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_cstrcspn-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-03 22:51:15,310 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-03 22:51:15,311 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-03 22:51:15,324 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-03 22:51:15,324 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-03 22:51:15,324 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-03 22:51:15,325 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-03 22:51:15,327 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-03 22:51:15,329 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-03 22:51:15,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-03 22:51:15,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-03 22:51:15,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-03 22:51:15,331 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-03 22:51:15,332 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-03 22:51:15,333 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-03 22:51:15,335 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-03 22:51:15,336 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-03 22:51:15,338 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-03 22:51:15,339 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-03 22:51:15,340 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-03 22:51:15,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-03 22:51:15,342 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-03 22:51:15,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-03 22:51:15,343 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-03 22:51:15,344 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-03 22:51:15,345 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-03 22:51:15,345 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-03 22:51:15,346 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-03 22:51:15,346 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-03 22:51:15,346 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-03 22:51:15,346 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-03 22:51:15,346 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 22:51:15,355 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-03 22:51:15,355 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-03 22:51:15,356 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-03 22:51:15,357 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-03 22:51:15,357 INFO L133 SettingsManager]: * Use SBE=true [2018-02-03 22:51:15,357 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-03 22:51:15,357 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-03 22:51:15,357 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-03 22:51:15,357 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-03 22:51:15,358 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-03 22:51:15,358 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-03 22:51:15,358 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-03 22:51:15,358 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-03 22:51:15,358 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-03 22:51:15,358 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-03 22:51:15,358 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-03 22:51:15,359 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-03 22:51:15,359 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-03 22:51:15,359 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-03 22:51:15,359 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-03 22:51:15,359 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-03 22:51:15,359 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-03 22:51:15,360 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-03 22:51:15,360 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-03 22:51:15,360 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-03 22:51:15,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-03 22:51:15,396 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-03 22:51:15,398 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-03 22:51:15,399 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-03 22:51:15,400 INFO L276 PluginConnector]: CDTParser initialized [2018-02-03 22:51:15,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-02-03 22:51:15,527 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-03 22:51:15,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-03 22:51:15,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-03 22:51:15,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-03 22:51:15,535 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-03 22:51:15,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dfe84f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15, skipping insertion in model container [2018-02-03 22:51:15,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,549 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-03 22:51:15,576 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-03 22:51:15,669 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-03 22:51:15,683 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-03 22:51:15,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15 WrapperNode [2018-02-03 22:51:15,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-03 22:51:15,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-03 22:51:15,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-03 22:51:15,691 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-03 22:51:15,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (1/1) ... [2018-02-03 22:51:15,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-03 22:51:15,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-03 22:51:15,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-03 22:51:15,718 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-03 22:51:15,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (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 22:51:15,755 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-03 22:51:15,755 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-03 22:51:15,755 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcspn [2018-02-03 22:51:15,755 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-03 22:51:15,755 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcspn [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-03 22:51:15,756 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-03 22:51:15,894 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-03 22:51:15,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.02 10:51:15 BoogieIcfgContainer [2018-02-03 22:51:15,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-03 22:51:15,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-03 22:51:15,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-03 22:51:15,897 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-03 22:51:15,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.02 10:51:15" (1/3) ... [2018-02-03 22:51:15,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3663dd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.02 10:51:15, skipping insertion in model container [2018-02-03 22:51:15,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.02 10:51:15" (2/3) ... [2018-02-03 22:51:15,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3663dd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.02 10:51:15, skipping insertion in model container [2018-02-03 22:51:15,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.02 10:51:15" (3/3) ... [2018-02-03 22:51:15,898 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-02-03 22:51:15,903 