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/array-memsafety/cstrcpy-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 18:22:32,691 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 18:22:32,692 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 18:22:32,702 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 18:22:32,702 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 18:22:32,703 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 18:22:32,704 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 18:22:32,705 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 18:22:32,706 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 18:22:32,707 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 18:22:32,707 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 18:22:32,707 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 18:22:32,708 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 18:22:32,709 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 18:22:32,709 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 18:22:32,711 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 18:22:32,713 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 18:22:32,714 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 18:22:32,715 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 18:22:32,716 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 18:22:32,718 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 18:22:32,722 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 [2018-02-02 18:22:32,732 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 18:22:32,732 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 18:22:32,733 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 18:22:32,733 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 18:22:32,734 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 18:22:32,734 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 18:22:32,734 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 18:22:32,734 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 18:22:32,734 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 18:22:32,734 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 18:22:32,735 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 18:22:32,735 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 18:22:32,735 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 18:22:32,735 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 18:22:32,735 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 18:22:32,735 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 18:22:32,735 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 18:22:32,736 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 18:22:32,736 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 18:22:32,736 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 18:22:32,736 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 18:22:32,736 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 18:22:32,736 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 18:22:32,737 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 18:22:32,737 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 18:22:32,764 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 18:22:32,773 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 18:22:32,776 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 18:22:32,777 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 18:22:32,777 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 18:22:32,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrcpy-alloca_true-valid-memsafety_true-termination.i [2018-02-02 18:22:32,895 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 18:22:32,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 18:22:32,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 18:22:32,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 18:22:32,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 18:22:32,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 06:22:32" (1/1) ... [2018-02-02 18:22:32,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7deabca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:32, skipping insertion in model container [2018-02-02 18:22:32,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 06:22:32" (1/1) ... [2018-02-02 18:22:32,917 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 18:22:32,944 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 18:22:33,020 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 18:22:33,034 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 18:22:33,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33 WrapperNode [2018-02-02 18:22:33,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 18:22:33,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 18:22:33,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 18:22:33,040 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 18:22:33,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (1/1) ... [2018-02-02 18:22:33,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (1/1) ... [2018-02-02 18:22:33,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (1/1) ... [2018-02-02 18:22:33,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (1/1) ... [2018-02-02 18:22:33,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (1/1) ... [2018-02-02 18:22:33,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (1/1) ... [2018-02-02 18:22:33,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (1/1) ... [2018-02-02 18:22:33,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 18:22:33,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 18:22:33,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 18:22:33,072 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 18:22:33,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 18:22:33,107 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 18:22:33,108 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 18:22:33,108 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcpy [2018-02-02 18:22:33,108 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 18:22:33,108 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 18:22:33,108 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 18:22:33,108 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 18:22:33,108 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 18:22:33,109 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 18:22:33,109 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 18:22:33,109 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcpy [2018-02-02 18:22:33,109 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 18:22:33,109 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 18:22:33,109 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 18:22:33,248 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 18:22:33,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 06:22:33 BoogieIcfgContainer [2018-02-02 18:22:33,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 18:22:33,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 18:22:33,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 18:22:33,251 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 18:22:33,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 06:22:32" (1/3) ... [2018-02-02 18:22:33,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cad8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 06:22:33, skipping insertion in model container [2018-02-02 18:22:33,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:22:33" (2/3) ... [2018-02-02 18:22:33,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cad8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 06:22:33, skipping insertion in model container [2018-02-02 18:22:33,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 06:22:33" (3/3) ... [2018-02-02 18:22:33,253 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrcpy-alloca_true-valid-memsafety_true-termination.i [2018-02-02 18:22:33,258 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 18:22:33,263 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-02-02 18:22:33,292 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 18:22:33,292 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 18:22:33,292 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 18:22:33,292 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 18:22:33,292 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 18:22:33,293 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 18:22:33,293 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 18:22:33,293 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 18:22:33,293 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 18:22:33,306 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-02-02 18:22:33,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-02 18:22:33,313 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:33,314 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:33,314 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:33,318 INFO L82 PathProgramCache]: Analyzing trace with hash -341828685, now seen corresponding path program 1 times [2018-02-02 18:22:33,320 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:33,320 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:33,361 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,361 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:33,361 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:33,406 