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_Camel.epf -i ../../../trunk/examples/svcomp/memsafety/test-0019_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-03 23:22:17,755 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-03 23:22:17,757 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-03 23:22:17,768 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-03 23:22:17,769 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-03 23:22:17,769 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-03 23:22:17,770 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-03 23:22:17,772 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-03 23:22:17,774 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-03 23:22:17,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-03 23:22:17,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-03 23:22:17,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-03 23:22:17,776 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-03 23:22:17,777 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-03 23:22:17,778 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-03 23:22:17,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-03 23:22:17,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-03 23:22:17,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-03 23:22:17,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-03 23:22:17,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-03 23:22:17,786 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-03 23:22:17,790 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-03 23:22:17,791 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-03 23:22:17,791 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-03 23:22:17,801 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-03 23:22:17,801 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-03 23:22:17,802 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-03 23:22:17,802 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-03 23:22:17,803 INFO L133 SettingsManager]: * Use SBE=true [2018-02-03 23:22:17,803 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-03 23:22:17,803 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-03 23:22:17,803 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-03 23:22:17,803 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-03 23:22:17,803 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-03 23:22:17,804 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-03 23:22:17,804 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-03 23:22:17,804 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-03 23:22:17,804 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-03 23:22:17,804 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-03 23:22:17,804 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-03 23:22:17,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-03 23:22:17,805 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-03 23:22:17,805 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-03 23:22:17,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-03 23:22:17,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-03 23:22:17,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-03 23:22:17,806 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-03 23:22:17,806 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-03 23:22:17,806 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-03 23:22:17,835 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-03 23:22:17,844 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-03 23:22:17,847 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-03 23:22:17,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-03 23:22:17,849 INFO L276 PluginConnector]: CDTParser initialized [2018-02-03 23:22:17,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0019_true-valid-memsafety_true-termination.i [2018-02-03 23:22:17,982 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-03 23:22:17,983 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-03 23:22:17,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-03 23:22:17,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-03 23:22:17,988 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-03 23:22:17,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.02 11:22:17" (1/1) ... [2018-02-03 23:22:17,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c55627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:17, skipping insertion in model container [2018-02-03 23:22:17,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.02 11:22:17" (1/1) ... [2018-02-03 23:22:18,004 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-03 23:22:18,032 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-03 23:22:18,119 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-03 23:22:18,129 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-03 23:22:18,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18 WrapperNode [2018-02-03 23:22:18,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-03 23:22:18,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-03 23:22:18,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-03 23:22:18,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-03 23:22:18,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (1/1) ... [2018-02-03 23:22:18,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (1/1) ... [2018-02-03 23:22:18,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (1/1) ... [2018-02-03 23:22:18,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (1/1) ... [2018-02-03 23:22:18,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (1/1) ... [2018-02-03 23:22:18,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (1/1) ... [2018-02-03 23:22:18,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (1/1) ... [2018-02-03 23:22:18,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-03 23:22:18,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-03 23:22:18,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-03 23:22:18,161 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-03 23:22:18,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (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 [2018-02-03 23:22:18,195 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-03 23:22:18,196 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-03 23:22:18,196 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_data [2018-02-03 23:22:18,196 INFO L136 BoogieDeclarations]: Found implementation of procedure free_data [2018-02-03 23:22:18,196 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-03 23:22:18,196 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-03 23:22:18,196 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-03 23:22:18,196 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-03 23:22:18,196 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-03 23:22:18,196 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-03 23:22:18,196 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-03 23:22:18,196 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-03 23:22:18,197 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_data [2018-02-03 23:22:18,197 INFO L128 BoogieDeclarations]: Found specification of procedure free_data [2018-02-03 23:22:18,197 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-03 23:22:18,197 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-03 23:22:18,197 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-03 23:22:18,325 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-03 23:22:18,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.02 11:22:18 BoogieIcfgContainer [2018-02-03 23:22:18,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-03 23:22:18,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-03 23:22:18,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-03 23:22:18,329 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-03 23:22:18,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.02 11:22:17" (1/3) ... [2018-02-03 23:22:18,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3796be3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.02 11:22:18, skipping insertion in model container [2018-02-03 23:22:18,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 11:22:18" (2/3) ... [2018-02-03 