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-03 22:51:15,907 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-02-03 22:51:15,937 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-03 22:51:15,938 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-03 22:51:15,938 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-03 22:51:15,938 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-03 22:51:15,938 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-03 22:51:15,938 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-03 22:51:15,938 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-03 22:51:15,938 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-03 22:51:15,939 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-03 22:51:15,950 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-02-03 22:51:15,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-03 22:51:15,958 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:15,959 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:15,959 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash -839073384, now seen corresponding path program 1 times [2018-02-03 22:51:15,964 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:15,965 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:16,006 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,006 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:16,006 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:16,057 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:16,147 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 22:51:16,149 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:16,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-03 22:51:16,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-03 22:51:16,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-03 22:51:16,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-03 22:51:16,166 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2018-02-03 22:51:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:16,288 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-02-03 22:51:16,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-03 22:51:16,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-03 22:51:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:16,297 INFO L225 Difference]: With dead ends: 44 [2018-02-03 22:51:16,297 INFO L226 Difference]: Without dead ends: 41 [2018-02-03 22:51:16,299 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 22:51:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-03 22:51:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-02-03 22:51:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-03 22:51:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-02-03 22:51:16,326 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 13 [2018-02-03 22:51:16,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:16,326 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-02-03 22:51:16,326 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-03 22:51:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-02-03 22:51:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-03 22:51:16,326 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:16,326 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:16,327 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash -839073383, now seen corresponding path program 1 times [2018-02-03 22:51:16,327 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:16,327 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:16,328 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,328 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:16,328 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:16,343 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:16,436 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 22:51:16,436 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:16,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-03 22:51:16,437 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-03 22:51:16,438 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-03 22:51:16,438 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-02-03 22:51:16,438 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2018-02-03 22:51:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:16,506 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-02-03 22:51:16,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-03 22:51:16,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-02-03 22:51:16,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:16,508 INFO L225 Difference]: With dead ends: 40 [2018-02-03 22:51:16,508 INFO L226 Difference]: Without dead ends: 40 [2018-02-03 22:51:16,509 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-02-03 22:51:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-03 22:51:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-02-03 22:51:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-03 22:51:16,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-02-03 22:51:16,512 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 13 [2018-02-03 22:51:16,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:16,513 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-02-03 22:51:16,513 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-03 22:51:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-02-03 22:51:16,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-03 22:51:16,513 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:16,513 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:16,513 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:16,514 INFO L82 PathProgramCache]: Analyzing trace with hash -241471094, now seen corresponding path program 1 times [2018-02-03 22:51:16,514 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:16,514 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:16,516 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,516 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:16,516 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:16,525 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:16,544 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 22:51:16,544 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:16,544 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-03 22:51:16,545 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-03 22:51:16,545 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-03 22:51:16,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-03 22:51:16,545 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 4 states. [2018-02-03 22:51:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:16,579 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2018-02-03 22:51:16,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-03 22:51:16,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-03 22:51:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:16,580 INFO L225 Difference]: With dead ends: 39 [2018-02-03 22:51:16,580 INFO L226 Difference]: Without dead ends: 39 [2018-02-03 22:51:16,580 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 22:51:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-02-03 22:51:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-02-03 22:51:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-03 22:51:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-02-03 22:51:16,582 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 14 [2018-02-03 22:51:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:16,582 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-02-03 22:51:16,582 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-03 22:51:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-02-03 