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/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum05_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d63d1fb [2018-01-27 22:58:26,453 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-27 22:58:26,457 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-27 22:58:26,480 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-27 22:58:26,481 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-27 22:58:26,482 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-27 22:58:26,484 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-27 22:58:26,487 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-27 22:58:26,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-27 22:58:26,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-27 22:58:26,497 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-27 22:58:26,497 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-27 22:58:26,499 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-27 22:58:26,502 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-27 22:58:26,503 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-27 22:58:26,507 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-27 22:58:26,510 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-27 22:58:26,513 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-27 22:58:26,515 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-27 22:58:26,517 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-27 22:58:26,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-27 22:58:26,530 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-27 22:58:26,532 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-27 22:58:26,532 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-27 22:58:26,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-27 22:58:26,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-27 22:58:26,551 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-27 22:58:26,551 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-27 22:58:26,552 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-27 22:58:26,552 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-27 22:58:26,552 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-27 22:58:26,553 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-27 22:58:26,554 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-27 22:58:26,554 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-27 22:58:26,554 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-27 22:58:26,554 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-27 22:58:26,555 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-27 22:58:26,555 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-27 22:58:26,555 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-27 22:58:26,555 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-27 22:58:26,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-27 22:58:26,556 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-27 22:58:26,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-27 22:58:26,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-27 22:58:26,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-27 22:58:26,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-27 22:58:26,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-27 22:58:26,558 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-27 22:58:26,558 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-27 22:58:26,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-27 22:58:26,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-27 22:58:26,559 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-27 22:58:26,559 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-27 22:58:26,559 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-27 22:58:26,559 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-27 22:58:26,560 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-27 22:58:26,560 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-27 22:58:26,560 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-27 22:58:26,560 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-27 22:58:26,562 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-27 22:58:26,562 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-27 22:58:26,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-27 22:58:26,660 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-27 22:58:26,668 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-27 22:58:26,670 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-27 22:58:26,671 INFO L276 PluginConnector]: CDTParser initialized [2018-01-27 22:58:26,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05_false-unreach-call_true-termination.i [2018-01-27 22:58:26,874 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-27 22:58:26,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-27 22:58:26,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-27 22:58:26,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-27 22:58:26,904 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-27 22:58:26,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:58:26" (1/1) ... [2018-01-27 22:58:26,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22eb859a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:26, skipping insertion in model container [2018-01-27 22:58:26,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 10:58:26" (1/1) ... [2018-01-27 22:58:26,945 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-27 22:58:26,984 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-27 22:58:27,277 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-27 22:58:27,339 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-27 22:58:27,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27 WrapperNode [2018-01-27 22:58:27,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-27 22:58:27,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-27 22:58:27,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-27 22:58:27,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-27 22:58:27,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (1/1) ... [2018-01-27 22:58:27,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (1/1) ... [2018-01-27 22:58:27,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (1/1) ... [2018-01-27 22:58:27,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (1/1) ... [2018-01-27 22:58:27,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (1/1) ... [2018-01-27 22:58:27,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (1/1) ... [2018-01-27 22:58:27,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (1/1) ... [2018-01-27 22:58:27,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-27 22:58:27,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-27 22:58:27,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-27 22:58:27,455 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-27 22:58:27,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (1/1) ... No working directory specified, using /storage/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 [2018-01-27 22:58:27,563 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-27 22:58:27,563 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-27 22:58:27,564 INFO L136 BoogieDeclarations]: Found implementation of procedure init_nondet [2018-01-27 22:58:27,564 INFO L136 BoogieDeclarations]: Found implementation of procedure rangesum [2018-01-27 22:58:27,564 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-27 22:58:27,564 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-27 22:58:27,565 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-27 22:58:27,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-27 22:58:27,565 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-27 22:58:27,565 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-27 22:58:27,565 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-27 22:58:27,566 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-27 22:58:27,566 INFO L128 BoogieDeclarations]: Found specification of procedure init_nondet [2018-01-27 22:58:27,566 INFO L128 BoogieDeclarations]: Found specification of procedure rangesum [2018-01-27 22:58:27,566 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-27 22:58:27,567 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-27 22:58:27,567 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-27 22:58:28,261 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-27 22:58:28,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:58:28 BoogieIcfgContainer [2018-01-27 22:58:28,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-27 22:58:28,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-27 22:58:28,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-27 22:58:28,306 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-27 22:58:28,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 10:58:26" (1/3) ... [2018-01-27 22:58:28,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa8a121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:58:28, skipping insertion in model container [2018-01-27 22:58:28,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 10:58:27" (2/3) ... [2018-01-27 22:58:28,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa8a121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 10:58:28, skipping insertion in model container [2018-01-27 22:58:28,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 10:58:28" (3/3) ... [2018-01-27 22:58:28,314 INFO L105 eAbstractionObserver]: Analyzing ICFG rangesum05_false-unreach-call_true-termination.i [2018-01-27 22:58:28,331 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-27 22:58:28,349 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-27 22:58:28,458 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 22:58:28,458 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 22:58:28,459 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 22:58:28,459 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 22:58:28,460 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 22:58:28,460 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 22:58:28,460 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 22:58:28,460 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-27 22:58:28,462 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 22:58:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 22:58:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-27 22:58:28,506 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:28,507 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-27 22:58:28,508 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-27 22:58:28,517 INFO L82 PathProgramCache]: Analyzing trace with hash 125893, now seen corresponding path program 1 times [2018-01-27 22:58:28,520 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:28,522 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:28,611 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:28,611 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:28,612 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 22:58:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 22:58:28,743 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-27 