23:22:18,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3796be3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.02 11:22:18, skipping insertion in model container [2018-02-03 23:22:18,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.02 11:22:18" (3/3) ... [2018-02-03 23:22:18,331 INFO L107 eAbstractionObserver]: Analyzing ICFG test-0019_true-valid-memsafety_true-termination.i [2018-02-03 23:22:18,336 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-03 23:22:18,341 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-02-03 23:22:18,374 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-03 23:22:18,374 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-03 23:22:18,374 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-03 23:22:18,374 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-03 23:22:18,375 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-03 23:22:18,375 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-03 23:22:18,375 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-03 23:22:18,375 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-03 23:22:18,376 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-03 23:22:18,387 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-02-03 23:22:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-03 23:22:18,396 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 23:22:18,397 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 23:22:18,397 INFO L371 AbstractCegarLoop]: === Iteration 1 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr2RequiresViolation, free_dataErr0RequiresViolation]=== [2018-02-03 23:22:18,401 INFO L82 PathProgramCache]: Analyzing trace with hash 345440703, now seen corresponding path program 1 times [2018-02-03 23:22:18,403 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 23:22:18,403 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 23:22:18,447 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:18,447 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 23:22:18,447 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 23:22:18,495 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 23:22:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 23:22:18,629 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 23:22:18,629 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-03 23:22:18,630 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-03 23:22:18,637 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-03 23:22:18,638 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-03 23:22:18,639 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 5 states. [2018-02-03 23:22:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 23:22:18,791 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-02-03 23:22:18,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-03 23:22:18,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-02-03 23:22:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 23:22:18,798 INFO L225 Difference]: With dead ends: 39 [2018-02-03 23:22:18,798 INFO L226 Difference]: Without dead ends: 36 [2018-02-03 23:22:18,799 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-03 23:22:18,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-03 23:22:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-02-03 23:22:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-02-03 23:22:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-02-03 23:22:18,825 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 10 [2018-02-03 23:22:18,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 23:22:18,825 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-02-03 23:22:18,825 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-03 23:22:18,826 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-02-03 23:22:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-03 23:22:18,826 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 23:22:18,826 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 23:22:18,826 INFO L371 AbstractCegarLoop]: === Iteration 2 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr2RequiresViolation, free_dataErr0RequiresViolation]=== [2018-02-03 23:22:18,826 INFO L82 PathProgramCache]: Analyzing trace with hash 345440704, now seen corresponding path program 1 times [2018-02-03 23:22:18,826 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 23:22:18,826 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 23:22:18,827 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:18,827 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 23:22:18,827 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 23:22:18,841 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 23:22:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 23:22:18,920 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 23:22:18,920 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-03 23:22:18,922 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-03 23:22:18,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-03 23:22:18,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-03 23:22:18,923 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 6 states. [2018-02-03 23:22:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 23:22:18,992 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-02-03 23:22:18,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-03 23:22:18,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-02-03 23:22:18,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 23:22:18,993 INFO L225 Difference]: With dead ends: 32 [2018-02-03 23:22:18,993 INFO L226 Difference]: Without dead ends: 32 [2018-02-03 23:22:18,994 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-03 23:22:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-03 23:22:18,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-02-03 23:22:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-03 23:22:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-02-03 23:22:18,997 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 10 [2018-02-03 23:22:18,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 23:22:18,998 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-02-03 23:22:18,998 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-03 23:22:18,998 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-02-03 23:22:18,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-03 23:22:18,998 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 23:22:18,999 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] [2018-02-03 23:22:18,999 INFO L371 AbstractCegarLoop]: === Iteration 3 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr2RequiresViolation, free_dataErr0RequiresViolation]=== [2018-02-03 23:22:18,999 INFO L82 PathProgramCache]: Analyzing trace with hash 569818482, now seen corresponding path program 1 times [2018-02-03 23:22:18,999 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 23:22:18,999 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 23:22:19,000 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:19,000 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 23:22:19,000 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 23:22:19,019 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 23:22:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 23:22:19,121 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 23:22:19,121 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-03 23:22:19,121 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-03 23:22:19,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-03 23:22:19,122 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-02-03 23:22:19,122 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 10 states. [2018-02-03 23:22:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 23:22:19,198 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-02-03 23:22:19,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-03 23:22:19,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-02-03 23:22:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 23:22:19,199 INFO L225 Difference]: With dead ends: 31 [2018-02-03 23:22:19,199 INFO L226 Difference]: Without dead ends: 31 [2018-02-03 23:22:19,199 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-02-03 23:22:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-02-03 23:22:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-02-03 