java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-multidimensional/min-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:46,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:46,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:46,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:46,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:46,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:46,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:46,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:46,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:46,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:46,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:46,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:46,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:46,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:46,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:46,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:46,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:46,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:46,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:46,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:46,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:46,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:46,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:46,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:46,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:46,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:53:46,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:53:46,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:53:46,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:53:46,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:53:46,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:53:46,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:53:46,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:53:46,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:46,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:46,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:46,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:53:46,502 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:46,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:46,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:46,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:46,504 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:46,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:46,505 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:46,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:46,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:46,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:46,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:46,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:46,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:46,506 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:46,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:46,507 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:46,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:46,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:46,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:46,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:46,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:46,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:46,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:46,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:46,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:46,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:46,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:46,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:46,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 19:53:46,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:46,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:46,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:46,814 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:46,815 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:46,815 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/min-3-n-u.c [2019-10-13 19:53:46,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fc722d2/ccd2add77e94410b86b546bb5bc41739/FLAGc67389a62 [2019-10-13 19:53:47,386 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:47,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/min-3-n-u.c [2019-10-13 19:53:47,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fc722d2/ccd2add77e94410b86b546bb5bc41739/FLAGc67389a62 [2019-10-13 19:53:47,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4fc722d2/ccd2add77e94410b86b546bb5bc41739 [2019-10-13 19:53:47,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:47,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:47,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:47,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:47,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:47,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:47" (1/1) ... [2019-10-13 19:53:47,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@92df964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:47, skipping insertion in model container [2019-10-13 19:53:47,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:47" (1/1) ... [2019-10-13 19:53:47,726 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:47,744 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:47,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:47,930 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:48,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:48,061 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:48,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48 WrapperNode [2019-10-13 19:53:48,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:48,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:48,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:48,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:48,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (1/1) ... [2019-10-13 19:53:48,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:48,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:48,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:48,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:48,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (1/1) ... No working directory specified, using /storage/repos/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 [2019-10-13 19:53:48,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:48,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:48,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:48,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:48,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:48,499 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:48,500 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-13 19:53:48,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:48 BoogieIcfgContainer [2019-10-13 19:53:48,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:48,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:48,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:48,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:48,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:47" (1/3) ... [2019-10-13 19:53:48,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574a054f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:48, skipping insertion in model container [2019-10-13 19:53:48,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:48" (2/3) ... [2019-10-13 19:53:48,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574a054f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:48, skipping insertion in model container [2019-10-13 19:53:48,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:48" (3/3) ... [2019-10-13 19:53:48,528 INFO L109 eAbstractionObserver]: Analyzing ICFG min-3-n-u.c [2019-10-13 19:53:48,546 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:48,553 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:48,566 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:48,588 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:48,589 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:48,589 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:48,589 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:48,589 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:48,589 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:48,589 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:48,590 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-13 19:53:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:48,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:48,613 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:48,615 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:48,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:48,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1187401570, now seen corresponding path program 1 times [2019-10-13 19:53:48,631 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:48,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574401158] [2019-10-13 19:53:48,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:48,632 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:48,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:48,714 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:48,714 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793565374] [2019-10-13 19:53:48,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:48,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:53:48,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:48,803 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:48,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574401158] [2019-10-13 19:53:48,833 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:48,834 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793565374] [2019-10-13 19:53:48,837 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:48,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-13 19:53:48,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907167934] [2019-10-13 