java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/array-memsafety/count_down-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 14:55:29,945 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 14:55:29,946 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 14:55:29,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 14:55:29,959 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 14:55:29,959 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 14:55:29,960 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 14:55:29,962 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 14:55:29,963 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 14:55:29,964 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 14:55:29,965 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 14:55:29,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 14:55:29,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 14:55:29,966 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 14:55:29,967 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 14:55:29,969 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 14:55:29,971 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 14:55:29,972 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 14:55:29,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 14:55:29,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 14:55:29,976 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 14:55:29,980 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 14:55:29,980 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 14:55:29,981 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-02-04 14:55:29,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 14:55:29,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 14:55:29,991 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 14:55:29,991 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 14:55:29,991 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 14:55:29,991 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 14:55:29,992 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 14:55:29,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 14:55:29,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 14:55:29,993 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 14:55:29,993 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 14:55:29,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 14:55:29,993 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 14:55:29,993 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-04 14:55:30,019 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 14:55:30,027 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 14:55:30,029 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 14:55:30,030 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 14:55:30,030 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 14:55:30,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/count_down-alloca_true-valid-memsafety_true-termination.i [2018-02-04 14:55:30,153 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 14:55:30,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 14:55:30,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 14:55:30,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 14:55:30,159 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 14:55:30,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b316d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30, skipping insertion in model container [2018-02-04 14:55:30,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,172 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 14:55:30,198 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 14:55:30,286 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 14:55:30,299 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 14:55:30,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30 WrapperNode [2018-02-04 14:55:30,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 14:55:30,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 14:55:30,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 14:55:30,306 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 14:55:30,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (1/1) ... [2018-02-04 14:55:30,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 14:55:30,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 14:55:30,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 14:55:30,333 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 14:55:30,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 14:55:30,370 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 14:55:30,370 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 14:55:30,370 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 14:55:30,371 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 14:55:30,520 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 14:55:30,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 02:55:30 BoogieIcfgContainer [2018-02-04 14:55:30,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 14:55:30,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 14:55:30,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 14:55:30,524 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 14:55:30,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 02:55:30" (1/3) ... [2018-02-04 14:55:30,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc1abc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 02:55:30, skipping insertion in model container [2018-02-04 14:55:30,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:30" (2/3) ... [2018-02-04 14:55:30,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc1abc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 02:55:30, skipping insertion in model container [2018-02-04 14:55:30,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 02:55:30" (3/3) ... [2018-02-04 14:55:30,526 INFO L107 eAbstractionObserver]: Analyzing ICFG count_down-alloca_true-valid-memsafety_true-termination.i [2018-02-04 14:55:30,531 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 14:55:30,536 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-02-04 14:55:30,569 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 14:55:30,569 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 14:55:30,569 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-04 14:55:30,570 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 14:55:30,570 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 14:55:30,570 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 14:55:30,570 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 14:55:30,570 