22:58:28,758 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 22:58:28,780 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 22:58:28,780 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 22:58:28,780 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 22:58:28,780 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 22:58:28,780 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 22:58:28,781 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 22:58:28,781 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 22:58:28,781 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-27 22:58:28,781 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 22:58:28,786 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 22:58:28,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-27 22:58:28,794 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:28,794 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:28,794 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:28,795 INFO L82 PathProgramCache]: Analyzing trace with hash 375279108, now seen corresponding path program 1 times [2018-01-27 22:58:28,797 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:28,797 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:28,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:28,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:28,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:28,877 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:28,946 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-27 22:58:28,947 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 22:58:28,947 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-01-27 22:58:28,970 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 22:58:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:29,132 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-27 22:58:29,225 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:29,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-27 22:58:29,229 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-27 22:58:29,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-27 22:58:29,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 22:58:29,254 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-01-27 22:58:29,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:29,435 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2018-01-27 22:58:29,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-27 22:58:29,437 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 50 [2018-01-27 22:58:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:29,456 INFO L225 Difference]: With dead ends: 104 [2018-01-27 22:58:29,457 INFO L226 Difference]: Without dead ends: 55 [2018-01-27 22:58:29,463 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 22:58:29,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-01-27 22:58:29,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-01-27 22:58:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-27 22:58:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2018-01-27 22:58:29,534 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 50 [2018-01-27 22:58:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:29,535 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2018-01-27 22:58:29,535 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-27 22:58:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2018-01-27 22:58:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-01-27 22:58:29,541 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:29,541 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:29,542 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:29,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1865795361, now seen corresponding path program 1 times [2018-01-27 22:58:29,543 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:29,543 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:29,545 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:29,545 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:29,545 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:29,570 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:29,570 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:29,571 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:29,584 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:29,656 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-27 22:58:29,808 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:29,809 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 22:58:29,810 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 22:58:29,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 22:58:29,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 22:58:29,812 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 3 states. [2018-01-27 22:58:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:29,949 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2018-01-27 22:58:29,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 22:58:29,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-01-27 22:58:29,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:29,954 INFO L225 Difference]: With dead ends: 102 [2018-01-27 22:58:29,954 INFO L226 Difference]: Without dead ends: 60 [2018-01-27 22:58:29,960 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 22:58:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-27 22:58:29,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-01-27 22:58:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-27 22:58:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2018-01-27 22:58:29,985 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 55 [2018-01-27 22:58:29,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:29,986 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2018-01-27 22:58:29,986 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 22:58:29,986 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2018-01-27 22:58:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-01-27 22:58:29,995 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:29,995 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:29,995 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:29,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1346148095, now seen corresponding path program 1 times [2018-01-27 22:58:29,996 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:29,996 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:30,004 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:30,004 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:30,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:30,069 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:30,181 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-27 22:58:30,190 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 22:58:30,190 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-27 22:58:30,208 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:30,323 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-27 22:58:30,452 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:30,452 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 22:58:30,453 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 22:58:30,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 22:58:30,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 22:58:30,454 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 3 states. [2018-01-27 22:58:30,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:30,558 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2018-01-27 22:58:30,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 22:58:30,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-01-27 22:58:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:30,568 INFO L225 Difference]: With dead ends: 104 [2018-01-27 22:58:30,568 INFO L226 Difference]: Without dead ends: 66 [2018-01-27 22:58:30,570 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 22:58:30,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-27 22:58:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2018-01-27 22:58:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-27 22:58:30,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2018-01-27 22:58:30,587 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 60 [2018-01-27 22:58:30,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:30,588 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2018-01-27 22:58:30,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 22:58:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2018-01-27 22:58:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-01-27 22:58:30,590 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:30,591 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:30,591 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:30,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1114993982, now seen corresponding path program 1 times [2018-01-27 22:58:30,591 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:30,591 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:30,593 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:30,593 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:30,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:30,617 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-27 22:58:30,726 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 22:58:30,726 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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) [2018-01-27 22:58:30,746 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 22:58:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:30,835 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-27 22:58:30,923 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:30,923 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-01-27 22:58:30,924 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 22:58:30,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 22:58:30,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:30,925 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 4 states. [2018-01-27 22:58:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:30,988 INFO L93 Difference]: Finished difference Result 109 states and 128 transitions. [2018-01-27 22:58:30,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 22:58:30,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-01-27 22:58:30,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:30,991 INFO L225 Difference]: With dead ends: 109 [2018-01-27 22:58:30,992 INFO L226 Difference]: Without dead ends: 66 [2018-01-27 22:58:30,993 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:30,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-27 22:58:31,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2018-01-27 22:58:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-27 22:58:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2018-01-27 22:58:31,005 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 60 [2018-01-27 22:58:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:31,005 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2018-01-27 22:58:31,005 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 