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/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 12:07:44,038 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 12:07:44,039 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 12:07:44,048 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 12:07:44,048 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 12:07:44,049 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 12:07:44,050 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 12:07:44,051 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 12:07:44,052 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 12:07:44,053 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 12:07:44,054 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 12:07:44,054 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 12:07:44,055 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 12:07:44,055 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 12:07:44,056 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 12:07:44,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 12:07:44,059 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 12:07:44,061 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 12:07:44,061 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 12:07:44,062 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 12:07:44,064 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 12:07:44,067 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 12:07:44,068 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 12:07:44,068 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 [2018-02-04 12:07:44,077 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 12:07:44,077 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 12:07:44,078 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 12:07:44,079 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 12:07:44,079 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 12:07:44,079 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 12:07:44,079 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 12:07:44,079 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 12:07:44,079 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 12:07:44,080 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 12:07:44,080 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 12:07:44,080 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 12:07:44,080 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 12:07:44,080 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 12:07:44,080 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 12:07:44,080 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 12:07:44,081 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 12:07:44,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 12:07:44,081 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 12:07:44,081 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 12:07:44,081 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 12:07:44,081 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-04 12:07:44,082 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-04 12:07:44,082 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-04 12:07:44,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 12:07:44,125 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 12:07:44,128 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 12:07:44,129 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 12:07:44,129 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 12:07:44,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-02-04 12:07:44,264 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 12:07:44,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 12:07:44,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 12:07:44,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 12:07:44,271 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 12:07:44,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1bdbed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44, skipping insertion in model container [2018-02-04 12:07:44,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,287 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 12:07:44,314 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 12:07:44,395 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 12:07:44,405 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 12:07:44,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44 WrapperNode [2018-02-04 12:07:44,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 12:07:44,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 12:07:44,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 12:07:44,409 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 12:07:44,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (1/1) ... [2018-02-04 12:07:44,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 12:07:44,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 12:07:44,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 12:07:44,431 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 12:07:44,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 12:07:44,462 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 12:07:44,462 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 12:07:44,463 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-02-04 12:07:44,463 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 12:07:44,463 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 12:07:44,463 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 12:07:44,463 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 12:07:44,463 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 12:07:44,463 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 12:07:44,464 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 12:07:44,464 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-02-04 12:07:44,464 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 12:07:44,464 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 12:07:44,464 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 12:07:44,563 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 12:07:44,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:07:44 BoogieIcfgContainer [2018-02-04 12:07:44,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 12:07:44,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 12:07:44,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 12:07:44,566 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 12:07:44,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 12:07:44" (1/3) ... [2018-02-04 12:07:44,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de8a8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:07:44, skipping insertion in model container [2018-02-04 12:07:44,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:07:44" (2/3) ... [2018-02-04 12:07:44,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de8a8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:07:44, skipping insertion in model container [2018-02-04 12:07:44,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:07:44" (3/3) ... [2018-02-04 12:07:44,568 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-02-04 12:07:44,573 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-04 12:07:44,577 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-02-04 12:07:44,611 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 12:07:44,611 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 12:07:44,612 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-04 12:07:44,612 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-04 12:07:44,612 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 12:07:44,612 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 12:07:44,612 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 12:07:44,612 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 12:07:44,612 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 12:07:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-02-04 12:07:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-04 12:07:44,628 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:07:44,629 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:07:44,629 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 