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:33,459 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:33,459 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 18:22:33,461 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 18:22:33,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 18:22:33,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 18:22:33,472 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2018-02-02 18:22:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:33,546 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-02-02 18:22:33,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 18:22:33,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-02-02 18:22:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:33,555 INFO L225 Difference]: With dead ends: 44 [2018-02-02 18:22:33,555 INFO L226 Difference]: Without dead ends: 40 [2018-02-02 18:22:33,556 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 [2018-02-02 18:22:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-02 18:22:33,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-02-02 18:22:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-02 18:22:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-02-02 18:22:33,622 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2018-02-02 18:22:33,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:33,622 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-02-02 18:22:33,622 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 18:22:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-02-02 18:22:33,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-02 18:22:33,623 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:33,623 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:33,623 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:33,623 INFO L82 PathProgramCache]: Analyzing trace with hash -341826763, now seen corresponding path program 1 times [2018-02-02 18:22:33,623 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:33,623 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:33,624 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,624 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:33,624 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:33,633 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:33,655 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:33,655 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 18:22:33,656 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 18:22:33,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 18:22:33,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 18:22:33,657 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 3 states. [2018-02-02 18:22:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:33,680 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-02-02 18:22:33,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 18:22:33,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-02-02 18:22:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:33,681 INFO L225 Difference]: With dead ends: 39 [2018-02-02 18:22:33,681 INFO L226 Difference]: Without dead ends: 38 [2018-02-02 18:22:33,682 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 18:22:33,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-02 18:22:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-02-02 18:22:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 18:22:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-02 18:22:33,686 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2018-02-02 18:22:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:33,686 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-02 18:22:33,686 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 18:22:33,686 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-02 18:22:33,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 18:22:33,686 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:33,686 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:33,686 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:33,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1560659641, now seen corresponding path program 1 times [2018-02-02 18:22:33,687 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:33,687 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:33,687 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,688 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:33,688 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:33,702 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:33,730 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:33,730 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 18:22:33,730 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 18:22:33,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 18:22:33,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 18:22:33,731 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2018-02-02 18:22:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:33,768 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-02-02 18:22:33,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 18:22:33,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-02 18:22:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:33,768 INFO L225 Difference]: With dead ends: 36 [2018-02-02 18:22:33,769 INFO L226 Difference]: Without dead ends: 36 [2018-02-02 18:22:33,769 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 18:22:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-02 18:22:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-02-02 18:22:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-02-02 18:22:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-02-02 18:22:33,771 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 14 [2018-02-02 18:22:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:33,771 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-02-02 18:22:33,771 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 18:22:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-02-02 18:22:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 18:22:33,772 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:33,772 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:33,772 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:33,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1560659640, now seen corresponding path program 1 times [2018-02-02 18:22:33,772 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:33,772 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:33,773 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,773 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:33,773 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:33,781 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:33,829 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:33,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 18:22:33,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 18:22:33,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 18:22:33,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 18:22:33,831 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2018-02-02 18:22:33,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:33,856 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-02-02 18:22:33,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 18:22:33,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 18:22:33,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:33,858 INFO L225 Difference]: With dead ends: 35 [2018-02-02 18:22:33,858 INFO L226 Difference]: Without dead ends: 35 [2018-02-02 18:22:33,858 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-02-02 18:22:33,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-02 18:22:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-02-02 18:22:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-02 18:22:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-02-02 18:22:33,861 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 14 [2018-02-02 18:22:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:33,862 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-02-02 18:22:33,862 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 18:22:33,862 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-02-02 18:22:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-02 18:22:33,863 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:33,863 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:33,863 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:33,863 INFO L82 PathProgramCache]: Analyzing trace with hash -394620288, now seen corresponding path program 1 times [2018-02-02 18:22:33,863 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:33,863 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:33,864 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,864 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:33,864 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:33,879 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:33,914 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:33,914 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 18:22:33,914 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 18:22:33,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 18:22:33,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 18:22:33,915 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2018-02-02 18:22:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:33,978 