22:58:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2018-01-27 22:58:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-01-27 22:58:31,008 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:31,008 INFO L330 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:31,008 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:31,009 INFO L82 PathProgramCache]: Analyzing trace with hash -277594267, now seen corresponding path program 1 times [2018-01-27 22:58:31,009 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:31,009 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:31,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:31,011 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:31,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:31,074 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-27 22:58:31,327 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 22:58:31,327 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-27 22:58:31,349 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 22:58:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:31,418 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-27 22:58:31,561 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:31,561 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-01-27 22:58:31,562 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 22:58:31,563 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 22:58:31,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:31,564 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 5 states. [2018-01-27 22:58:31,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:31,933 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2018-01-27 22:58:31,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 22:58:31,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2018-01-27 22:58:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:31,941 INFO L225 Difference]: With dead ends: 123 [2018-01-27 22:58:31,941 INFO L226 Difference]: Without dead ends: 77 [2018-01-27 22:58:31,942 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-27 22:58:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2018-01-27 22:58:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-27 22:58:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2018-01-27 22:58:31,964 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 72 [2018-01-27 22:58:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:31,965 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2018-01-27 22:58:31,965 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 22:58:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2018-01-27 22:58:31,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-01-27 22:58:31,967 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:31,968 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:31,968 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:31,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1605849016, now seen corresponding path program 1 times [2018-01-27 22:58:31,968 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:31,969 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:31,970 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:31,971 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:31,971 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:31,994 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:31,994 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:31,994 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:32,010 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:32,089 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-27 22:58:32,323 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:32,324 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 22:58:32,324 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 22:58:32,325 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 22:58:32,325 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:32,325 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 4 states. [2018-01-27 22:58:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:32,524 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2018-01-27 22:58:32,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 22:58:32,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2018-01-27 22:58:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:32,533 INFO L225 Difference]: With dead ends: 123 [2018-01-27 22:58:32,533 INFO L226 Difference]: Without dead ends: 73 [2018-01-27 22:58:32,534 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:32,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-01-27 22:58:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2018-01-27 22:58:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-27 22:58:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2018-01-27 22:58:32,554 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 96 [2018-01-27 22:58:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:32,555 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2018-01-27 22:58:32,555 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 22:58:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2018-01-27 22:58:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-01-27 22:58:32,566 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:32,567 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:32,567 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:32,567 INFO L82 PathProgramCache]: Analyzing trace with hash 489255322, now seen corresponding path program 2 times [2018-01-27 22:58:32,567 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:32,568 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:32,569 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:32,569 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:32,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:32,612 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:32,613 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:32,613 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 22:58:32,631 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:32,661 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 22:58:32,687 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 22:58:32,692 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 22:58:32,701 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:32,768 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-27 22:58:32,801 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:32,801 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 22:58:32,802 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 22:58:32,802 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 22:58:32,802 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:32,803 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 5 states. [2018-01-27 22:58:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:32,859 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2018-01-27 22:58:32,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 22:58:32,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2018-01-27 22:58:32,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:32,862 INFO L225 Difference]: With dead ends: 128 [2018-01-27 22:58:32,863 INFO L226 Difference]: Without dead ends: 78 [2018-01-27 22:58:32,864 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-27 22:58:32,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2018-01-27 22:58:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-27 22:58:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2018-01-27 22:58:32,875 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 101 [2018-01-27 22:58:32,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:32,876 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2018-01-27 22:58:32,876 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 22:58:32,876 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2018-01-27 22:58:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-27 22:58:32,879 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:32,879 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:32,879 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:32,880 INFO L82 PathProgramCache]: Analyzing trace with hash -930403080, now seen corresponding path program 3 times [2018-01-27 22:58:32,880 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:32,880 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:32,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:32,882 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 22:58:32,882 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:32,905 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:32,905 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:32,905 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:32,922 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-27 22:58:32,951 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 22:58:32,963 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 22:58:32,976 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 22:58:32,978 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 22:58:32,984 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-01-27 22:58:33,067 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:33,067 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 22:58:33,068 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 22:58:33,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 22:58:33,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:33,068 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 4 states. [2018-01-27 22:58:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:33,117 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2018-01-27 22:58:33,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 22:58:33,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-01-27 22:58:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:33,120 INFO L225 Difference]: With dead ends: 112 [2018-01-27 22:58:33,121 INFO L226 Difference]: Without dead ends: 85 [2018-01-27 22:58:33,122 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-27 22:58:33,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-01-27 22:58:33,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-01-27 22:58:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-01-27 22:58:33,135 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 106 [2018-01-27 22:58:33,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:33,136 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-01-27 22:58:33,136 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 22:58:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-01-27 22:58:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-01-27 22:58:33,139 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:33,139 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:33,140 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:33,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1827610016, now seen corresponding path program 4 times [2018-01-27 22:58:33,140 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:33,140 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:33,142 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:33,142 