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 14:55:30,571 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 14:55:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-02-04 14:55:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 14:55:30,588 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:30,589 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:30,589 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:30,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1460855103, now seen corresponding path program 1 times [2018-02-04 14:55:30,627 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:30,667 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:30,728 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:55:30,728 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 14:55:30,729 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:30,730 INFO L182 omatonBuilderFactory]: Interpolants [48#false, 49#(not (= 0 |main_#t~malloc1.base|)), 50#(not (= 0 main_~arr~0.base)), 47#true] [2018-02-04 14:55:30,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:30,731 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 14:55:30,740 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 14:55:30,741 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 14:55:30,742 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2018-02-04 14:55:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:30,823 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2018-02-04 14:55:30,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 14:55:30,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-04 14:55:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:30,878 INFO L225 Difference]: With dead ends: 42 [2018-02-04 14:55:30,878 INFO L226 Difference]: Without dead ends: 39 [2018-02-04 14:55:30,880 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 14:55:30,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-02-04 14:55:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-02-04 14:55:30,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 14:55:30,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-02-04 14:55:30,902 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 13 [2018-02-04 14:55:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:30,903 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-02-04 14:55:30,903 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 14:55:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-02-04 14:55:30,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 14:55:30,903 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:30,903 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:30,903 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:30,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1955174720, now seen corresponding path program 1 times [2018-02-04 14:55:30,904 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:30,916 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:30,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:30,953 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:55:30,953 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 14:55:30,953 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:30,953 INFO L182 omatonBuilderFactory]: Interpolants [134#true, 135#false, 136#(= 1 (select |#valid| |main_#t~malloc1.base|)), 137#(= 1 (select |#valid| main_~arr~0.base))] [2018-02-04 14:55:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:30,954 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 14:55:30,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 14:55:30,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 14:55:30,955 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 4 states. [2018-02-04 14:55:31,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:31,026 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2018-02-04 14:55:31,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 14:55:31,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-04 14:55:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:31,027 INFO L225 Difference]: With dead ends: 35 [2018-02-04 14:55:31,027 INFO L226 Difference]: Without dead ends: 35 [2018-02-04 14:55:31,028 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 [2018-02-04 14:55:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-04 14:55:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-02-04 14:55:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-04 14:55:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2018-02-04 14:55:31,032 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 14 [2018-02-04 14:55:31,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:31,033 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2018-02-04 14:55:31,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 14:55:31,034 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2018-02-04 14:55:31,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 14:55:31,034 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:31,034 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:31,034 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:31,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1955174719, now seen corresponding path program 1 times [2018-02-04 14:55:31,036 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:31,050 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,154 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:55:31,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 14:55:31,154 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,155 INFO L182 omatonBuilderFactory]: Interpolants [210#true, 211#false, 212#(and (= (* 4 main_~length~0) (select |#length| |main_#t~malloc1.base|)) (= 0 |main_#t~malloc1.offset|)), 213#(and (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (= main_~arr~0.offset 0)), 214#(and (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (= main_~arr~0.offset 0) (= main_~i~0 0)), 215#(and (<= (+ (* 4 main_~i~0) 4) (select |#length| main_~arr~0.base)) (= main_~arr~0.offset 0) (= main_~i~0 0))] [2018-02-04 14:55:31,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,155 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 14:55:31,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 14:55:31,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-04 14:55:31,156 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2018-02-04 14:55:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:31,292 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2018-02-04 14:55:31,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 14:55:31,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-02-04 