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/cstrlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-03 22:47:34,972 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-03 22:47:34,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-03 22:47:34,986 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-03 22:47:34,986 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-03 22:47:34,987 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-03 22:47:34,987 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-03 22:47:34,989 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-03 22:47:34,991 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-03 22:47:34,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-03 22:47:34,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-03 22:47:34,992 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-03 22:47:34,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-03 22:47:34,994 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-03 22:47:34,995 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-03 22:47:34,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-03 22:47:34,998 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-03 22:47:34,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-03 22:47:35,000 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-03 22:47:35,001 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-03 22:47:35,003 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-03 22:47:35,007 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-03 22:47:35,016 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-03 22:47:35,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-03 22:47:35,016 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-03 22:47:35,017 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-03 22:47:35,017 INFO L133 SettingsManager]: * Use SBE=true [2018-02-03 22:47:35,017 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-03 22:47:35,017 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-03 22:47:35,017 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-03 22:47:35,017 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-03 22:47:35,017 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-03 22:47:35,017 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-03 22:47:35,017 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-03 22:47:35,018 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-03 22:47:35,018 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-03 22:47:35,018 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-03 22:47:35,018 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-03 22:47:35,018 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-03 22:47:35,018 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-03 22:47:35,018 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-03 22:47:35,018 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-03 22:47:35,018 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-03 22:47:35,019 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-03 22:47:35,019 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-03 22:47:35,019 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-03 22:47:35,019 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-03 22:47:35,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-03 22:47:35,052 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-03 22:47:35,055 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-03 22:47:35,056 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-03 22:47:35,056 INFO L276 PluginConnector]: CDTParser initialized [2018-02-03 22:47:35,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-02-03 22:47:35,203 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-03 22:47:35,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-03 22:47:35,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-03 22:47:35,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-03 22:47:35,211 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-03 22:47:35,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb25181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35, skipping insertion in model container [2018-02-03 22:47:35,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,228 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-03 22:47:35,256 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-03 22:47:35,342 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-03 22:47:35,353 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-03 22:47:35,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35 WrapperNode [2018-02-03 22:47:35,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-03 22:47:35,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-03 22:47:35,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-03 22:47:35,358 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-03 22:47:35,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (1/1) ... [2018-02-03 22:47:35,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-03 22:47:35,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-03 22:47:35,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-03 22:47:35,378 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-03 22:47:35,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-03 22:47:35,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-03 22:47:35,417 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-03 22:47:35,417 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-02-03 22:47:35,417 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-03 22:47:35,417 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-03 22:47:35,418 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-03 22:47:35,418 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-03 22:47:35,418 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-03 22:47:35,418 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-03 22:47:35,418 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-03 22:47:35,418 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-02-03 22:47:35,418 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-03 22:47:35,418 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-03 22:47:35,419 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-03 22:47:35,517 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-03 22:47:35,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.02 10:47:35 BoogieIcfgContainer [2018-02-03 22:47:35,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-03 22:47:35,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-03 22:47:35,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-03 22:47:35,520 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-03 22:47:35,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.02 10:47:35" (1/3) ... [2018-02-03 22:47:35,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfd64d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.02 10:47:35, skipping insertion in model container [2018-02-03 22:47:35,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:47:35" (2/3) ... [2018-02-03 22:47:35,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfd64d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.02 10:47:35, skipping insertion in model container [2018-02-03 22:47:35,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.02 10:47:35" (3/3) ... [2018-02-03 22:47:35,522 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-02-03 22:47:35,527 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-03 22:47:35,531 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-02-03 22:47:35,565 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-03 22:47:35,566 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-03 22:47:35,566 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-03 22:47:35,566 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-03 22:47:35,566 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-03 22:47:35,566 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-03 22:47:35,566 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-03 22:47:35,566 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-03 22:47:35,567 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-03 22:47:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-02-03 22:47:35,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-03 22:47:35,581 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:47:35,582 