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 22:58:33,143 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:33,165 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:33,165 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:33,166 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:33,178 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-27 22:58:33,225 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 22:58:33,231 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2018-01-27 22:58:33,349 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:33,352 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 22:58:33,353 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 22:58:33,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 22:58:33,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 22:58:33,354 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 6 states. [2018-01-27 22:58:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:33,416 INFO L93 Difference]: Finished difference Result 145 states and 157 transitions. [2018-01-27 22:58:33,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 22:58:33,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-01-27 22:58:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:33,419 INFO L225 Difference]: With dead ends: 145 [2018-01-27 22:58:33,419 INFO L226 Difference]: Without dead ends: 89 [2018-01-27 22:58:33,421 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 22:58:33,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-27 22:58:33,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2018-01-27 22:58:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-01-27 22:58:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2018-01-27 22:58:33,432 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 112 [2018-01-27 22:58:33,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:33,437 INFO L432 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2018-01-27 22:58:33,437 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 22:58:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2018-01-27 22:58:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-01-27 22:58:33,440 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:33,440 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:33,440 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:33,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1209466946, now seen corresponding path program 5 times [2018-01-27 22:58:33,441 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:33,441 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:33,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:33,443 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 22:58:33,443 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:33,466 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:33,466 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:33,466 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:33,486 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-27 22:58:33,516 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 22:58:33,523 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 22:58:33,525 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 22:58:33,530 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-01-27 22:58:33,651 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:33,651 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 22:58:33,652 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 22:58:33,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 22:58:33,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:33,653 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand 5 states. [2018-01-27 22:58:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:33,713 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2018-01-27 22:58:33,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 22:58:33,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-01-27 22:58:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:33,716 INFO L225 Difference]: With dead ends: 144 [2018-01-27 22:58:33,717 INFO L226 Difference]: Without dead ends: 92 [2018-01-27 22:58:33,718 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-01-27 22:58:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-01-27 22:58:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-01-27 22:58:33,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2018-01-27 22:58:33,734 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 117 [2018-01-27 22:58:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:33,735 INFO L432 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2018-01-27 22:58:33,735 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 22:58:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2018-01-27 22:58:33,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-01-27 22:58:33,738 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:33,739 INFO L330 BasicCegarLoop]: trace histogram [12, 9, 9, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:33,739 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:33,742 INFO L82 PathProgramCache]: Analyzing trace with hash 963031532, now seen corresponding path program 6 times [2018-01-27 22:58:33,743 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:33,743 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:33,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:33,746 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 22:58:33,746 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:33,780 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:33,780 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:33,780 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:33,800 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-27 22:58:33,835 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 22:58:33,842 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 22:58:33,861 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 22:58:33,874 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 22:58:33,886 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 22:58:33,915 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 22:58:33,945 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-27 22:58:33,947 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 22:58:33,953 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 122 proven. 20 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-01-27 22:58:34,058 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:34,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 22:58:34,059 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 22:58:34,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 22:58:34,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 22:58:34,060 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 6 states. [2018-01-27 22:58:34,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:34,191 INFO L93 Difference]: Finished difference Result 158 states and 175 transitions. [2018-01-27 22:58:34,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 22:58:34,192 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-01-27 22:58:34,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:34,194 INFO L225 Difference]: With dead ends: 158 [2018-01-27 22:58:34,195 INFO L226 Difference]: Without dead ends: 100 [2018-01-27 22:58:34,195 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 22:58:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-01-27 22:58:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-01-27 22:58:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-01-27 22:58:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 107 transitions. [2018-01-27 22:58:34,221 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 107 transitions. Word has length 135 [2018-01-27 22:58:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:34,222 INFO L432 AbstractCegarLoop]: Abstraction has 100 states and 107 transitions. [2018-01-27 22:58:34,222 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 22:58:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 107 transitions. [2018-01-27 22:58:34,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-01-27 22:58:34,224 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:34,225 INFO L330 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:34,225 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:34,225 INFO L82 PathProgramCache]: Analyzing trace with hash 351449530, now seen corresponding path program 7 times [2018-01-27 22:58:34,225 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:34,225 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:34,226 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:34,226 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 22:58:34,226 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:34,252 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:34,252 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:34,252 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 22:58:34,279 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:34,345 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-01-27 22:58:34,489 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:34,489 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-01-27 22:58:34,490 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-27 22:58:34,490 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-27 22:58:34,491 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 22:58:34,491 INFO L87 Difference]: Start difference. First operand 100 states and 107 transitions. Second operand 7 states. [2018-01-27 22:58:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:34,812 INFO L93 Difference]: Finished difference Result 175 states and 189 transitions. [2018-01-27 22:58:34,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-27 22:58:34,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2018-01-27 22:58:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:34,817 INFO L225 Difference]: With dead ends: 175 [2018-01-27 22:58:34,817 INFO L226 Difference]: Without dead ends: 105 [2018-01-27 22:58:34,820 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-01-27 22:58:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-01-27 22:58:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-01-27 22:58:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-27 22:58:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 112 transitions. [2018-01-27 22:58:34,845 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 112 transitions. Word has length 159 [2018-01-27 22:58:34,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:34,845 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 112 transitions. [2018-01-27 22:58:34,845 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-27 22:58:34,846 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 112 transitions. [2018-01-27 22:58:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-01-27 22:58:34,847 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:34,848 INFO L330 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:34,848 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:34,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2073699432, now seen corresponding path program 8 times [2018-01-27 22:58:34,848 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:34,849 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:34,853 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:34,853 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:34,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:34,887 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:34,888 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:34,888 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:34,905 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-27 22:58:34,940 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 22:58:34,978 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 22:58:34,984 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 22:58:34,991 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 268 proven. 