14:55:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:31,293 INFO L225 Difference]: With dead ends: 69 [2018-02-04 14:55:31,293 INFO L226 Difference]: Without dead ends: 69 [2018-02-04 14:55:31,293 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-02-04 14:55:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-02-04 14:55:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2018-02-04 14:55:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 14:55:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-02-04 14:55:31,296 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 14 [2018-02-04 14:55:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:31,296 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-02-04 14:55:31,296 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 14:55:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-02-04 14:55:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-04 14:55:31,296 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:31,296 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:31,296 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:31,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1688741209, now seen corresponding path program 1 times [2018-02-04 14:55:31,297 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:31,305 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,326 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:55:31,326 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 14:55:31,326 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,327 INFO L182 omatonBuilderFactory]: Interpolants [332#true, 333#false, 334#(<= 1 main_~length~0), 335#(and (<= 1 main_~length~0) (= main_~i~0 0))] [2018-02-04 14:55:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,327 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 14:55:31,327 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 14:55:31,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-02-04 14:55:31,328 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 4 states. [2018-02-04 14:55:31,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:31,356 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-02-04 14:55:31,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 14:55:31,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-02-04 14:55:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:31,360 INFO L225 Difference]: With dead ends: 40 [2018-02-04 14:55:31,360 INFO L226 Difference]: Without dead ends: 40 [2018-02-04 14:55:31,360 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-02-04 14:55:31,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-04 14:55:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-02-04 14:55:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 14:55:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2018-02-04 14:55:31,363 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 17 [2018-02-04 14:55:31,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:31,363 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2018-02-04 14:55:31,364 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 14:55:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-02-04 14:55:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-04 14:55:31,364 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:31,364 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:31,365 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:31,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2068353263, now seen corresponding path program 1 times [2018-02-04 14:55:31,365 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:31,375 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,409 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 14:55:31,409 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-02-04 14:55:31,409 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,409 INFO L182 omatonBuilderFactory]: Interpolants [416#false, 417#(<= main_~length~0 1), 418#(and (<= main_~length~0 1) (= main_~i~0 0)), 419#(<= main_~length~0 main_~i~0), 415#true] [2018-02-04 14:55:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,410 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 14:55:31,410 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 14:55:31,410 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-02-04 14:55:31,410 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 5 states. [2018-02-04 14:55:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:31,432 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2018-02-04 14:55:31,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 14:55:31,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-02-04 14:55:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:31,433 INFO L225 Difference]: With dead ends: 68 [2018-02-04 14:55:31,433 INFO L226 Difference]: Without dead ends: 68 [2018-02-04 14:55:31,433 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-02-04 14:55:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-02-04 14:55:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 49. [2018-02-04 14:55:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-04 14:55:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2018-02-04 14:55:31,436 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 19 [2018-02-04 14:55:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:31,436 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2018-02-04 14:55:31,436 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 14:55:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2018-02-04 14:55:31,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-04 14:55:31,436 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:31,437 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:31,437 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1639808019, now seen corresponding path program 1 times [2018-02-04 14:55:31,437 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:31,447 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,565 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 14:55:31,565 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-02-04 14:55:31,566 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,566 INFO L182 omatonBuilderFactory]: Interpolants [544#(and (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (<= 4 (+ main_~arr~0.offset (* 4 main_~i~0))) (= main_~arr~0.offset 0)), 545#(and (<= 4 (+ main_~arr~0.offset (* 4 main_~i~0))) (<= (+ (* 4 main_~i~0) 4) (select |#length| main_~arr~0.base)) (= main_~arr~0.offset 0)), 539#true, 540#false, 541#(and (= (* 4 main_~length~0) (select |#length| |main_#t~malloc1.base|)) (= 0 |main_#t~malloc1.offset|)), 