22:51:16,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-03 22:51:16,583 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:16,583 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:16,583 INFO L371 AbstractCegarLoop]: === Iteration 4 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:16,583 INFO L82 PathProgramCache]: Analyzing trace with hash -241471093, now seen corresponding path program 1 times [2018-02-03 22:51:16,583 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:16,583 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:16,584 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,584 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:16,584 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:16,592 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:16,636 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 22:51:16,636 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:16,636 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-03 22:51:16,636 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-03 22:51:16,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-03 22:51:16,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-03 22:51:16,637 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 5 states. [2018-02-03 22:51:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:16,670 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-02-03 22:51:16,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-03 22:51:16,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-03 22:51:16,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:16,671 INFO L225 Difference]: With dead ends: 38 [2018-02-03 22:51:16,671 INFO L226 Difference]: Without dead ends: 38 [2018-02-03 22:51:16,672 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 22:51:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-03 22:51:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-02-03 22:51:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-03 22:51:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-02-03 22:51:16,675 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 14 [2018-02-03 22:51:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:16,676 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-02-03 22:51:16,676 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-03 22:51:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-02-03 22:51:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-03 22:51:16,676 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:16,676 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:16,677 INFO L371 AbstractCegarLoop]: === Iteration 5 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1727701620, now seen corresponding path program 1 times [2018-02-03 22:51:16,677 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:16,677 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:16,678 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,678 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:16,678 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:16,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:16,728 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 22:51:16,728 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:16,728 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-03 22:51:16,729 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-03 22:51:16,729 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-03 22:51:16,729 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-03 22:51:16,729 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-02-03 22:51:16,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:16,768 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-02-03 22:51:16,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-03 22:51:16,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-02-03 22:51:16,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:16,768 INFO L225 Difference]: With dead ends: 37 [2018-02-03 22:51:16,768 INFO L226 Difference]: Without dead ends: 37 [2018-02-03 22:51:16,769 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-02-03 22:51:16,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-02-03 22:51:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-02-03 22:51:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-03 22:51:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-02-03 22:51:16,771 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 19 [2018-02-03 22:51:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:16,771 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-02-03 22:51:16,771 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-03 22:51:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-02-03 22:51:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-02-03 22:51:16,771 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:16,772 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:16,772 INFO L371 AbstractCegarLoop]: === Iteration 6 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:16,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1727701619, now seen corresponding path program 1 times [2018-02-03 22:51:16,772 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:16,772 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:16,772 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,772 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:16,773 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:16,783 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:16,861 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 22:51:16,862 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:16,862 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-03 22:51:16,862 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-03 22:51:16,862 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-03 22:51:16,862 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-03 22:51:16,862 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 9 states. [2018-02-03 22:51:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:16,951 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2018-02-03 22:51:16,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-03 22:51:16,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-02-03 22:51:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:16,952 INFO L225 Difference]: With dead ends: 41 [2018-02-03 22:51:16,952 INFO L226 Difference]: Without dead ends: 41 [2018-02-03 22:51:16,953 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-02-03 22:51:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-02-03 22:51:16,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-02-03 22:51:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-03 22:51:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-02-03 22:51:16,955 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 19 [2018-02-03 22:51:16,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:16,955 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-02-03 22:51:16,955 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-03 22:51:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-02-03 22:51:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-03 22:51:16,955 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:16,956 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 22:51:16,956 INFO L371 AbstractCegarLoop]: === Iteration 7 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:16,956 INFO L82 PathProgramCache]: Analyzing trace with hash 929099078, now seen corresponding path program 1 times [2018-02-03 22:51:16,956 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:16,956 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:16,956 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,957 