12:07:44,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1793434931, now seen corresponding path program 1 times [2018-02-04 12:07:44,633 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:07:44,634 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:07:44,665 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:44,665 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:44,665 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:44,701 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:07:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:44,764 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 12:07:44,764 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 12:07:44,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 12:07:44,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 12:07:44,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 12:07:44,778 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2018-02-04 12:07:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:07:44,842 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-02-04 12:07:44,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 12:07:44,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-02-04 12:07:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:07:44,848 INFO L225 Difference]: With dead ends: 30 [2018-02-04 12:07:44,848 INFO L226 Difference]: Without dead ends: 27 [2018-02-04 12:07:44,849 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 12:07:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-02-04 12:07:44,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-02-04 12:07:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 12:07:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-04 12:07:44,915 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 10 [2018-02-04 12:07:44,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:07:44,915 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-04 12:07:44,915 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 12:07:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-04 12:07:44,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-04 12:07:44,916 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:07:44,916 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:07:44,916 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 12:07:44,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1793434932, now seen corresponding path program 1 times [2018-02-04 12:07:44,916 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:07:44,916 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:07:44,917 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:44,917 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:44,917 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:44,929 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:07:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:44,991 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 12:07:44,991 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 12:07:44,993 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 12:07:44,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 12:07:44,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 12:07:44,994 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 5 states. [2018-02-04 12:07:45,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:07:45,032 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-02-04 12:07:45,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 12:07:45,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-02-04 12:07:45,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:07:45,033 INFO L225 Difference]: With dead ends: 26 [2018-02-04 12:07:45,033 INFO L226 Difference]: Without dead ends: 26 [2018-02-04 12:07:45,034 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 [2018-02-04 12:07:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-04 12:07:45,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-02-04 12:07:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-02-04 12:07:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-02-04 12:07:45,037 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 10 [2018-02-04 12:07:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:07:45,037 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-02-04 12:07:45,037 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 12:07:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-02-04 12:07:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 12:07:45,038 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:07:45,038 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:07:45,038 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 12:07:45,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2006900249, now seen corresponding path program 1 times [2018-02-04 12:07:45,039 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:07:45,039 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:07:45,040 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:45,040 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:45,040 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:45,051 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:07:45,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:45,084 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 12:07:45,084 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 12:07:45,084 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 12:07:45,085 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 12:07:45,085 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 12:07:45,085 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2018-02-04 12:07:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:07:45,124 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-02-04 12:07:45,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 12:07:45,125 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-04 12:07:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:07:45,125 INFO L225 Difference]: With dead ends: 25 [2018-02-04 12:07:45,125 INFO L226 Difference]: Without dead ends: 25 [2018-02-04 12:07:45,126 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-04 12:07:45,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-02-04 12:07:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-02-04 12:07:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-02-04 12:07:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-02-04 12:07:45,128 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 14 [2018-02-04 12:07:45,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:07:45,128 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-02-04 12:07:45,128 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 12:07:45,128 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-02-04 12:07:45,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-04 12:07:45,128 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:07:45,128 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:07:45,128 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 12:07:45,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2006900248, now seen corresponding path program 1 times [2018-02-04 12:07:45,129 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:07:45,129 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:07:45,129 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:45,129 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:45,129 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:45,137 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:07:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:45,206 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 12:07:45,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 12:07:45,206 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 12:07:45,206 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 12:07:45,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-02-04 12:07:45,207 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 8 states. [2018-02-04 12:07:45,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:07:45,282 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-02-04 12:07:45,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 12:07:45,284 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-02-04 