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:47:35,583 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-03 22:47:35,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1072861299, now seen corresponding path program 1 times [2018-02-03 22:47:35,587 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:47:35,587 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:47:35,618 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:35,618 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:47:35,618 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:35,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:47:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:35,712 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:47:35,712 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-03 22:47:35,713 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-03 22:47:35,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-03 22:47:35,722 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-03 22:47:35,723 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2018-02-03 22:47:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:47:35,774 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-02-03 22:47:35,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-03 22:47:35,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-02-03 22:47:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:47:35,782 INFO L225 Difference]: With dead ends: 29 [2018-02-03 22:47:35,782 INFO L226 Difference]: Without dead ends: 26 [2018-02-03 22:47:35,783 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 [2018-02-03 22:47:35,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-02-03 22:47:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-02-03 22:47:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-02-03 22:47:35,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-02-03 22:47:35,854 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 10 [2018-02-03 22:47:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:47:35,855 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-02-03 22:47:35,855 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-03 22:47:35,855 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-02-03 22:47:35,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-02-03 22:47:35,855 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:47:35,855 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:47:35,855 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-03 22:47:35,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1072861300, now seen corresponding path program 1 times [2018-02-03 22:47:35,856 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:47:35,856 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:47:35,857 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:35,857 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:47:35,857 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:35,869 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:47:35,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:35,929 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:47:35,929 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-03 22:47:35,930 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-03 22:47:35,930 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-03 22:47:35,931 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-03 22:47:35,931 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2018-02-03 22:47:35,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:47:35,953 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2018-02-03 22:47:35,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-03 22:47:35,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-02-03 22:47:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:47:35,954 INFO L225 Difference]: With dead ends: 25 [2018-02-03 22:47:35,954 INFO L226 Difference]: Without dead ends: 25 [2018-02-03 22:47:35,955 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 [2018-02-03 22:47:35,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-02-03 22:47:35,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-02-03 22:47:35,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-02-03 22:47:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-02-03 22:47:35,957 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 10 [2018-02-03 22:47:35,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:47:35,957 INFO L432 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-02-03 22:47:35,957 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-03 22:47:35,957 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-02-03 22:47:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-03 22:47:35,958 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:47:35,958 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:47:35,958 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-03 22:47:35,958 INFO L82 PathProgramCache]: Analyzing trace with hash -360318775, now seen corresponding path program 1 times [2018-02-03 22:47:35,958 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:47:35,958 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:47:35,959 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:35,959 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:47:35,959 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:35,966 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:47:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:36,000 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:47:36,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-03 22:47:36,001 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-03 22:47:36,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-03 22:47:36,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-03 22:47:36,002 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 5 states. [2018-02-03 22:47:36,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:47:36,042 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-02-03 22:47:36,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-03 22:47:36,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-03 22:47:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:47:36,044 INFO L225 Difference]: With dead ends: 24 [2018-02-03 22:47:36,044 INFO L226 Difference]: Without dead ends: 24 [2018-02-03 22:47:36,045 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 [2018-02-03 22:47:36,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-02-03 22:47:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-02-03 22:47:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-02-03 22:47:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-02-03 22:47:36,047 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2018-02-03 22:47:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:47:36,048 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-02-03 22:47:36,048 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-03 22:47:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-02-03 22:47:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-03 22:47:36,048 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:47:36,049 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:47:36,049 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-03 22:47:36,049 INFO L82 PathProgramCache]: Analyzing trace with hash -360318774, now seen corresponding path program 1 times [2018-02-03 22:47:36,049 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:47:36,049 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:47:36,050 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:36,050 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:47:36,050 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:36,061 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:47:36,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:36,145 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:47:36,145 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-03 22:47:36,146 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-03 22:47:36,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-03 22:47:36,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-02-03 22:47:36,146 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2018-02-03 22:47:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:47:36,227 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-02-03 