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:16,957 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:16,964 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:51:16,991 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:16,992 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-03 22:51:16,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-03 22:51:16,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-03 22:51:16,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-03 22:51:16,992 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 7 states. [2018-02-03 22:51:17,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:17,075 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-02-03 22:51:17,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-03 22:51:17,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-02-03 22:51:17,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:17,075 INFO L225 Difference]: With dead ends: 40 [2018-02-03 22:51:17,076 INFO L226 Difference]: Without dead ends: 40 [2018-02-03 22:51:17,076 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-02-03 22:51:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-03 22:51:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-02-03 22:51:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-03 22:51:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-02-03 22:51:17,079 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 22 [2018-02-03 22:51:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:17,079 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-02-03 22:51:17,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-03 22:51:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-02-03 22:51:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-03 22:51:17,080 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:17,080 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 22:51:17,080 INFO L371 AbstractCegarLoop]: === Iteration 8 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash 929099079, now seen corresponding path program 1 times [2018-02-03 22:51:17,081 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:17,081 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:17,081 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:17,082 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:17,082 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:17,090 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:17,157 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 22:51:17,157 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:17,157 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-03 22:51:17,158 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-02-03 22:51:17,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-02-03 22:51:17,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-02-03 22:51:17,158 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 10 states. [2018-02-03 22:51:17,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:17,236 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-02-03 22:51:17,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-03 22:51:17,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-02-03 22:51:17,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:17,236 INFO L225 Difference]: With dead ends: 43 [2018-02-03 22:51:17,236 INFO L226 Difference]: Without dead ends: 43 [2018-02-03 22:51:17,237 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-02-03 22:51:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-02-03 22:51:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-02-03 22:51:17,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-03 22:51:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-02-03 22:51:17,239 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 22 [2018-02-03 22:51:17,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:17,240 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-02-03 22:51:17,240 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-02-03 22:51:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-02-03 22:51:17,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-03 22:51:17,240 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:17,240 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:17,241 INFO L371 AbstractCegarLoop]: === Iteration 9 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:17,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1211791035, now seen corresponding path program 1 times [2018-02-03 22:51:17,241 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:17,241 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:17,241 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:17,241 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:17,242 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:17,252 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:17,369 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 22:51:17,369 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:17,369 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-02-03 22:51:17,370 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-03 22:51:17,370 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-03 22:51:17,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-02-03 22:51:17,370 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 12 states. [2018-02-03 22:51:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:17,570 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2018-02-03 22:51:17,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-02-03 22:51:17,570 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-02-03 22:51:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:17,570 INFO L225 Difference]: With dead ends: 79 [2018-02-03 22:51:17,571 INFO L226 Difference]: Without dead ends: 79 [2018-02-03 22:51:17,571 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2018-02-03 22:51:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-02-03 22:51:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 63. [2018-02-03 22:51:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-02-03 22:51:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2018-02-03 22:51:17,574 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 27 [2018-02-03 22:51:17,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:17,574 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2018-02-03 22:51:17,574 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-03 22:51:17,574 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2018-02-03 22:51:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-03 22:51:17,574 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:17,574 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:17,574 INFO L371 AbstractCegarLoop]: === Iteration 10 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:17,575 INFO L82 PathProgramCache]: Analyzing trace with hash 394142585, now seen corresponding path program 1 times [2018-02-03 22:51:17,575 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:17,575 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:17,575 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:17,575 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:17,575 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:17,587 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:17,745 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 22:51:17,745 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-03 22:51:17,746 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 22:51:17,750 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:17,776 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-03 22:51:17,804 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 22:51:17,806 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 