542#(and (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (= main_~arr~0.offset 0)), 543#(and (<= 0 (+ main_~arr~0.offset (* 4 main_~i~0))) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (= main_~arr~0.offset 0))] [2018-02-04 14:55:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 14:55:31,567 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 14:55:31,567 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-02-04 14:55:31,567 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 7 states. [2018-02-04 14:55:31,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:31,671 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-02-04 14:55:31,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 14:55:31,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-02-04 14:55:31,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:31,672 INFO L225 Difference]: With dead ends: 49 [2018-02-04 14:55:31,672 INFO L226 Difference]: Without dead ends: 49 [2018-02-04 14:55:31,672 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-02-04 14:55:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-02-04 14:55:31,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2018-02-04 14:55:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-02-04 14:55:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2018-02-04 14:55:31,675 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 19 [2018-02-04 14:55:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:31,675 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2018-02-04 14:55:31,675 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 14:55:31,675 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2018-02-04 14:55:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 14:55:31,675 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:31,675 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:31,676 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:31,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1536064265, now seen corresponding path program 1 times [2018-02-04 14:55:31,676 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:31,682 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,751 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 14:55:31,751 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-02-04 14:55:31,751 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,751 INFO L182 omatonBuilderFactory]: Interpolants [656#(and (= main_~arr~0.offset 0) (<= (+ main_~arr~0.offset 4) (select |#length| main_~arr~0.base))), 657#(and (= main_~j~0 0) (= main_~arr~0.offset 0) (<= (+ main_~arr~0.offset 4) (select |#length| main_~arr~0.base))), 649#true, 650#false, 651#(<= 1 main_~length~0), 652#(and (= 0 |main_#t~malloc1.offset|) (<= 1 main_~length~0)), 653#(and (= main_~arr~0.offset 0) (<= 1 main_~length~0)), 654#(and (<= (+ main_~arr~0.offset (* 4 main_~i~0) 8) (+ (select |#length| main_~arr~0.base) (* 4 main_~length~0))) (= main_~arr~0.offset 0)), 655#(and (<= (+ main_~arr~0.offset (* 4 main_~i~0) 4) (+ (select |#length| main_~arr~0.base) (* 4 main_~length~0))) (= main_~arr~0.offset 0))] [2018-02-04 14:55:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:31,752 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 14:55:31,752 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 14:55:31,752 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-02-04 14:55:31,752 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 9 states. [2018-02-04 14:55:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:31,863 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-02-04 14:55:31,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 14:55:31,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-02-04 14:55:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:31,864 INFO L225 Difference]: With dead ends: 58 [2018-02-04 14:55:31,864 INFO L226 Difference]: Without dead ends: 58 [2018-02-04 14:55:31,865 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-02-04 14:55:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-04 14:55:31,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2018-02-04 14:55:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-02-04 14:55:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2018-02-04 14:55:31,869 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2018-02-04 14:55:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:31,869 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2018-02-04 14:55:31,869 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 14:55:31,869 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2018-02-04 14:55:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-04 14:55:31,870 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:31,870 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:31,870 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:31,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2040947294, now seen corresponding path program 1 times [2018-02-04 14:55:31,871 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:31,879 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:32,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:32,029 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 14:55:32,029 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-02-04 14:55:32,029 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:32,030 INFO L182 omatonBuilderFactory]: Interpolants [784#(and (<= main_~length~0 1) (= (* 4 main_~length~0) (select |#length| |main_#t~malloc1.base|))), 785#(and (<= main_~length~0 1) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base))), 786#(and (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (<= (+ main_~arr~0.offset (* 4 main_~i~0) (* 4 main_~length~0)) (select |#length| main_~arr~0.base))), 787#(and (<= (+ main_~arr~0.offset (* 4 main_~i~0) (* 4 main_~length~0)) (+ (select |#length| main_~arr~0.base) 4)) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base))), 788#(and (<= (+ main_~arr~0.offset (* 8 main_~length~0)) (+ (select |#length| main_~arr~0.base) 4)) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base))), 789#(and (<= (* 8 main_~length~0) (+ (* 4 main_~j~0) (select |#length| main_~arr~0.base) 4)) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base))), 790#(and (<= (* 8 main_~length~0) (+ (* 4 main_~j~0) (select |#length| main_~arr~0.base))) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base))), 781#true, 782#false, 783#(<= main_~length~0 1)] [2018-02-04 14:55:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:32,030 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-04 14:55:32,030 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-04 14:55:32,030 