19:53:48,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:48,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:48,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:48,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:48,866 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-10-13 19:53:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:48,911 INFO L93 Difference]: Finished difference Result 70 states and 109 transitions. [2019-10-13 19:53:48,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:48,913 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-13 19:53:48,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:48,927 INFO L225 Difference]: With dead ends: 70 [2019-10-13 19:53:48,927 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 19:53:48,935 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 19:53:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-10-13 19:53:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-13 19:53:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2019-10-13 19:53:49,002 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 17 [2019-10-13 19:53:49,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:49,004 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2019-10-13 19:53:49,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:49,004 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2019-10-13 19:53:49,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:49,007 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:49,007 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:49,210 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:49,211 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:49,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:49,211 INFO L82 PathProgramCache]: Analyzing trace with hash -738632508, now seen corresponding path program 1 times [2019-10-13 19:53:49,212 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:49,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824360349] [2019-10-13 19:53:49,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:49,213 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:49,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:49,222 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:49,223 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [139651627] [2019-10-13 19:53:49,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/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 [2019-10-13 19:53:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:49,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:49,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:49,326 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:49,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824360349] [2019-10-13 19:53:49,356 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:49,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139651627] [2019-10-13 19:53:49,356 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:49,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 19:53:49,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673107485] [2019-10-13 19:53:49,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:53:49,362 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:49,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:53:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:53:49,364 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand 4 states. [2019-10-13 19:53:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:49,445 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2019-10-13 19:53:49,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:53:49,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-13 19:53:49,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:49,448 INFO L225 Difference]: With dead ends: 61 [2019-10-13 19:53:49,448 INFO L226 Difference]: Without dead ends: 39 [2019-10-13 19:53:49,449 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:53:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-13 19:53:49,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-13 19:53:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-13 19:53:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-10-13 19:53:49,458 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 17 [2019-10-13 19:53:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:49,458 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-10-13 19:53:49,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:53:49,459 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2019-10-13 19:53:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 19:53:49,460 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:49,461 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:49,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:49,662 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:49,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:49,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1720365924, now seen corresponding path program 1 times [2019-10-13 19:53:49,663 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:49,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121956592] [2019-10-13 19:53:49,664 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:49,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:49,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:49,673 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:49,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774720591] [2019-10-13 19:53:49,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:49,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:49,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:49,749 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 19:53:49,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121956592] [2019-10-13 19:53:49,775 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:49,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774720591] [2019-10-13 19:53:49,776 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:49,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 19:53:49,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518629062] [2019-10-13 19:53:49,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:49,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:49,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:49,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:49,778 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 6 states. [2019-10-13 19:53:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:49,964 INFO L93 Difference]: Finished difference Result 91 states and 126 transitions. [2019-10-13 19:53:49,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:49,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-13 19:53:49,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:49,967 INFO L225 Difference]: With dead ends: 91 [2019-10-13 19:53:49,968 INFO L226 Difference]: Without dead ends: 62 [2019-10-13 19:53:49,968 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:53:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-10-13 19:53:49,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2019-10-13 19:53:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-13 19:53:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2019-10-13 19:53:49,984 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 23 [2019-10-13 19:53:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:49,984 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2019-10-13 19:53:49,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2019-10-13 19:53:49,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-13 19:53:49,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:49,986 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:50,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:50,197 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:50,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:50,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1428053852, now seen corresponding path program 1 times [2019-10-13 19:53:50,199 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:50,199 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400848079] [2019-10-13 19:53:50,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:50,199 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:50,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:50,209 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:50,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140090746] [2019-10-13 19:53:50,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:50,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:50,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:53:50,316 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 19:53:50,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400848079] [2019-10-13 19:53:50,342 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:50,343 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140090746] [2019-10-13 19:53:50,343 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:50,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 19:53:50,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860907161] [2019-10-13 19:53:50,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:50,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:50,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:50,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:50,345 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand 6 states. [2019-10-13 19:53:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:50,465 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-10-13 19:53:50,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:50,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-13 19:53:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:50,467 INFO L225 Difference]: With dead ends: 136 [2019-10-13 19:53:50,467 INFO L226 Difference]: Without dead ends: 86 [2019-10-13 19:53:50,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:53:50,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-13 19:53:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2019-10-13 19:53:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-10-13 