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-02-02 18:22:33,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 18:22:33,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-02-02 18:22:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:33,979 INFO L225 Difference]: With dead ends: 34 [2018-02-02 18:22:33,979 INFO L226 Difference]: Without dead ends: 34 [2018-02-02 18:22:33,979 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-02-02 18:22:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-02-02 18:22:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-02-02 18:22:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-02 18:22:33,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-02-02 18:22:33,981 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 19 [2018-02-02 18:22:33,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:33,981 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-02-02 18:22:33,981 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 18:22:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-02-02 18:22:33,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-02 18:22:33,981 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:33,982 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:33,982 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:33,982 INFO L82 PathProgramCache]: Analyzing trace with hash -394620287, now seen corresponding path program 1 times [2018-02-02 18:22:33,982 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:33,982 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:33,982 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,982 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:33,983 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:33,992 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:34,066 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:34,066 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 18:22:34,066 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 18:22:34,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 18:22:34,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-02-02 18:22:34,067 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 9 states. [2018-02-02 18:22:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:34,160 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2018-02-02 18:22:34,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 18:22:34,161 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-02-02 18:22:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:34,162 INFO L225 Difference]: With dead ends: 41 [2018-02-02 18:22:34,162 INFO L226 Difference]: Without dead ends: 41 [2018-02-02 18:22:34,162 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-02-02 18:22:34,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-02 18:22:34,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-02-02 18:22:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 18:22:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-02 18:22:34,166 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 19 [2018-02-02 18:22:34,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:34,166 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-02 18:22:34,167 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 18:22:34,167 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-02 18:22:34,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 18:22:34,167 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:34,167 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:34,167 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:34,168 INFO L82 PathProgramCache]: Analyzing trace with hash 651672940, now seen corresponding path program 1 times [2018-02-02 18:22:34,168 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:34,168 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:34,169 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:34,169 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:34,169 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:34,184 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:34,264 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:34,264 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 18:22:34,264 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 18:22:34,264 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 18:22:34,264 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-02 18:22:34,265 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 9 states. [2018-02-02 18:22:34,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:34,341 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-02-02 18:22:34,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 18:22:34,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-02 18:22:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:34,342 INFO L225 Difference]: With dead ends: 36 [2018-02-02 18:22:34,342 INFO L226 Difference]: Without dead ends: 36 [2018-02-02 18:22:34,342 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-02-02 18:22:34,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-02 18:22:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-02-02 18:22:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-02-02 18:22:34,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-02-02 18:22:34,345 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 20 [2018-02-02 18:22:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:34,345 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-02-02 18:22:34,346 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 18:22:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-02-02 18:22:34,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 18:22:34,346 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:34,346 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:34,346 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:34,347 INFO L82 PathProgramCache]: Analyzing trace with hash 651672941, now seen corresponding path program 1 times [2018-02-02 18:22:34,347 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:34,347 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:34,347 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:34,348 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:34,348 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:34,357 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:34,428 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:34,428 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 18:22:34,428 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 18:22:34,428 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 18:22:34,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-02 18:22:34,429 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 9 states. [2018-02-02 18:22:34,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:34,527 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-02-02 18:22:34,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 18:22:34,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-02-02 18:22:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:34,528 INFO L225 Difference]: With dead ends: 38 [2018-02-02 18:22:34,528 INFO L226 Difference]: Without dead ends: 38 [2018-02-02 18:22:34,528 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-02-02 18:22:34,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-02 18:22:34,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-02-02 18:22:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 18:22:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-02-02 18:22:34,529 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 20 [2018-02-02 18:22:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:34,530 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-02-02 18:22:34,530 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 18:22:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-02-02 18:22:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 18:22:34,530 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:34,530 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] [2018-02-02 18:22:34,530 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:34,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1352456705, now seen corresponding path program 1 times [2018-02-02 18:22:34,530 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:34,530 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:34,531 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:34,531 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:34,531 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:34,541 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:34,633 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:34,633 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-02-02 18:22:34,633 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-02 18:22:34,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-02 18:22:34,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-02-02 18:22:34,634 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 10 states. [2018-02-02 18:22:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:34,732 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2018-02-02 18:22:34,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-02 18:22:34,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-02-02 18:22:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:34,733 INFO L225 Difference]: With dead ends: 60 [2018-02-02 18:22:34,733 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 