22:51:17,806 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:17,808 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:17,812 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 22:51:17,812 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-02-03 22:51:17,936 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 22:51:17,941 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 22:51:17,941 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-03 22:51:17,943 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:51:17,951 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 22:51:17,951 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:29 [2018-02-03 22:51:18,007 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 22:51:18,031 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-03 22:51:18,032 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 20 [2018-02-03 22:51:18,032 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-02-03 22:51:18,032 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-02-03 22:51:18,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2018-02-03 22:51:18,032 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 21 states. [2018-02-03 22:51:19,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:19,356 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2018-02-03 22:51:19,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-02-03 22:51:19,356 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 27 [2018-02-03 22:51:19,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:19,358 INFO L225 Difference]: With dead ends: 78 [2018-02-03 22:51:19,358 INFO L226 Difference]: Without dead ends: 78 [2018-02-03 22:51:19,358 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2018-02-03 22:51:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-02-03 22:51:19,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2018-02-03 22:51:19,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-02-03 22:51:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2018-02-03 22:51:19,363 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 27 [2018-02-03 22:51:19,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:19,363 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2018-02-03 22:51:19,363 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-02-03 22:51:19,363 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2018-02-03 22:51:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-02-03 22:51:19,364 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:19,364 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:19,366 INFO L371 AbstractCegarLoop]: === Iteration 11 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:19,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1089255981, now seen corresponding path program 1 times [2018-02-03 22:51:19,366 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:19,366 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:19,367 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:19,367 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:19,367 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:19,378 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:51:19,635 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-03 22:51:19,635 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 [2018-02-03 22:51:19,645 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:19,662 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-03 22:51:19,666 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 22:51:19,666 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,668 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,668 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-02-03 22:51:19,691 INFO L700 Elim1Store]: detected not equals via solver [2018-02-03 22:51:19,692 INFO L700 Elim1Store]: detected not equals via solver [2018-02-03 22:51:19,694 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-03 22:51:19,695 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,698 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,698 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2018-02-03 22:51:19,727 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-02-03 22:51:19,728 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 22:51:19,728 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,730 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,733 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 22:51:19,734 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2018-02-03 22:51:19,755 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 26 [2018-02-03 22:51:19,756 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 22:51:19,756 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,759 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,764 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-02-03 22:51:19,764 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:39, output treesize:35 [2018-02-03 22:51:19,884 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2018-02-03 22:51:19,887 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2018-02-03 22:51:19,887 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:19,897 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 22:51:19,897 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-02-03 22:51:19,900 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:51:19,909 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:51:19,909 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:52, output treesize:29 [2018-02-03 22:51:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:51:19,998 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-03 22:51:19,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 27 [2018-02-03 22:51:19,998 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-02-03 22:51:19,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-02-03 22:51:19,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2018-02-03 22:51:19,999 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 28 states. [2018-02-03 22:51:20,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:20,700 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2018-02-03 22:51:20,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-02-03 22:51:20,700 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-02-03 22:51:20,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:20,701 INFO L225 Difference]: With dead ends: 100 [2018-02-03 22:51:20,701 INFO L226 Difference]: Without dead ends: 100 [2018-02-03 22:51:20,702 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1660, Unknown=0, NotChecked=0, Total=1892 [2018-02-03 22:51:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-02-03 22:51:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2018-02-03 22:51:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-02-03 22:51:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2018-02-03 22:51:20,707 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 28 [2018-02-03 22:51:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:20,707 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2018-02-03 22:51:20,707 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-02-03 22:51:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2018-02-03 22:51:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-03 22:51:20,708 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:20,708 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:20,708 INFO L371 AbstractCegarLoop]: === Iteration 12 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:20,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1759144044, now seen corresponding path program 1 times [2018-02-03 22:51:20,709 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:20,709 