23:22:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-03 23:22:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-02-03 23:22:19,203 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 20 [2018-02-03 23:22:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 23:22:19,203 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-02-03 23:22:19,203 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-03 23:22:19,203 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-02-03 23:22:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-03 23:22:19,204 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 23:22:19,204 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] [2018-02-03 23:22:19,204 INFO L371 AbstractCegarLoop]: === Iteration 4 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr2RequiresViolation, free_dataErr0RequiresViolation]=== [2018-02-03 23:22:19,204 INFO L82 PathProgramCache]: Analyzing trace with hash 569818483, now seen corresponding path program 1 times [2018-02-03 23:22:19,204 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 23:22:19,205 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 23:22:19,205 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:19,205 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 23:22:19,206 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 23:22:19,220 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 23:22:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 23:22:19,308 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 23:22:19,308 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-03 23:22:19,308 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-03 23:22:19,308 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-03 23:22:19,309 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-02-03 23:22:19,309 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 10 states. [2018-02-03 23:22:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 23:22:19,387 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-02-03 23:22:19,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-03 23:22:19,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2018-02-03 23:22:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 23:22:19,388 INFO L225 Difference]: With dead ends: 33 [2018-02-03 23:22:19,388 INFO L226 Difference]: Without dead ends: 33 [2018-02-03 23:22:19,389 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-02-03 23:22:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-02-03 23:22:19,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2018-02-03 23:22:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-02-03 23:22:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-02-03 23:22:19,392 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 20 [2018-02-03 23:22:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 23:22:19,392 INFO L432 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-02-03 23:22:19,392 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-03 23:22:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-02-03 23:22:19,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-03 23:22:19,393 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 23:22:19,393 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 23:22:19,393 INFO L371 AbstractCegarLoop]: === Iteration 5 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr2RequiresViolation, free_dataErr0RequiresViolation]=== [2018-02-03 23:22:19,393 INFO L82 PathProgramCache]: Analyzing trace with hash 484503765, now seen corresponding path program 1 times [2018-02-03 23:22:19,393 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 23:22:19,393 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 23:22:19,394 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:19,394 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 23:22:19,394 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 23:22:19,410 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 23:22:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 23:22:19,512 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 23:22:19,513 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-03 23:22:19,513 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-03 23:22:19,513 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-03 23:22:19,513 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-02-03 23:22:19,514 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 10 states. [2018-02-03 23:22:19,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 23:22:19,587 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-02-03 23:22:19,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-03 23:22:19,587 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2018-02-03 23:22:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 23:22:19,588 INFO L225 Difference]: With dead ends: 29 [2018-02-03 23:22:19,588 INFO L226 Difference]: Without dead ends: 29 [2018-02-03 23:22:19,588 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-02-03 23:22:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-02-03 23:22:19,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-02-03 23:22:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-02-03 23:22:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-02-03 23:22:19,591 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 21 [2018-02-03 23:22:19,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 23:22:19,591 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-02-03 23:22:19,592 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-03 23:22:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-02-03 23:22:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-03 23:22:19,592 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 23:22:19,592 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 23:22:19,592 INFO L371 AbstractCegarLoop]: === Iteration 6 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr2RequiresViolation, free_dataErr0RequiresViolation]=== [2018-02-03 23:22:19,593 INFO L82 PathProgramCache]: Analyzing trace with hash 484503766, now seen corresponding path program 1 times [2018-02-03 23:22:19,593 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 23:22:19,593 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 23:22:19,594 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:19,594 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 23:22:19,594 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 23:22:19,608 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 23:22:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 23:22:19,927 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 23:22:19,927 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-02-03 23:22:19,927 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-03 23:22:19,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-03 23:22:19,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-02-03 23:22:19,928 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-02-03 23:22:20,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 23:22:20,223 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-02-03 23:22:20,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-03 23:22:20,223 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2018-02-03 23:22:20,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 23:22:20,223 INFO L225 Difference]: With dead ends: 31 [2018-02-03 23:22:20,223 INFO L226 Difference]: Without dead ends: 31 [2018-02-03 23:22:20,224 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2018-02-03 23:22:20,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-02-03 23:22:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-02-03 23:22:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-03 23:22:20,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-02-03 23:22:20,225 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 21 [2018-02-03 23:22:20,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 23:22:20,226 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-02-03 23:22:20,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-03 23:22:20,226 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-02-03 23:22:20,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-03 23:22:20,226 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 23:22:20,226 