18:22:34,733 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-02-02 18:22:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 18:22:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2018-02-02 18:22:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-02-02 18:22:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-02-02 18:22:34,737 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 24 [2018-02-02 18:22:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:34,737 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-02-02 18:22:34,737 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-02 18:22:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-02-02 18:22:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 18:22:34,738 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:34,738 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] [2018-02-02 18:22:34,738 INFO L371 AbstractCegarLoop]: === Iteration 10 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:34,738 INFO L82 PathProgramCache]: Analyzing trace with hash -235891197, now seen corresponding path program 1 times [2018-02-02 18:22:34,738 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:34,738 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:34,739 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:34,739 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:34,739 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:34,750 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:34,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:34,877 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 18:22:34,877 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 18:22:34,882 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:34,912 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 18:22:34,953 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-02-02 18:22:34,956 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-02-02 18:22:34,957 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:34,958 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:22:34,967 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 18:22:34,967 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-02-02 18:22:35,054 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-02-02 18:22:35,059 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-02-02 18:22:35,059 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 18:22:35,062 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 18:22:35,071 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 18:22:35,071 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:29 [2018-02-02 18:22:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:35,146 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 18:22:35,147 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2018-02-02 18:22:35,147 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-02-02 18:22:35,147 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-02-02 18:22:35,147 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2018-02-02 18:22:35,147 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 17 states. [2018-02-02 18:22:35,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:35,510 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-02-02 18:22:35,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-02 18:22:35,510 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 24 [2018-02-02 18:22:35,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:35,512 INFO L225 Difference]: With dead ends: 60 [2018-02-02 18:22:35,512 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 18:22:35,512 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2018-02-02 18:22:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 18:22:35,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-02-02 18:22:35,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-02-02 18:22:35,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2018-02-02 18:22:35,514 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 24 [2018-02-02 18:22:35,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:35,515 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2018-02-02 18:22:35,515 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-02-02 18:22:35,515 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2018-02-02 18:22:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 18:22:35,515 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:35,515 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:35,515 INFO L371 AbstractCegarLoop]: === Iteration 11 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:35,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1277307435, now seen corresponding path program 1 times [2018-02-02 18:22:35,515 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:35,515 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:35,516 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:35,516 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:35,516 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:35,523 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:35,720 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 18:22:35,720 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 18:22:35,726 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:35,743 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 18:22:35,747 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 18:22:35,747 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:35,752 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 18:22:35,752 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:35,756 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:22:35,756 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:19, output treesize:14 [2018-02-02 18:22:35,797 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 18:22:35,806 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 18:22:35,808 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-02 18:22:35,808 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:35,816 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-02-02 18:22:35,816 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:35,821 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:22:35,821 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:15 [2018-02-02 18:22:36,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:36,063 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 18:22:36,063 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-02-02 18:22:36,063 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-02-02 18:22:36,063 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-02-02 18:22:36,064 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2018-02-02 18:22:36,064 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 26 states. [2018-02-02 18:22:36,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:36,657 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-02-02 18:22:36,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-02-02 18:22:36,657 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2018-02-02 18:22:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:36,658 INFO L225 Difference]: With dead ends: 61 [2018-02-02 18:22:36,658 INFO L226 Difference]: Without dead ends: 61 [2018-02-02 18:22:36,659 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1446, Unknown=0, NotChecked=0, Total=1640 [2018-02-02 18:22:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-02-02 18:22:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2018-02-02 18:22:36,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 18:22:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-02-02 18:22:36,663 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 25 [2018-02-02 18:22:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:36,663 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-02-02 18:22:36,663 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-02-02 18:22:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-02-02 18:22:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-02 18:22:36,664 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:36,664 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:36,664 INFO L371 AbstractCegarLoop]: === Iteration 12 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:36,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1119438913, now seen corresponding path program 2 times [2018-02-02 18:22:36,664 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:36,664 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:36,665 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:36,665 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:22:36,665 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:36,676 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:36,913 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 18:22:36,913 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 18:22:36,918 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-02 18:22:36,935 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-02 18:22:36,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-02 18:22:36,937 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 18:22:36,940 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 18:22:36,940 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:36,941 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:22:36,941 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-02-02 18:22:36,943 