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:20,709 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:20,709 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:20,710 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:20,723 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:20,781 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 22:51:20,781 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-03 22:51:20,781 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-03 22:51:20,781 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-03 22:51:20,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-03 22:51:20,781 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-03 22:51:20,781 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand 6 states. [2018-02-03 22:51:20,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:20,865 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2018-02-03 22:51:20,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-03 22:51:20,865 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-02-03 22:51:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:20,866 INFO L225 Difference]: With dead ends: 92 [2018-02-03 22:51:20,866 INFO L226 Difference]: Without dead ends: 82 [2018-02-03 22:51:20,866 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-03 22:51:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-02-03 22:51:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-02-03 22:51:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-02-03 22:51:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2018-02-03 22:51:20,870 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 32 [2018-02-03 22:51:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:20,870 INFO L432 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2018-02-03 22:51:20,870 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-03 22:51:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2018-02-03 22:51:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-03 22:51:20,871 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:20,871 INFO L351 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:20,871 INFO L371 AbstractCegarLoop]: === Iteration 13 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:20,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1832996809, now seen corresponding path program 2 times [2018-02-03 22:51:20,871 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:20,872 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:20,872 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:20,872 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-03 22:51:20,872 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:20,881 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:51:21,143 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-03 22:51:21,196 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-03 22:51:21,201 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-03 22:51:21,217 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-03 22:51:21,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-03 22:51:21,219 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-03 22:51:21,237 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 22:51:21,238 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 22:51:21,238 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:21,239 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:21,242 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 22:51:21,242 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-02-03 22:51:21,569 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 30 treesize of output 24 [2018-02-03 22:51:21,572 INFO L700 Elim1Store]: detected not equals via solver [2018-02-03 22:51:21,577 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 35 [2018-02-03 22:51:21,578 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-02-03 22:51:21,584 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:51:21,597 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 22:51:21,597 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:48, output treesize:43 [2018-02-03 22:51:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:51:21,684 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-03 22:51:21,684 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2018-02-03 22:51:21,684 INFO L409 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-02-03 22:51:21,684 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-02-03 22:51:21,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2018-02-03 22:51:21,685 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 27 states. [2018-02-03 22:51:22,361 WARN L146 SmtUtils]: Spent 115ms on a formula simplification. DAG size of input: 89 DAG size of output 76 [2018-02-03 22:51:22,539 WARN L146 SmtUtils]: Spent 111ms on a formula simplification. DAG size of input: 71 DAG size of output 71 [2018-02-03 22:51:22,716 WARN L146 SmtUtils]: Spent 101ms on a formula simplification. DAG size of input: 77 DAG size of output 74 [2018-02-03 22:51:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:23,924 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2018-02-03 22:51:23,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-02-03 22:51:23,924 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 32 [2018-02-03 22:51:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:23,924 INFO L225 Difference]: With dead ends: 93 [2018-02-03 22:51:23,924 INFO L226 Difference]: Without dead ends: 93 [2018-02-03 22:51:23,925 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=297, Invalid=1865, Unknown=0, NotChecked=0, Total=2162 [2018-02-03 22:51:23,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-02-03 22:51:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 67. [2018-02-03 22:51:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-02-03 22:51:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2018-02-03 22:51:23,928 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 32 [2018-02-03 22:51:23,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:23,928 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2018-02-03 22:51:23,928 INFO L433 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-02-03 22:51:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2018-02-03 22:51:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-02-03 22:51:23,929 INFO L343 BasicCegarLoop]: Found error trace [2018-02-03 22:51:23,929 INFO L351 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-03 22:51:23,929 INFO L371 AbstractCegarLoop]: === Iteration 14 === [cstrcspnErr0RequiresViolation, cstrcspnErr1RequiresViolation, cstrcspnErr3RequiresViolation, cstrcspnErr2RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-03 22:51:23,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1916750925, now seen corresponding path program 2 times [2018-02-03 22:51:23,929 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-03 22:51:23,929 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-03 22:51:23,930 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:23,930 INFO L107 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-02-03 22:51:23,930 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-03 22:51:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-03 22:51:23,940 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-03 22:51:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:51:24,240 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-03 22:51:24,240 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-03 22:51:24,256 INFO L109 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-02-03 22:51:24,271 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-02-03 22:51:24,271 