10 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-01-27 22:58:35,175 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:35,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-01-27 22:58:35,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 22:58:35,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 22:58:35,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:35,177 INFO L87 Difference]: Start difference. First operand 105 states and 112 transitions. Second operand 5 states. [2018-01-27 22:58:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:35,255 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2018-01-27 22:58:35,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 22:58:35,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2018-01-27 22:58:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:35,259 INFO L225 Difference]: With dead ends: 156 [2018-01-27 22:58:35,259 INFO L226 Difference]: Without dead ends: 115 [2018-01-27 22:58:35,260 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-01-27 22:58:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-01-27 22:58:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-01-27 22:58:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2018-01-27 22:58:35,271 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 164 [2018-01-27 22:58:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:35,272 INFO L432 AbstractCegarLoop]: Abstraction has 111 states and 118 transitions. [2018-01-27 22:58:35,272 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 22:58:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 118 transitions. [2018-01-27 22:58:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-01-27 22:58:35,274 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:35,274 INFO L330 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:35,275 INFO L371 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:35,275 INFO L82 PathProgramCache]: Analyzing trace with hash -852309760, now seen corresponding path program 9 times [2018-01-27 22:58:35,275 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:35,275 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:35,277 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:35,277 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 22:58:35,277 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:35,306 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:35,306 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:35,306 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:35,321 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-27 22:58:35,348 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 22:58:35,362 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 22:58:35,378 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 22:58:35,395 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 22:58:35,427 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-27 22:58:35,429 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 22:58:35,437 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 268 proven. 24 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2018-01-27 22:58:35,579 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:35,579 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-01-27 22:58:35,580 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 22:58:35,580 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 22:58:35,580 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 22:58:35,580 INFO L87 Difference]: Start difference. First operand 111 states and 118 transitions. Second operand 6 states. [2018-01-27 22:58:35,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:35,635 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2018-01-27 22:58:35,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 22:58:35,635 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-01-27 22:58:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:35,637 INFO L225 Difference]: With dead ends: 158 [2018-01-27 22:58:35,638 INFO L226 Difference]: Without dead ends: 117 [2018-01-27 22:58:35,638 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-01-27 22:58:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-01-27 22:58:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-01-27 22:58:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-01-27 22:58:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2018-01-27 22:58:35,648 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 170 [2018-01-27 22:58:35,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:35,649 INFO L432 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2018-01-27 22:58:35,649 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 22:58:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2018-01-27 22:58:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-01-27 22:58:35,652 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:35,653 INFO L330 BasicCegarLoop]: trace histogram [18, 15, 15, 9, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:35,653 INFO L371 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-27 22:58:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash -278787992, now seen corresponding path program 10 times [2018-01-27 22:58:35,653 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:35,654 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:35,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:35,657 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-27 22:58:35,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:35,694 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:35,694 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:35,694 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:35,718 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-27 22:58:35,942 INFO L239 tOrderPrioritization]: Conjunction of SSA is sat [2018-01-27 22:58:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-27 22:58:36,384 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-27 22:58:36,464 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 22:58:36,469 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 22:58:36,484 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 22:58:36,499 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 22:58:36,517 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 22:58:36,527 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 22:58:36,528 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-27 22:58:36,628 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 22:58:36,629 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 22:58:36,629 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 22:58:36,629 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 22:58:36,629 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 22:58:36,629 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 22:58:36,629 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 22:58:36,629 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-27 22:58:36,630 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 22:58:36,631 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 22:58:36,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-01-27 22:58:36,633 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:36,633 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2018-01-27 22:58:36,633 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-27 22:58:36,634 INFO L82 PathProgramCache]: Analyzing trace with hash 295362246, now seen corresponding path program 1 times [2018-01-27 22:58:36,634 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:36,634 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:36,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:36,639 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:36,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:36,649 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:36,659 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-27 22:58:36,659 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 22:58:36,659 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 22:58:36,674 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:36,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:36,710 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-27 22:58:36,764 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:36,765 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-27 22:58:36,765 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-27 22:58:36,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-27 22:58:36,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 22:58:36,766 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-01-27 22:58:36,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:36,771 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2018-01-27 22:58:36,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-27 22:58:36,771 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 48 [2018-01-27 22:58:36,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:36,772 INFO L225 Difference]: With dead ends: 104 [2018-01-27 22:58:36,773 INFO L226 Difference]: Without dead ends: 53 [2018-01-27 22:58:36,773 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 22:58:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-01-27 22:58:36,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-01-27 22:58:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-01-27 22:58:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-01-27 22:58:36,784 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 48 [2018-01-27 22:58:36,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:36,785 INFO L432 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-01-27 22:58:36,785 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-27 22:58:36,788 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-01-27 22:58:36,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-01-27 22:58:36,790 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:36,790 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:36,790 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-27 22:58:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1589118173, now seen corresponding path program 1 times [2018-01-27 22:58:36,791 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:36,791 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:36,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:36,796 