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-04 14:55:32,030 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 10 states. [2018-02-04 14:55:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:32,194 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2018-02-04 14:55:32,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-04 14:55:32,194 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2018-02-04 14:55:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:32,195 INFO L225 Difference]: With dead ends: 73 [2018-02-04 14:55:32,195 INFO L226 Difference]: Without dead ends: 73 [2018-02-04 14:55:32,195 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-02-04 14:55:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-02-04 14:55:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2018-02-04 14:55:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-02-04 14:55:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2018-02-04 14:55:32,198 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 28 [2018-02-04 14:55:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:32,198 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2018-02-04 14:55:32,198 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-04 14:55:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2018-02-04 14:55:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-04 14:55:32,199 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:32,199 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:32,199 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:32,199 INFO L82 PathProgramCache]: Analyzing trace with hash -2035165284, now seen corresponding path program 1 times [2018-02-04 14:55:32,200 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:32,207 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:32,333 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 14:55:32,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-02-04 14:55:32,333 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:32,333 INFO L182 omatonBuilderFactory]: Interpolants [946#true, 947#false, 948#(= (* 4 main_~length~0) (select |#length| |main_#t~malloc1.base|)), 949#(= (* 4 main_~length~0) (select |#length| main_~arr~0.base)), 950#(and (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (= main_~i~0 0)), 951#(and (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (<= (+ main_~arr~0.offset (* 4 main_~i~0) 4) (select |#length| main_~arr~0.base)) (= main_~i~0 0)), 952#(and (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)) (<= (+ main_~arr~0.offset (* 8 main_~i~0)) (+ (select |#length| main_~arr~0.base) 4))), 953#(and (<= (+ main_~arr~0.offset (* 8 main_~length~0)) (+ (select |#length| main_~arr~0.base) 4)) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base))), 954#(and (<= (* 8 main_~length~0) (+ (* 4 main_~j~0) (select |#length| main_~arr~0.base) 4)) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base))), 955#(and (<= (* 8 main_~length~0) (+ (* 4 main_~j~0) (select |#length| main_~arr~0.base))) (= (* 4 main_~length~0) (select |#length| main_~arr~0.base)))] [2018-02-04 14:55:32,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:32,333 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-04 14:55:32,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-04 14:55:32,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-02-04 14:55:32,334 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 10 states. [2018-02-04 14:55:32,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:32,453 INFO L93 Difference]: Finished difference Result 98 states and 108 transitions. [2018-02-04 14:55:32,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-04 14:55:32,453 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2018-02-04 14:55:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:32,454 INFO L225 Difference]: With dead ends: 98 [2018-02-04 14:55:32,454 INFO L226 Difference]: Without dead ends: 98 [2018-02-04 14:55:32,454 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2018-02-04 14:55:32,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-02-04 14:55:32,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 73. [2018-02-04 14:55:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-02-04 14:55:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2018-02-04 14:55:32,458 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 28 [2018-02-04 14:55:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:32,459 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2018-02-04 14:55:32,459 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-04 14:55:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2018-02-04 14:55:32,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-02-04 14:55:32,460 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:32,460 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:32,460 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:32,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1450783205, now seen corresponding path program 1 times [2018-02-04 14:55:32,461 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:32,471 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-04 14:55:32,504 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:55:32,504 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 14:55:32,504 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:32,504 INFO L182 omatonBuilderFactory]: Interpolants [1145#true, 1146#false, 1147#(= |#valid| |old(#valid)|), 1148#(= |old(#valid)| (store |#valid| |main_#t~malloc1.base| 0))] [2018-02-04 14:55:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-04 14:55:32,505 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 14:55:32,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 14:55:32,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 14:55:32,505 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 4 states. [2018-02-04 14:55:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:32,520 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2018-02-04 14:55:32,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 14:55:32,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-02-04 14:55:32,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:32,521 INFO L225 Difference]: With dead ends: 72 [2018-02-04 14:55:32,521 INFO L226 Difference]: Without dead ends: 45 [2018-02-04 14:55:32,521 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 14:55:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-02-04 14:55:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-02-04 14:55:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-02-04 14:55:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-02-04 14:55:32,523 