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-02-03 22:51:24,274 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-03 22:51:24,277 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 22:51:24,277 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,282 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 22:51:24,282 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,285 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,285 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-02-03 22:51:24,338 INFO L700 Elim1Store]: detected not equals via solver [2018-02-03 22:51:24,338 INFO L700 Elim1Store]: detected not equals via solver [2018-02-03 22:51:24,339 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-02-03 22:51:24,339 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,344 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-02-03 22:51:24,345 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,348 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,348 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-02-03 22:51:24,383 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-02-03 22:51:24,385 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 22:51:24,385 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,386 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,391 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 22:51:24,391 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:28 [2018-02-03 22:51:24,416 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 30 [2018-02-03 22:51:24,417 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 22:51:24,417 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,421 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,425 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2018-02-03 22:51:24,426 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:35 [2018-02-03 22:51:24,687 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2018-02-03 22:51:24,689 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 10 treesize of output 1 [2018-02-03 22:51:24,689 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-02-03 22:51:24,696 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2018-02-03 22:51:24,697 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2018-02-03 22:51:24,699 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:51:24,705 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-02-03 22:51:24,706 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:52, output treesize:37 [2018-02-03 22:51:24,812 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-03 22:51:24,829 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-03 22:51:24,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 30 [2018-02-03 22:51:24,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-02-03 22:51:24,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-02-03 22:51:24,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2018-02-03 22:51:24,830 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 31 states. [2018-02-03 22:51:27,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-03 22:51:27,978 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2018-02-03 22:51:27,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-02-03 22:51:27,979 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2018-02-03 22:51:27,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-03 22:51:27,979 INFO L225 Difference]: With dead ends: 74 [2018-02-03 22:51:27,979 INFO L226 Difference]: Without dead ends: 0 [2018-02-03 22:51:27,980 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=259, Invalid=1997, Unknown=0, NotChecked=0, Total=2256 [2018-02-03 22:51:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-03 22:51:27,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-03 22:51:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-03 22:51:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-03 22:51:27,980 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-02-03 22:51:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-03 22:51:27,980 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-03 22:51:27,980 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-02-03 22:51:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-03 22:51:27,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-03 22:51:27,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.02 10:51:27 BoogieIcfgContainer [2018-02-03 22:51:27,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-03 22:51:27,984 INFO L168 Benchmark]: Toolchain (without parser) took 12456.78 ms. Allocated memory was 407.4 MB in the beginning and 748.7 MB in the end (delta: 341.3 MB). Free memory was 365.6 MB in the beginning and 658.2 MB in the end (delta: -292.6 MB). Peak memory consumption was 48.7 MB. Max. memory is 5.3 GB. [2018-02-03 22:51:27,985 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 407.4 MB. Free memory is still 370.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-03 22:51:27,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.02 ms. Allocated memory is still 407.4 MB. Free memory was 364.2 MB in the beginning and 353.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-03 22:51:27,986 INFO L168 Benchmark]: Boogie Preprocessor took 26.66 ms. Allocated memory is still 407.4 MB. Free memory was 353.6 MB in the beginning and 352.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-03 22:51:27,986 INFO L168 Benchmark]: RCFGBuilder took 177.06 ms. Allocated memory is still 407.4 MB. Free memory was 352.3 MB in the beginning and 334.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 5.3 GB. [2018-02-03 22:51:27,986 INFO L168 Benchmark]: TraceAbstraction took 12088.86 ms. Allocated memory was 407.4 MB in the beginning and 748.7 MB in the end (delta: 341.3 MB). Free memory was 332.9 MB in the beginning and 658.2 MB in the end (delta: -325.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 5.3 GB. [2018-02-03 22:51:27,987 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 407.4 MB. Free memory is still 370.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 161.02 ms. Allocated memory is still 407.4 MB. Free memory was 364.2 MB in the beginning and 353.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 26.66 ms. Allocated memory is still 407.4 MB. Free memory was 353.6 MB in the beginning and 352.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 177.06 ms. Allocated memory is still 407.4 MB. Free memory was 352.3 MB in the beginning and 334.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 12088.86 ms. Allocated memory was 407.4 MB in the beginning and 748.7 MB in the end (delta: 341.3 MB). Free memory was 332.9 MB in the beginning and 658.2 MB in the end (delta: -325.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 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: 554]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 9 error locations. SAFE Result, 12.0s OverallTime, 14 OverallIterations, 3 TraceHistogramMax, 8.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 417 SDtfs, 831 SDslu, 2222 SDs, 0 SdLazy, 2307 SolverSat, 189 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=11, 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, 14 MinimizatonAttempts, 63 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 443 NumberOfCodeBlocks, 443 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 425 ConstructedInterpolants, 42 QuantifiedInterpolants, 142296 SizeOfPredicates, 56 NumberOfNonLiveVariables, 622 ConjunctsInSsa, 159 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 7/60 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_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-03_22-51-27-992.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-03_22-51-27-992.csv Received shutdown request...