22:47:36,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-03 22:47:36,228 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-02-03 22:47:36,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:47:36,230 INFO L225 Difference]: With dead ends: 30 [2018-02-03 22:47:36,230 INFO L226 Difference]: Without dead ends: 30 [2018-02-03 22:47:36,231 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 [2018-02-03 22:47:36,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-03 22:47:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-02-03 22:47:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-02-03 22:47:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-02-03 22:47:36,233 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 14 [2018-02-03 22:47:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:47:36,234 INFO L432 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-02-03 22:47:36,234 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-03 22:47:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-02-03 22:47:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-03 22:47:36,234 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:47:36,234 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:47:36,235 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-03 22:47:36,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1133368501, now seen corresponding path program 1 times [2018-02-03 22:47:36,235 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:47:36,235 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:47:36,236 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:36,236 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:47:36,236 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:36,249 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:47:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:36,349 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:47:36,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-03 22:47:36,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-03 22:47:36,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-03 22:47:36,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-03 22:47:36,350 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2018-02-03 22:47:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:47:36,418 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-02-03 22:47:36,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-03 22:47:36,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2018-02-03 22:47:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:47:36,418 INFO L225 Difference]: With dead ends: 42 [2018-02-03 22:47:36,418 INFO L226 Difference]: Without dead ends: 42 [2018-02-03 22:47:36,419 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-02-03 22:47:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-03 22:47:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2018-02-03 22:47:36,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-03 22:47:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-02-03 22:47:36,422 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 17 [2018-02-03 22:47:36,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:47:36,422 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-02-03 22:47:36,422 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-03 22:47:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-02-03 22:47:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-03 22:47:36,422 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:47:36,422 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:47:36,422 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-03 22:47:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash -432303923, now seen corresponding path program 1 times [2018-02-03 22:47:36,423 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:47:36,423 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:47:36,423 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:36,424 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:47:36,424 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:36,434 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:47:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:36,558 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-03 22:47:36,558 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 [2018-02-03 22:47:36,564 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:47:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:36,585 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-03 22:47:36,625 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 [2018-02-03 22:47:36,628 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 [2018-02-03 22:47:36,628 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:47:36,629 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:47:36,634 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. [2018-02-03 22:47:36,634 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-02-03 22:47:36,703 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 [2018-02-03 22:47:36,709 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 [2018-02-03 22:47:36,709 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-03 22:47:36,712 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:47:36,721 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:47:36,721 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-02-03 22:47:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:36,770 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-03 22:47:36,770 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2018-02-03 22:47:36,771 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-02-03 22:47:36,771 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-02-03 22:47:36,771 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-02-03 22:47:36,771 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 14 states. [2018-02-03 22:47:37,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:47:37,136 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-02-03 22:47:37,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-02-03 22:47:37,137 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2018-02-03 22:47:37,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:47:37,138 INFO L225 Difference]: With dead ends: 47 [2018-02-03 22:47:37,138 INFO L226 Difference]: Without dead ends: 47 [2018-02-03 22:47:37,138 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2018-02-03 22:47:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-02-03 22:47:37,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2018-02-03 22:47:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-03 22:47:37,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-02-03 22:47:37,142 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 17 [2018-02-03 22:47:37,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:47:37,142 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-02-03 22:47:37,142 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-02-03 22:47:37,142 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-02-03 22:47:37,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-03 22:47:37,143 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:47:37,143 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:47:37,143 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-03 22:47:37,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1840705640, now seen corresponding path program 2 times [2018-02-03 22:47:37,143 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:47:37,143 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:47:37,144 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:37,144 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:47:37,144 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:37,154 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:47:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:37,301 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-03 22:47:37,301 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) [2018-02-03 22:47:37,313 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-03 22:47:37,330 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-03 22:47:37,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-03 22:47:37,332 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-03 22:47:37,336 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 [2018-02-03 22:47:37,336 