12:07:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:07:45,286 INFO L225 Difference]: With dead ends: 32 [2018-02-04 12:07:45,286 INFO L226 Difference]: Without dead ends: 32 [2018-02-04 12:07:45,289 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-02-04 12:07:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-04 12:07:45,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2018-02-04 12:07:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 12:07:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-04 12:07:45,292 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14 [2018-02-04 12:07:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:07:45,293 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-04 12:07:45,293 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 12:07:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-04 12:07:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 12:07:45,293 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:07:45,294 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:07:45,294 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 12:07:45,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1301829867, now seen corresponding path program 1 times [2018-02-04 12:07:45,294 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:07:45,294 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:07:45,295 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:45,295 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:45,295 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:45,307 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:07:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:45,408 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 12:07:45,408 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-04 12:07:45,408 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 12:07:45,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 12:07:45,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-04 12:07:45,409 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2018-02-04 12:07:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:07:45,506 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-02-04 12:07:45,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 12:07:45,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-02-04 12:07:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:07:45,507 INFO L225 Difference]: With dead ends: 43 [2018-02-04 12:07:45,507 INFO L226 Difference]: Without dead ends: 43 [2018-02-04 12:07:45,508 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-02-04 12:07:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-02-04 12:07:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2018-02-04 12:07:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-04 12:07:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-02-04 12:07:45,513 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 18 [2018-02-04 12:07:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:07:45,514 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-02-04 12:07:45,514 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 12:07:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-02-04 12:07:45,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 12:07:45,519 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:07:45,519 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:07:45,519 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 12:07:45,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1559995305, now seen corresponding path program 1 times [2018-02-04 12:07:45,519 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:07:45,520 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:07:45,520 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:45,520 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:45,521 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:45,536 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:07:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:45,722 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:07:45,723 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 [2018-02-04 12:07:45,736 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:45,767 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:07:45,799 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 [2018-02-04 12:07:45,801 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 [2018-02-04 12:07:45,801 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-04 12:07:45,803 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 12:07:45,807 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. [2018-02-04 12:07:45,807 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-02-04 12:07:45,910 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 18 treesize of output 14 [2018-02-04 12:07:45,933 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 14 treesize of output 11 [2018-02-04 12:07:45,934 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-04 12:07:45,937 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-04 12:07:45,958 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-04 12:07:45,958 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-02-04 12:07:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:46,088 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:07:46,088 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2018-02-04 12:07:46,088 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-02-04 12:07:46,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-02-04 12:07:46,089 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-02-04 12:07:46,089 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 16 states. [2018-02-04 12:07:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:07:46,871 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2018-02-04 12:07:46,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 12:07:46,871 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-02-04 12:07:46,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:07:46,871 INFO L225 Difference]: With dead ends: 50 [2018-02-04 12:07:46,871 INFO L226 Difference]: Without dead ends: 50 [2018-02-04 12:07:46,872 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2018-02-04 12:07:46,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-04 12:07:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2018-02-04 12:07:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-02-04 12:07:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2018-02-04 12:07:46,874 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 18 [2018-02-04 12:07:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:07:46,875 INFO L432 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2018-02-04 12:07:46,875 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-02-04 12:07:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2018-02-04 12:07:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 12:07:46,875 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:07:46,875 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] [2018-02-04 12:07:46,875 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 12:07:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash -968711636, now seen corresponding path program 1 times [2018-02-04 12:07:46,875 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:07:46,876 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:07:46,876 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:46,876 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:46,876 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:46,898 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:07:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:46,930 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 12:07:46,930 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 12:07:46,930 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 12:07:46,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 12:07:46,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 12:07:46,931 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 4 states. [2018-02-04 12:07:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:07:46,950 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-02-04 12:07:46,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 