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 18:22:36,944 INFO L700 Elim1Store]: detected not equals via solver [2018-02-02 18:22:36,944 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-02 18:22:36,945 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:36,948 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-02-02 18:22:36,948 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:36,951 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:22:36,951 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2018-02-02 18:22:36,984 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-02-02 18:22:36,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-02-02 18:22:36,985 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:36,986 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:22:36,989 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 18:22:36,989 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:23 [2018-02-02 18:22:37,097 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2018-02-02 18:22:37,098 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-02-02 18:22:37,099 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-02 18:22:37,101 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:22:37,106 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-02-02 18:22:37,106 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:37, output treesize:22 [2018-02-02 18:22:37,171 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-02-02 18:22:37,175 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2018-02-02 18:22:37,175 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-02 18:22:37,177 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-02 18:22:37,183 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-02 18:22:37,183 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:37 [2018-02-02 18:22:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:37,236 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 18:22:37,236 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2018-02-02 18:22:37,236 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-02-02 18:22:37,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-02-02 18:22:37,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2018-02-02 18:22:37,237 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 26 states. [2018-02-02 18:22:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:38,024 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-02-02 18:22:38,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-02-02 18:22:38,024 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 29 [2018-02-02 18:22:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:38,024 INFO L225 Difference]: With dead ends: 60 [2018-02-02 18:22:38,024 INFO L226 Difference]: Without dead ends: 60 [2018-02-02 18:22:38,025 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=205, Invalid=1601, Unknown=0, NotChecked=0, Total=1806 [2018-02-02 18:22:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-02 18:22:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2018-02-02 18:22:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-02-02 18:22:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2018-02-02 18:22:38,027 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 29 [2018-02-02 18:22:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:38,028 INFO L432 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2018-02-02 18:22:38,028 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-02-02 18:22:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2018-02-02 18:22:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-02-02 18:22:38,029 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:22:38,029 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:22:38,029 INFO L371 AbstractCegarLoop]: === Iteration 13 === [cstrcpyErr2RequiresViolation, cstrcpyErr3RequiresViolation, cstrcpyErr0RequiresViolation, cstrcpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-02 18:22:38,029 INFO L82 PathProgramCache]: Analyzing trace with hash 216235552, now seen corresponding path program 1 times [2018-02-02 18:22:38,029 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:22:38,029 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:22:38,030 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:38,030 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-02 18:22:38,030 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:22:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:22:38,038 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:22:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:22:38,102 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:22:38,102 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 18:22:38,102 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 18:22:38,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 18:22:38,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 18:22:38,103 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 6 states. [2018-02-02 18:22:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:22:38,148 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2018-02-02 18:22:38,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 18:22:38,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2018-02-02 18:22:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:22:38,149 INFO L225 Difference]: With dead ends: 46 [2018-02-02 18:22:38,149 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 18:22:38,149 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-02 18:22:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 18:22:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 18:22:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 18:22:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 18:22:38,149 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-02-02 18:22:38,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:22:38,149 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 18:22:38,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 18:22:38,150 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 18:22:38,150 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 18:22:38,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 06:22:38 BoogieIcfgContainer [2018-02-02 18:22:38,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 18:22:38,153 INFO L168 Benchmark]: Toolchain (without parser) took 5257.42 ms. Allocated memory was 406.3 MB in the beginning and 708.3 MB in the end (delta: 302.0 MB). Free memory was 362.8 MB in the beginning and 621.3 MB in the end (delta: -258.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 5.3 GB. [2018-02-02 18:22:38,154 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 406.3 MB. Free memory is still 368.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 18:22:38,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.36 ms. Allocated memory is still 406.3 MB. Free memory was 362.8 MB in the beginning and 352.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 18:22:38,154 INFO L168 Benchmark]: Boogie Preprocessor took 32.67 ms. Allocated memory is still 406.3 MB. Free memory was 352.2 MB in the beginning and 349.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 18:22:38,154 INFO L168 Benchmark]: RCFGBuilder took 176.76 ms. Allocated memory is still 406.3 MB. Free memory was 349.6 MB in the beginning and 332.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. [2018-02-02 18:22:38,155 INFO L168 Benchmark]: TraceAbstraction took 4903.31 ms. Allocated memory was 406.3 MB in the beginning and 708.3 MB in the end (delta: 302.0 MB). Free memory was 332.4 MB in the beginning and 621.3 MB in the end (delta: -288.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. [2018-02-02 18:22:38,155 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 406.3 MB. Free memory is still 368.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 142.36 ms. Allocated memory is still 406.3 MB. Free memory was 362.8 MB in the beginning and 352.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.67 ms. Allocated memory is still 406.3 MB. Free memory was 352.2 MB in the beginning and 349.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 176.76 ms. Allocated memory is still 406.3 MB. Free memory was 349.6 MB in the beginning and 332.4 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4903.31 ms. Allocated memory was 406.3 MB in the beginning and 708.3 MB in the end (delta: 302.0 MB). Free memory was 332.4 MB in the beginning and 621.3 MB in the end (delta: -288.9 MB). Peak memory consumption was 13.1 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: 548]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 7 error locations. SAFE Result, 4.8s OverallTime, 13 OverallIterations, 3 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 361 SDtfs, 457 SDslu, 1810 SDs, 0 SdLazy, 1594 SolverSat, 144 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=10, 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, 13 MinimizatonAttempts, 36 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 320 ConstructedInterpolants, 16 QuantifiedInterpolants, 60519 SizeOfPredicates, 44 NumberOfNonLiveVariables, 449 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 3/39 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/cstrcpy-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_18-22-38-160.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrcpy-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_18-22-38-160.csv Received shutdown request...