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-03 22:47:37,345 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:47:37,345 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-03 22:47:37,365 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 [2018-02-03 22:47:37,367 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 [2018-02-03 22:47:37,367 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:47:37,368 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:47:37,371 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:47:37,371 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-02-03 22:47:37,442 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 [2018-02-03 22:47:37,447 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 [2018-02-03 22:47:37,448 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-03 22:47:37,450 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:47:37,457 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:47:37,457 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:49 [2018-02-03 22:47:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:37,500 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-03 22:47:37,501 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-02-03 22:47:37,501 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-02-03 22:47:37,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-02-03 22:47:37,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2018-02-03 22:47:37,501 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 17 states. [2018-02-03 22:47:37,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:47:37,871 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-02-03 22:47:37,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-03 22:47:37,871 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2018-02-03 22:47:37,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:47:37,872 INFO L225 Difference]: With dead ends: 46 [2018-02-03 22:47:37,872 INFO L226 Difference]: Without dead ends: 46 [2018-02-03 22:47:37,872 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2018-02-03 22:47:37,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-02-03 22:47:37,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2018-02-03 22:47:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-02-03 22:47:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-02-03 22:47:37,876 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 20 [2018-02-03 22:47:37,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:47:37,877 INFO L432 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-02-03 22:47:37,877 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-02-03 22:47:37,877 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-02-03 22:47:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-03 22:47:37,877 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:47:37,877 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] [2018-02-03 22:47:37,878 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrlenErr1RequiresViolation, cstrlenErr0RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-03 22:47:37,878 INFO L82 PathProgramCache]: Analyzing trace with hash 248709196, now seen corresponding path program 1 times [2018-02-03 22:47:37,878 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:47:37,878 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:47:37,879 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:37,879 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-03 22:47:37,879 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:47:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:47:37,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:47:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:47:37,944 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:47:37,944 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-03 22:47:37,945 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-03 22:47:37,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-03 22:47:37,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-03 22:47:37,945 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 4 states. [2018-02-03 22:47:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:47:37,974 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-02-03 22:47:37,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-03 22:47:37,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-02-03 22:47:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:47:37,975 INFO L225 Difference]: With dead ends: 33 [2018-02-03 22:47:37,975 INFO L226 Difference]: Without dead ends: 0 [2018-02-03 22:47:37,975 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 [2018-02-03 22:47:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-03 22:47:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-03 22:47:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-03 22:47:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-03 22:47:37,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-02-03 22:47:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:47:37,976 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-03 22:47:37,977 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-03 22:47:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-03 22:47:37,977 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-03 22:47:37,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.02 10:47:37 BoogieIcfgContainer [2018-02-03 22:47:37,981 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-03 22:47:37,981 INFO L168 Benchmark]: Toolchain (without parser) took 2777.84 ms. Allocated memory was 404.2 MB in the beginning and 658.0 MB in the end (delta: 253.8 MB). Free memory was 362.4 MB in the beginning and 590.5 MB in the end (delta: -228.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 5.3 GB. [2018-02-03 22:47:37,982 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 404.2 MB. Free memory is still 367.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-03 22:47:37,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.27 ms. Allocated memory is still 404.2 MB. Free memory was 361.1 MB in the beginning and 351.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-02-03 22:47:37,982 INFO L168 Benchmark]: Boogie Preprocessor took 20.03 ms. Allocated memory is still 404.2 MB. Free memory was 351.8 MB in the beginning and 349.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-03 22:47:37,982 INFO L168 Benchmark]: RCFGBuilder took 139.73 ms. Allocated memory is still 404.2 MB. Free memory was 349.2 MB in the beginning and 334.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 5.3 GB. [2018-02-03 22:47:37,983 INFO L168 Benchmark]: TraceAbstraction took 2462.94 ms. Allocated memory was 404.2 MB in the beginning and 658.0 MB in the end (delta: 253.8 MB). Free memory was 334.9 MB in the beginning and 590.5 MB in the end (delta: -255.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-03 22:47:37,984 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 404.2 MB. Free memory is still 367.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 152.27 ms. Allocated memory is still 404.2 MB. Free memory was 361.1 MB in the beginning and 351.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 20.03 ms. Allocated memory is still 404.2 MB. Free memory was 351.8 MB in the beginning and 349.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 139.73 ms. Allocated memory is still 404.2 MB. Free memory was 349.2 MB in the beginning and 334.9 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2462.94 ms. Allocated memory was 404.2 MB in the beginning and 658.0 MB in the end (delta: 253.8 MB). Free memory was 334.9 MB in the beginning and 590.5 MB in the end (delta: -255.6 MB). There was no memory consumed. 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: 547]: 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, 30 locations, 5 error locations. SAFE Result, 2.4s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 153 SDtfs, 234 SDslu, 549 SDs, 0 SdLazy, 546 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 151 ConstructedInterpolants, 10 QuantifiedInterpolants, 17814 SizeOfPredicates, 14 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 4/20 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/cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-03_22-47-37-989.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-03_22-47-37-989.csv Received shutdown request...