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] [2018-02-03 23:22:20,226 INFO L371 AbstractCegarLoop]: === Iteration 7 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr2RequiresViolation, free_dataErr0RequiresViolation]=== [2018-02-03 23:22:20,227 INFO L82 PathProgramCache]: Analyzing trace with hash -997094437, now seen corresponding path program 1 times [2018-02-03 23:22:20,227 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 23:22:20,227 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 23:22:20,227 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:20,227 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 23:22:20,227 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 23:22:20,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 23:22:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 23:22:20,377 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 23:22:20,377 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-02-03 23:22:20,377 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-03 23:22:20,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-03 23:22:20,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2018-02-03 23:22:20,378 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 13 states. [2018-02-03 23:22:20,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 23:22:20,533 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2018-02-03 23:22:20,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-03 23:22:20,533 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 25 [2018-02-03 23:22:20,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 23:22:20,533 INFO L225 Difference]: With dead ends: 30 [2018-02-03 23:22:20,534 INFO L226 Difference]: Without dead ends: 28 [2018-02-03 23:22:20,534 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-02-03 23:22:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-02-03 23:22:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-02-03 23:22:20,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-02-03 23:22:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2018-02-03 23:22:20,536 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 25 [2018-02-03 23:22:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 23:22:20,537 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2018-02-03 23:22:20,537 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-03 23:22:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2018-02-03 23:22:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-03 23:22:20,539 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 23:22:20,539 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] [2018-02-03 23:22:20,539 INFO L371 AbstractCegarLoop]: === Iteration 8 === [alloc_dataErr2RequiresViolation, alloc_dataErr0RequiresViolation, alloc_dataErr1RequiresViolation, alloc_dataErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, free_dataErr3RequiresViolation, free_dataErr1RequiresViolation, free_dataErr2RequiresViolation, free_dataErr0RequiresViolation]=== [2018-02-03 23:22:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash -502821665, now seen corresponding path program 1 times [2018-02-03 23:22:20,539 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 23:22:20,539 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 23:22:20,540 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:20,540 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 23:22:20,540 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 23:22:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 23:22:20,553 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 23:22:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 23:22:21,079 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 23:22:21,079 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-02-03 23:22:21,079 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-02-03 23:22:21,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-02-03 23:22:21,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-02-03 23:22:21,084 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 17 states. [2018-02-03 23:22:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 23:22:21,608 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2018-02-03 23:22:21,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-02-03 23:22:21,609 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2018-02-03 23:22:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 23:22:21,610 INFO L225 Difference]: With dead ends: 27 [2018-02-03 23:22:21,610 INFO L226 Difference]: Without dead ends: 0 [2018-02-03 23:22:21,610 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2018-02-03 23:22:21,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-03 23:22:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-03 23:22:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-03 23:22:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-03 23:22:21,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-02-03 23:22:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 23:22:21,612 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-03 23:22:21,612 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-02-03 23:22:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-03 23:22:21,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-03 23:22:21,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.02 11:22:21 BoogieIcfgContainer [2018-02-03 23:22:21,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-03 23:22:21,616 INFO L168 Benchmark]: Toolchain (without parser) took 3633.03 ms. Allocated memory was 400.6 MB in the beginning and 680.5 MB in the end (delta: 280.0 MB). Free memory was 357.4 MB in the beginning and 528.3 MB in the end (delta: -170.8 MB). Peak memory consumption was 109.2 MB. Max. memory is 5.3 GB. [2018-02-03 23:22:21,616 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 400.6 MB. Free memory is still 364.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-03 23:22:21,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.91 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 346.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-03 23:22:21,617 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 ms. Allocated memory is still 400.6 MB. Free memory was 346.9 MB in the beginning and 345.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-03 23:22:21,617 INFO L168 Benchmark]: RCFGBuilder took 165.30 ms. Allocated memory is still 400.6 MB. Free memory was 345.5 MB in the beginning and 327.5 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 5.3 GB. [2018-02-03 23:22:21,617 INFO L168 Benchmark]: TraceAbstraction took 3288.69 ms. Allocated memory was 400.6 MB in the beginning and 680.5 MB in the end (delta: 280.0 MB). Free memory was 327.5 MB in the beginning and 528.3 MB in the end (delta: -200.7 MB). Peak memory consumption was 79.3 MB. Max. memory is 5.3 GB. [2018-02-03 23:22:21,618 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 400.6 MB. Free memory is still 364.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 150.91 ms. Allocated memory is still 400.6 MB. Free memory was 357.4 MB in the beginning and 346.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 25.28 ms. Allocated memory is still 400.6 MB. Free memory was 346.9 MB in the beginning and 345.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 165.30 ms. Allocated memory is still 400.6 MB. Free memory was 345.5 MB in the beginning and 327.5 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3288.69 ms. Allocated memory was 400.6 MB in the beginning and 680.5 MB in the end (delta: 280.0 MB). Free memory was 327.5 MB in the beginning and 528.3 MB in the end (delta: -200.7 MB). Peak memory consumption was 79.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 637]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 13 error locations. SAFE Result, 3.2s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 153 SDtfs, 150 SDslu, 656 SDs, 0 SdLazy, 892 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 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, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 35449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-03_23-22-21-624.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0019_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-03_23-22-21-624.csv Received shutdown request...