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:36,796 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:36,806 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:36,807 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:36,807 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 22:58:36,825 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:36,860 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-01-27 22:58:36,968 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:36,969 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 22:58:36,969 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 22:58:36,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 22:58:36,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 22:58:36,970 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 3 states. [2018-01-27 22:58:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:37,073 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2018-01-27 22:58:37,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 22:58:37,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-01-27 22:58:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:37,076 INFO L225 Difference]: With dead ends: 98 [2018-01-27 22:58:37,077 INFO L226 Difference]: Without dead ends: 58 [2018-01-27 22:58:37,077 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 22:58:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-27 22:58:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2018-01-27 22:58:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-01-27 22:58:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2018-01-27 22:58:37,085 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 53 [2018-01-27 22:58:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:37,086 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2018-01-27 22:58:37,086 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 22:58:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2018-01-27 22:58:37,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-01-27 22:58:37,088 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:37,088 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:37,088 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-27 22:58:37,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1830999423, now seen corresponding path program 1 times [2018-01-27 22:58:37,089 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:37,089 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:37,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:37,090 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:37,090 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:37,112 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:37,157 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-27 22:58:37,164 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 22:58:37,164 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-27 22:58:37,185 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 22:58:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:37,228 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-01-27 22:58:37,275 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:37,276 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-27 22:58:37,276 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-27 22:58:37,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-27 22:58:37,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 22:58:37,277 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 3 states. [2018-01-27 22:58:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:37,358 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2018-01-27 22:58:37,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 22:58:37,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-01-27 22:58:37,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:37,360 INFO L225 Difference]: With dead ends: 100 [2018-01-27 22:58:37,360 INFO L226 Difference]: Without dead ends: 64 [2018-01-27 22:58:37,361 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-27 22:58:37,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-27 22:58:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-01-27 22:58:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-27 22:58:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-01-27 22:58:37,368 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 58 [2018-01-27 22:58:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:37,368 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-01-27 22:58:37,368 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-27 22:58:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-01-27 22:58:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-01-27 22:58:37,369 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:37,370 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:37,370 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-27 22:58:37,370 INFO L82 PathProgramCache]: Analyzing trace with hash 568757376, now seen corresponding path program 1 times [2018-01-27 22:58:37,370 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:37,371 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:37,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:37,372 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:37,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:37,384 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-27 22:58:37,467 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 22:58:37,467 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 22:58:37,480 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:37,525 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-27 22:58:37,562 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:37,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-01-27 22:58:37,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 22:58:37,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 22:58:37,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:37,564 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 4 states. [2018-01-27 22:58:37,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:37,613 INFO L93 Difference]: Finished difference Result 105 states and 124 transitions. [2018-01-27 22:58:37,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-27 22:58:37,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-01-27 22:58:37,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:37,615 INFO L225 Difference]: With dead ends: 105 [2018-01-27 22:58:37,615 INFO L226 Difference]: Without dead ends: 64 [2018-01-27 22:58:37,616 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-27 22:58:37,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2018-01-27 22:58:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-27 22:58:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-01-27 22:58:37,623 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 58 [2018-01-27 22:58:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:37,623 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-01-27 22:58:37,623 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 22:58:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-01-27 22:58:37,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-01-27 22:58:37,625 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:37,625 INFO L330 BasicCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:37,625 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-27 22:58:37,626 INFO L82 PathProgramCache]: Analyzing trace with hash -728779673, now seen corresponding path program 1 times [2018-01-27 22:58:37,626 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:37,626 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:37,627 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:37,628 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:37,628 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:37,645 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-27 22:58:37,832 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-27 22:58:37,832 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-27 22:58:37,851 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:37,902 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-27 22:58:37,969 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:37,969 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-01-27 22:58:37,969 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-27 22:58:37,970 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-27 22:58:37,970 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:37,970 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 5 states. [2018-01-27 22:58:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:38,250 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2018-01-27 22:58:38,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-27 22:58:38,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2018-01-27 22:58:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:38,252 INFO L225 Difference]: With dead ends: 119 [2018-01-27 22:58:38,252 INFO L226 Difference]: Without dead ends: 75 [2018-01-27 22:58:38,253 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-27 22:58:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-27 22:58:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2018-01-27 22:58:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-27 22:58:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-01-27 22:58:38,263 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 70 [2018-01-27 22:58:38,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:38,264 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-01-27 22:58:38,264 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-27 22:58:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-01-27 22:58:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-01-27 22:58:38,265 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:38,266 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:38,266 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-27 22:58:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash -655311494, now seen corresponding path program 1 times [2018-01-27 22:58:38,267 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:38,267 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:38,277 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:38,277 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:38,277 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:38,299 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:38,299 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:38,300 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 22:58:38,326 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:38,412 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2018-01-27 22:58:38,619 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-01-27 22:58:38,620 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-01-27 22:58:38,620 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-27 22:58:38,621 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-27 22:58:38,621 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:38,622 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 