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 30 [2018-02-04 14:55:32,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:32,523 INFO L432 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-02-04 14:55:32,523 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 14:55:32,523 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-02-04 14:55:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-02-04 14:55:32,524 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:32,524 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:32,524 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr7RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6RequiresViolation, mainErr0RequiresViolation, mainErr8EnsuresViolation]=== [2018-02-04 14:55:32,524 INFO L82 PathProgramCache]: Analyzing trace with hash 262979632, now seen corresponding path program 2 times [2018-02-04 14:55:32,524 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:32,536 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-04 14:55:32,602 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 14:55:32,602 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-02-04 14:55:32,602 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:32,603 INFO L182 omatonBuilderFactory]: Interpolants [1268#true, 1269#false, 1270#(<= (+ main_~arr~0.offset (* 4 main_~i~0) 4) (select |#length| main_~arr~0.base)), 1271#(<= (+ main_~arr~0.offset (* 4 main_~i~0)) (select |#length| main_~arr~0.base)), 1272#(<= (+ main_~arr~0.offset (* 4 main_~length~0)) (select |#length| main_~arr~0.base)), 1273#(and (<= (+ main_~arr~0.offset (* 4 main_~length~0)) (select |#length| main_~arr~0.base)) (<= 0 (+ main_~arr~0.offset (* 4 main_~j~0)))), 1274#(and (<= 4 (+ main_~arr~0.offset (* 4 main_~j~0))) (<= (+ main_~arr~0.offset (* 4 main_~length~0)) (select |#length| main_~arr~0.base))), 1275#(and (<= 4 (+ main_~arr~0.offset (* 4 main_~j~0))) (<= (+ main_~arr~0.offset (* 4 main_~j~0) 4) (select |#length| main_~arr~0.base)))] [2018-02-04 14:55:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-02-04 14:55:32,603 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 14:55:32,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 14:55:32,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-04 14:55:32,604 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-02-04 14:55:32,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:32,729 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2018-02-04 14:55:32,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 14:55:32,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-02-04 14:55:32,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:32,730 INFO L225 Difference]: With dead ends: 45 [2018-02-04 14:55:32,730 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 14:55:32,730 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-02-04 14:55:32,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 14:55:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 14:55:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 14:55:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 14:55:32,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-02-04 14:55:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:32,731 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 14:55:32,731 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 14:55:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 14:55:32,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 14:55:32,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 02:55:32 BoogieIcfgContainer [2018-02-04 14:55:32,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 14:55:32,737 INFO L168 Benchmark]: Toolchain (without parser) took 2583.30 ms. Allocated memory was 398.5 MB in the beginning and 620.8 MB in the end (delta: 222.3 MB). Free memory was 352.3 MB in the beginning and 416.0 MB in the end (delta: -63.7 MB). Peak memory consumption was 158.6 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:32,738 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 398.5 MB. Free memory is still 357.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 14:55:32,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.33 ms. Allocated memory is still 398.5 MB. Free memory was 352.3 MB in the beginning and 341.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:32,739 INFO L168 Benchmark]: Boogie Preprocessor took 26.89 ms. Allocated memory is still 398.5 MB. Free memory was 341.7 MB in the beginning and 339.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:32,739 INFO L168 Benchmark]: RCFGBuilder took 188.37 ms. Allocated memory is still 398.5 MB. Free memory was 339.1 MB in the beginning and 321.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:32,740 INFO L168 Benchmark]: TraceAbstraction took 2215.02 ms. Allocated memory was 398.5 MB in the beginning and 620.8 MB in the end (delta: 222.3 MB). Free memory was 321.9 MB in the beginning and 416.0 MB in the end (delta: -94.1 MB). Peak memory consumption was 128.2 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:32,741 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 398.5 MB. Free memory is still 357.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 150.33 ms. Allocated memory is still 398.5 MB. Free memory was 352.3 MB in the beginning and 341.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.89 ms. Allocated memory is still 398.5 MB. Free memory was 341.7 MB in the beginning and 339.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 188.37 ms. Allocated memory is still 398.5 MB. Free memory was 339.1 MB in the beginning and 321.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2215.02 ms. Allocated memory was 398.5 MB in the beginning and 620.8 MB in the end (delta: 222.3 MB). Free memory was 321.9 MB in the beginning and 416.0 MB in the end (delta: -94.1 MB). Peak memory consumption was 128.2 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: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 9 error locations. SAFE Result, 2.1s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 316 SDtfs, 929 SDslu, 606 SDs, 0 SdLazy, 591 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 23/39 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, 11 MinimizatonAttempts, 86 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 36882 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 23/39 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/count_down-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_14-55-32-748.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/count_down-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_14-55-32-748.csv Received shutdown request...