12:07:46,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-02-04 12:07:46,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:07:46,951 INFO L225 Difference]: With dead ends: 41 [2018-02-04 12:07:46,951 INFO L226 Difference]: Without dead ends: 23 [2018-02-04 12:07:46,951 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 12:07:46,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-02-04 12:07:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-02-04 12:07:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-02-04 12:07:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-02-04 12:07:46,952 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2018-02-04 12:07:46,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:07:46,952 INFO L432 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-02-04 12:07:46,952 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 12:07:46,953 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-02-04 12:07:46,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 12:07:46,953 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 12:07:46,953 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 12:07:46,953 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 12:07:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1772753452, now seen corresponding path program 2 times [2018-02-04 12:07:46,953 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-04 12:07:46,953 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-04 12:07:46,954 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:46,954 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-04 12:07:46,954 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-04 12:07:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 12:07:46,961 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 12:07:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:47,162 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-04 12:07:47,162 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 [2018-02-04 12:07:47,167 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-04 12:07:47,178 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-04 12:07:47,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-04 12:07:47,180 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-04 12:07:47,182 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 [2018-02-04 12:07:47,183 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-04 12:07:47,185 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 12:07:47,185 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-04 12:07:47,203 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 16 treesize of output 13 [2018-02-04 12:07:47,205 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 [2018-02-04 12:07:47,205 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-04 12:07:47,206 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-04 12:07:47,208 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-02-04 12:07:47,208 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-02-04 12:07:47,275 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 [2018-02-04 12:07:47,280 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 [2018-02-04 12:07:47,280 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-04 12:07:47,282 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-04 12:07:47,289 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-04 12:07:47,289 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:49 [2018-02-04 12:07:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 12:07:47,350 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-04 12:07:47,350 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-02-04 12:07:47,351 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-02-04 12:07:47,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-02-04 12:07:47,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2018-02-04 12:07:47,351 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 18 states. [2018-02-04 12:07:47,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 12:07:47,708 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-02-04 12:07:47,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-04 12:07:47,708 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2018-02-04 12:07:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 12:07:47,708 INFO L225 Difference]: With dead ends: 24 [2018-02-04 12:07:47,708 INFO L226 Difference]: Without dead ends: 0 [2018-02-04 12:07:47,709 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2018-02-04 12:07:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-04 12:07:47,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-04 12:07:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-04 12:07:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-04 12:07:47,709 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-02-04 12:07:47,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 12:07:47,709 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-04 12:07:47,710 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-02-04 12:07:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-04 12:07:47,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-04 12:07:47,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 12:07:47 BoogieIcfgContainer [2018-02-04 12:07:47,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 12:07:47,714 INFO L168 Benchmark]: Toolchain (without parser) took 3449.93 ms. Allocated memory was 407.9 MB in the beginning and 662.2 MB in the end (delta: 254.3 MB). Free memory was 364.6 MB in the beginning and 559.5 MB in the end (delta: -195.0 MB). Peak memory consumption was 59.3 MB. Max. memory is 5.3 GB. [2018-02-04 12:07:47,715 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 407.9 MB. Free memory is still 369.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 12:07:47,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.46 ms. Allocated memory is still 407.9 MB. Free memory was 364.6 MB in the beginning and 354.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 12:07:47,716 INFO L168 Benchmark]: Boogie Preprocessor took 21.28 ms. Allocated memory is still 407.9 MB. Free memory was 354.0 MB in the beginning and 351.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 12:07:47,716 INFO L168 Benchmark]: RCFGBuilder took 132.93 ms. Allocated memory is still 407.9 MB. Free memory was 351.4 MB in the beginning and 336.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. [2018-02-04 12:07:47,716 INFO L168 Benchmark]: TraceAbstraction took 3149.43 ms. Allocated memory was 407.9 MB in the beginning and 662.2 MB in the end (delta: 254.3 MB). Free memory was 336.8 MB in the beginning and 559.5 MB in the end (delta: -222.7 MB). Peak memory consumption was 31.6 MB. Max. memory is 5.3 GB. [2018-02-04 12:07:47,717 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 407.9 MB. Free memory is still 369.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 143.46 ms. Allocated memory is still 407.9 MB. Free memory was 364.6 MB in the beginning and 354.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 21.28 ms. Allocated memory is still 407.9 MB. Free memory was 354.0 MB in the beginning and 351.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 132.93 ms. Allocated memory is still 407.9 MB. Free memory was 351.4 MB in the beginning and 336.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3149.43 ms. Allocated memory was 407.9 MB in the beginning and 662.2 MB in the end (delta: 254.3 MB). Free memory was 336.8 MB in the beginning and 559.5 MB in the end (delta: -222.7 MB). Peak memory consumption was 31.6 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: 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 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 5 error locations. SAFE Result, 3.1s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 154 SDtfs, 201 SDslu, 515 SDs, 0 SdLazy, 484 SolverSat, 74 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 158 ConstructedInterpolants, 11 QuantifiedInterpolants, 20892 SizeOfPredicates, 14 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 4/22 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/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_12-07-47-723.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_12-07-47-723.csv Received shutdown request...