4 states. [2018-01-27 22:58:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:38,767 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2018-01-27 22:58:38,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-27 22:58:38,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2018-01-27 22:58:38,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:38,769 INFO L225 Difference]: With dead ends: 119 [2018-01-27 22:58:38,769 INFO L226 Difference]: Without dead ends: 71 [2018-01-27 22:58:38,770 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-27 22:58:38,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-01-27 22:58:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 68. [2018-01-27 22:58:38,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-01-27 22:58:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2018-01-27 22:58:38,777 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 94 [2018-01-27 22:58:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:38,778 INFO L432 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2018-01-27 22:58:38,778 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-27 22:58:38,778 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2018-01-27 22:58:38,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-27 22:58:38,780 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:38,780 INFO L330 BasicCegarLoop]: trace histogram [9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:38,780 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation]=== [2018-01-27 22:58:38,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1055256540, now seen corresponding path program 2 times [2018-01-27 22:58:38,781 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:38,781 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:38,782 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:38,783 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:38,783 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:38,796 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-27 22:58:38,796 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-27 22:58:38,797 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-01-27 22:58:38,817 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-27 22:58:38,839 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-27 22:58:38,843 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-27 22:58:38,848 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-27 22:58:38,948 INFO L700 Elim1Store]: detected not equals via solver [2018-01-27 22:58:38,971 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 5 [2018-01-27 22:58:38,972 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-27 22:58:38,975 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-27 22:58:38,975 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-27 22:58:39,090 INFO L700 Elim1Store]: detected not equals via solver [2018-01-27 22:58:39,091 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 5 [2018-01-27 22:58:39,092 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-27 22:58:39,094 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-27 22:58:39,095 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-27 22:58:39,260 INFO L700 Elim1Store]: detected not equals via solver [2018-01-27 22:58:39,262 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 5 [2018-01-27 22:58:39,262 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-27 22:58:39,290 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-27 22:58:39,290 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-27 22:58:39,551 INFO L700 Elim1Store]: detected not equals via solver [2018-01-27 22:58:39,553 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 5 [2018-01-27 22:58:39,553 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-27 22:58:39,583 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-27 22:58:39,583 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-27 22:58:39,824 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#x~8.base| Int)) (and (= 0 (select |c_old(#valid)| |main_~#x~8.base|)) (= |c_#valid| (store |c_old(#valid)| |main_~#x~8.base| 0)))) is different from true [2018-01-27 22:58:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-01-27 22:58:39,908 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:39,908 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-27 22:58:39,909 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-27 22:58:39,909 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-27 22:58:39,909 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2018-01-27 22:58:39,910 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 6 states. [2018-01-27 22:58:40,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:40,784 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-01-27 22:58:40,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-27 22:58:40,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-01-27 22:58:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:40,785 INFO L225 Difference]: With dead ends: 68 [2018-01-27 22:58:40,785 INFO L226 Difference]: Without dead ends: 0 [2018-01-27 22:58:40,786 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2018-01-27 22:58:40,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-27 22:58:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-27 22:58:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-27 22:58:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-27 22:58:40,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2018-01-27 22:58:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:40,787 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-27 22:58:40,787 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-27 22:58:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-27 22:58:40,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-27 22:58:40,792 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 22:58:40,793 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 22:58:40,793 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 22:58:40,793 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 22:58:40,793 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 22:58:40,793 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 22:58:40,793 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 22:58:40,793 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == rangesumErr0EnsuresViolation======== [2018-01-27 22:58:40,793 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 22:58:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 22:58:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-27 22:58:40,802 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:40,802 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:40,802 INFO L371 AbstractCegarLoop]: === Iteration 1 === [rangesumErr0EnsuresViolation]=== [2018-01-27 22:58:40,802 INFO L82 PathProgramCache]: Analyzing trace with hash -384582028, now seen corresponding path program 1 times [2018-01-27 22:58:40,802 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:40,802 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:40,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:40,804 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:40,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:40,810 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-27 22:58:40,829 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:40,829 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-27 22:58:40,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-27 22:58:40,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-27 22:58:40,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 22:58:40,831 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-01-27 22:58:40,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:40,836 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2018-01-27 22:58:40,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-27 22:58:40,836 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-27 22:58:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:40,837 INFO L225 Difference]: With dead ends: 104 [2018-01-27 22:58:40,837 INFO L226 Difference]: Without dead ends: 0 [2018-01-27 22:58:40,844 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 22:58:40,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-27 22:58:40,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-27 22:58:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-27 22:58:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-27 22:58:40,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-01-27 22:58:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:40,846 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-27 22:58:40,846 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-27 22:58:40,846 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-27 22:58:40,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-27 22:58:40,849 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-27 22:58:40,849 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-27 22:58:40,849 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-27 22:58:40,849 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-27 22:58:40,849 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-27 22:58:40,850 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-27 22:58:40,850 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-27 22:58:40,850 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == init_nondetErr0EnsuresViolation======== [2018-01-27 22:58:40,850 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-27 22:58:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-01-27 22:58:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-01-27 22:58:40,858 INFO L322 BasicCegarLoop]: Found error trace [2018-01-27 22:58:40,858 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-27 22:58:40,858 INFO L371 AbstractCegarLoop]: === Iteration 1 === [init_nondetErr0EnsuresViolation]=== [2018-01-27 22:58:40,858 INFO L82 PathProgramCache]: Analyzing trace with hash -152246546, now seen corresponding path program 1 times [2018-01-27 22:58:40,858 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-27 22:58:40,859 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-27 22:58:40,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:40,860 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-27 22:58:40,860 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-27 22:58:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-27 22:58:40,870 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-27 22:58:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-27 22:58:40,887 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-27 22:58:40,887 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-27 22:58:40,887 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-27 22:58:40,888 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-27 22:58:40,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 22:58:40,888 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-01-27 22:58:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-27 22:58:40,895 INFO L93 Difference]: Finished difference Result 104 states and 127 transitions. [2018-01-27 22:58:40,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-27 22:58:40,895 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-01-27 22:58:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-27 22:58:40,896 INFO L225 Difference]: With dead ends: 104 [2018-01-27 22:58:40,896 INFO L226 Difference]: Without dead ends: 0 [2018-01-27 22:58:40,897 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-27 22:58:40,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-27 22:58:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-27 22:58:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-27 22:58:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-27 22:58:40,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-01-27 22:58:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-27 22:58:40,898 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-27 22:58:40,899 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-27 22:58:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-27 22:58:40,899 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-27 22:58:40,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 10:58:40 BoogieIcfgContainer [2018-01-27 22:58:40,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-27 22:58:40,911 INFO L168 Benchmark]: Toolchain (without parser) took 14035.18 ms. Allocated memory was 302.0 MB in the beginning and 558.4 MB in the end (delta: 256.4 MB). Free memory was 261.3 MB in the beginning and 428.5 MB in the end (delta: -167.3 MB). Peak memory consumption was 89.1 MB. Max. memory is 5.3 GB. [2018-01-27 22:58:40,918 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 302.0 MB. Free memory is still 265.