 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:02:55,780 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:02:55,781 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,781 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:02:55,781 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:02:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:02:55,814 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:02:55,820 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Unknown lemma type! at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-02 21:02:55,824 INFO L168 Benchmark]: Toolchain (without parser) took 1860.28 ms. Allocated memory was 403.7 MB in the beginning and 629.1 MB in the end (delta: 225.4 MB). Free memory was 357.5 MB in the beginning and 597.8 MB in the end (delta: -240.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:02:55,825 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 403.7 MB. Free memory is still 362.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:02:55,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.34 ms. Allocated memory is still 403.7 MB. Free memory was 357.5 MB in the beginning and 344.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-02 21:02:55,826 INFO L168 Benchmark]: Boogie Preprocessor took 33.13 ms. Allocated memory is still 403.7 MB. Free memory is still 344.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:02:55,826 INFO L168 Benchmark]: RCFGBuilder took 309.41 ms. Allocated memory is still 403.7 MB. Free memory was 344.3 MB in the beginning and 311.2 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 5.3 GB. [2018-02-02 21:02:55,826 INFO L168 Benchmark]: TraceAbstraction took 1320.67 ms. Allocated memory was 403.7 MB in the beginning and 629.1 MB in the end (delta: 225.4 MB). Free memory was 311.2 MB in the beginning and 597.8 MB in the end (delta: -286.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:02:55,828 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 403.7 MB. Free memory is still 362.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 194.34 ms. Allocated memory is still 403.7 MB. Free memory was 357.5 MB in the beginning and 344.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.13 ms. Allocated memory is still 403.7 MB. Free memory is still 344.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 309.41 ms. Allocated memory is still 403.7 MB. Free memory was 344.3 MB in the beginning and 311.2 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1320.67 ms. Allocated memory was 403.7 MB in the beginning and 629.1 MB in the end (delta: 225.4 MB). Free memory was 311.2 MB in the beginning and 597.8 MB in the end (delta: -286.6 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Unknown lemma type! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Unknown lemma type!: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0102_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_21-02-55-834.csv Received shutdown request...