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-27 22:58:40,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.35 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 251.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-27 22:58:40,919 INFO L168 Benchmark]: Boogie Preprocessor took 82.22 ms. Allocated memory is still 302.0 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-27 22:58:40,919 INFO L168 Benchmark]: RCFGBuilder took 852.15 ms. Allocated memory is still 302.0 MB. Free memory was 249.3 MB in the beginning and 230.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-01-27 22:58:40,919 INFO L168 Benchmark]: TraceAbstraction took 12610.44 ms. Allocated memory was 302.0 MB in the beginning and 558.4 MB in the end (delta: 256.4 MB). Free memory was 230.7 MB in the beginning and 428.5 MB in the end (delta: -197.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 5.3 GB. [2018-01-27 22:58:40,922 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 302.0 MB. Free memory is still 265.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 475.35 ms. Allocated memory is still 302.0 MB. Free memory was 259.3 MB in the beginning and 251.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 82.22 ms. Allocated memory is still 302.0 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 852.15 ms. Allocated memory is still 302.0 MB. Free memory was 249.3 MB in the beginning and 230.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 12610.44 ms. Allocated memory was 302.0 MB in the beginning and 558.4 MB in the end (delta: 256.4 MB). Free memory was 230.7 MB in the beginning and 428.5 MB in the end (delta: -197.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 5 procedures, 60 locations, 5 error locations. UNSAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L31] FCALL int x[5]; VAL [x={14:0}] [L32] CALL init_nondet(x) VAL [x={14:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={14:0}, x={14:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9723, i=0, x={14:0}, x={14:0}] [L6] i++ VAL [i=1, x={14:0}, x={14:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9723, i=1, x={14:0}, x={14:0}] [L6] i++ VAL [i=2, x={14:0}, x={14:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9723, i=2, x={14:0}, x={14:0}] [L6] i++ VAL [i=3, x={14:0}, x={14:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9723, i=3, x={14:0}, x={14:0}] [L6] i++ VAL [i=4, x={14:0}, x={14:0}] [L6] COND TRUE i < 5 [L7] FCALL x[i] = __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=9723, i=4, x={14:0}, x={14:0}] [L6] i++ VAL [i=5, x={14:0}, x={14:0}] [L6] COND FALSE, RET !(i < 5) VAL [i=5, x={14:0}, x={14:0}] [L32] init_nondet(x) VAL [x={14:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={14:0}] [L38] CALL, EXPR rangesum(x) VAL [x={14:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 5/2 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}, x[i]=9723] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=9723, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L18] COND TRUE i > 5/2 VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}, x[i]=9723] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=19446, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=9723, cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L38] EXPR rangesum(x) VAL [rangesum(x)=9723, x={14:0}] [L38] ret = rangesum(x) [L40] EXPR, FCALL x[0] VAL [ret=9723, x={14:0}, x[0]=9723] [L40] temp=x[0] [L40] EXPR, FCALL x[1] VAL [ret=9723, temp=9723, x={14:0}, x[1]=9723] [L40] FCALL x[0] = x[1] VAL [ret=9723, temp=9723, x={14:0}, x[1]=9723] [L40] FCALL x[1] = temp VAL [ret=9723, temp=9723, x={14:0}] [L41] CALL, EXPR rangesum(x) VAL [x={14:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 5/2 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}, x[i]=9723] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=9723, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L18] COND TRUE i > 5/2 VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}, x[i]=9723] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=19446, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=9723, cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L41] EXPR rangesum(x) VAL [rangesum(x)=9723, ret=9723, temp=9723, x={14:0}] [L41] ret2 = rangesum(x) [L42] EXPR, FCALL x[0] VAL [ret=9723, ret2=9723, temp=9723, x={14:0}, x[0]=9723] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=9723, ret2=9723, temp=9723, x={14:0}] [L43] COND TRUE i<5 -1 VAL [i=0, ret=9723, ret2=9723, temp=9723, x={14:0}] [L44] EXPR, FCALL x[i+1] VAL [i=0, ret=9723, ret2=9723, temp=9723, x={14:0}, x[i+1]=9723] [L44] FCALL x[i] = x[i+1] VAL [i=0, ret=9723, ret2=9723, temp=9723, x={14:0}, x[i+1]=9723] [L43] i++ VAL [i=1, ret=9723, ret2=9723, temp=9723, x={14:0}] [L43] COND TRUE i<5 -1 VAL [i=1, ret=9723, ret2=9723, temp=9723, x={14:0}] [L44] EXPR, FCALL x[i+1] VAL [i=1, ret=9723, ret2=9723, temp=9723, x={14:0}, x[i+1]=9723] [L44] FCALL x[i] = x[i+1] VAL [i=1, ret=9723, ret2=9723, temp=9723, x={14:0}, x[i+1]=9723] [L43] i++ VAL [i=2, ret=9723, ret2=9723, temp=9723, x={14:0}] [L43] COND TRUE i<5 -1 VAL [i=2, ret=9723, ret2=9723, temp=9723, x={14:0}] [L44] EXPR, FCALL x[i+1] VAL [i=2, ret=9723, ret2=9723, temp=9723, x={14:0}, x[i+1]=9723] [L44] FCALL x[i] = x[i+1] VAL [i=2, ret=9723, ret2=9723, temp=9723, x={14:0}, x[i+1]=9723] [L43] i++ VAL [i=3, ret=9723, ret2=9723, temp=9723, x={14:0}] [L43] COND TRUE i<5 -1 VAL [i=3, ret=9723, ret2=9723, temp=9723, x={14:0}] [L44] EXPR, FCALL x[i+1] VAL [i=3, ret=9723, ret2=9723, temp=9723, x={14:0}, x[i+1]=9723] [L44] FCALL x[i] = x[i+1] VAL [i=3, ret=9723, ret2=9723, temp=9723, x={14:0}, x[i+1]=9723] [L43] i++ VAL [i=4, ret=9723, ret2=9723, temp=9723, x={14:0}] [L43] COND FALSE !(i<5 -1) VAL [i=4, ret=9723, ret2=9723, temp=9723, x={14:0}] [L46] FCALL x[5 -1] = temp VAL [i=4, ret=9723, ret2=9723, temp=9723, x={14:0}] [L47] CALL, EXPR rangesum(x) VAL [x={14:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L18] COND TRUE i > 5/2 VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}] [L19] EXPR, FCALL x[i] VAL [cnt=0, i=3, ret=0, x={14:0}, x={14:0}, x[i]=9723] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=9723, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L18] COND TRUE i > 5/2 VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}] [L19] EXPR, FCALL x[i] VAL [cnt=1, i=4, ret=9723, x={14:0}, x={14:0}, x[i]=9723] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=19446, x={14:0}, x={14:0}] [L17] i++ VAL [cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L23] COND TRUE cnt !=0 [L24] RET return ret / cnt; VAL [\result=9723, cnt=2, i=5, ret=19446, x={14:0}, x={14:0}] [L47] EXPR rangesum(x) VAL [i=4, rangesum(x)=9723, ret=9723, ret2=9723, temp=9723, x={14:0}] [L47] ret5 = rangesum(x) [L49] COND FALSE !(ret != ret2 || ret !=ret5) VAL [i=4, ret=9723, ret2=9723, ret5=9723, temp=9723, x={14:0}] [L52] return 1; VAL [\result=1, i=4, ret=9723, ret2=9723, ret5=9723, temp=9723, x={14:0}] [L52] return 1; - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 5 procedures, 60 locations, 5 error locations. UNSAFE Result, 7.8s OverallTime, 15 OverallIterations, 18 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 806 SDtfs, 126 SDslu, 1865 SDs, 0 SdLazy, 217 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1450 GetRequests, 1413 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=14, 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: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 37 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1875 NumberOfCodeBlocks, 1675 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1573 ConstructedInterpolants, 0 QuantifiedInterpolants, 215843 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2960 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 2925/3080 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 29]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 5 procedures, 60 locations, 5 error locations. SAFE Result, 4.1s OverallTime, 7 OverallIterations, 9 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 382 SDtfs, 75 SDslu, 436 SDs, 0 SdLazy, 134 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 482 GetRequests, 460 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 714 NumberOfCodeBlocks, 641 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 599 ConstructedInterpolants, 65 QuantifiedInterpolants, 109035 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1161 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 420/448 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: rangesumErr0EnsuresViolation CFG has 5 procedures, 60 locations, 5 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 4]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: init_nondetErr0EnsuresViolation CFG has 5 procedures, 60 locations, 5 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum05_false-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-27_22-58-40-954.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum05_false-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-27_22-58-40-954.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum05_false-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-27_22-58-40-954.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum05_false-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-27_22-58-40-954.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum05_false-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-27_22-58-40-954.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rangesum05_false-unreach-call_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-27_22-58-40-954.csv Received shutdown request...