19:53:50,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2019-10-13 19:53:50,490 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 35 [2019-10-13 19:53:50,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:50,490 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2019-10-13 19:53:50,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2019-10-13 19:53:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 19:53:50,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:50,494 INFO L380 BasicCegarLoop]: trace histogram [8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:50,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:50,698 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:50,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:50,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1739527204, now seen corresponding path program 1 times [2019-10-13 19:53:50,699 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:50,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509663147] [2019-10-13 19:53:50,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:50,700 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:50,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:50,710 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:50,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50678286] [2019-10-13 19:53:50,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:50,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:50,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:53:50,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-13 19:53:50,817 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-13 19:53:50,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509663147] [2019-10-13 19:53:50,861 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:50,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50678286] [2019-10-13 19:53:50,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2004401186] [2019-10-13 19:53:50,868 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 44 [2019-10-13 19:53:50,917 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:50,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:50,972 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:50,973 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 18 root evaluator evaluations with a maximum evaluation depth of 0. Performed 18 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 24 variables. [2019-10-13 19:53:50,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:50,977 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:51,016 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:51,016 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:51,018 INFO L553 sIntCurrentIteration]: We unified 42 AI predicates to 42 [2019-10-13 19:53:51,018 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:51,019 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:53:51,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 10 [2019-10-13 19:53:51,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023891888] [2019-10-13 19:53:51,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:51,020 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:51,021 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:51,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:51,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:51,021 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand 2 states. [2019-10-13 19:53:51,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:51,025 INFO L93 Difference]: Finished difference Result 83 states and 104 transitions. [2019-10-13 19:53:51,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:51,025 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 43 [2019-10-13 19:53:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:51,026 INFO L225 Difference]: With dead ends: 83 [2019-10-13 19:53:51,026 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:51,027 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:51,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:51,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:51,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2019-10-13 19:53:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:51,028 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:51,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:51,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:51,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:51,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:51,276 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:51,277 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:51,277 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:51,277 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:51,277 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:51,277 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:51,277 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:51,277 INFO L443 ceAbstractionStarter]: For program point L68-3(lines 68 71) no Hoare annotation was computed. [2019-10-13 19:53:51,277 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 77) no Hoare annotation was computed. [2019-10-13 19:53:51,278 INFO L439 ceAbstractionStarter]: At program point L69(line 69) the Hoare annotation is: false [2019-10-13 19:53:51,278 INFO L443 ceAbstractionStarter]: For program point L69-1(line 69) no Hoare annotation was computed. [2019-10-13 19:53:51,278 INFO L439 ceAbstractionStarter]: At program point L28-2(lines 28 31) the Hoare annotation is: false [2019-10-13 19:53:51,278 INFO L443 ceAbstractionStarter]: For program point L28-3(lines 28 31) no Hoare annotation was computed. [2019-10-13 19:53:51,278 INFO L439 ceAbstractionStarter]: At program point L45-2(lines 45 53) the Hoare annotation is: false [2019-10-13 19:53:51,278 INFO L443 ceAbstractionStarter]: For program point L45-3(lines 45 53) no Hoare annotation was computed. [2019-10-13 19:53:51,278 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 77) no Hoare annotation was computed. [2019-10-13 19:53:51,279 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 77) the Hoare annotation is: true [2019-10-13 19:53:51,279 INFO L439 ceAbstractionStarter]: At program point L63-2(lines 63 75) the Hoare annotation is: false [2019-10-13 19:53:51,279 INFO L443 ceAbstractionStarter]: For program point L63-3(lines 63 75) no Hoare annotation was computed. [2019-10-13 19:53:51,279 INFO L439 ceAbstractionStarter]: At program point L47-2(lines 47 51) the Hoare annotation is: false [2019-10-13 19:53:51,279 INFO L443 ceAbstractionStarter]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2019-10-13 19:53:51,279 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 35) the Hoare annotation is: false [2019-10-13 19:53:51,279 INFO L443 ceAbstractionStarter]: For program point L23-3(lines 23 35) no Hoare annotation was computed. [2019-10-13 19:53:51,279 INFO L443 ceAbstractionStarter]: For program point L48(lines 48 49) no Hoare annotation was computed. [2019-10-13 19:53:51,280 INFO L443 ceAbstractionStarter]: For program point L48-2(lines 48 49) no Hoare annotation was computed. [2019-10-13 19:53:51,280 INFO L439 ceAbstractionStarter]: At program point L66-2(lines 66 73) the Hoare annotation is: false [2019-10-13 19:53:51,280 INFO L443 ceAbstractionStarter]: For program point L66-3(lines 66 73) no Hoare annotation was computed. [2019-10-13 19:53:51,280 INFO L439 ceAbstractionStarter]: At program point L42-2(lines 42 55) the Hoare annotation is: false [2019-10-13 19:53:51,280 INFO L443 ceAbstractionStarter]: For program point L42-3(lines 42 55) no Hoare annotation was computed. [2019-10-13 19:53:51,280 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 26 33) the Hoare annotation is: false [2019-10-13 19:53:51,280 INFO L443 ceAbstractionStarter]: For program point L26-3(lines 26 33) no Hoare annotation was computed. [2019-10-13 19:53:51,280 INFO L439 ceAbstractionStarter]: At program point L68-2(lines 68 71) the Hoare annotation is: false [2019-10-13 19:53:51,280 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 19:53:51,280 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 19:53:51,281 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:53:51,281 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 19:53:51,281 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 19:53:51,281 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:53:51,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:51 BoogieIcfgContainer [2019-10-13 19:53:51,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:51,291 INFO L168 Benchmark]: Toolchain (without parser) took 3580.23 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 101.6 MB in the beginning and 120.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 70.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:51,291 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 19:53:51,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.80 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 180.0 MB in the end (delta: -78.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:51,293 INFO L168 Benchmark]: Boogie Preprocessor took 44.39 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 177.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:51,294 INFO L168 Benchmark]: RCFGBuilder took 393.04 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 159.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:51,295 INFO L168 Benchmark]: TraceAbstraction took 2785.25 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 159.0 MB in the beginning and 120.7 MB in the end (delta: 38.3 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:51,299 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory is still 119.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 352.80 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.2 MB in the beginning and 180.0 MB in the end (delta: -78.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.39 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 177.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.04 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 159.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2785.25 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 159.0 MB in the beginning and 120.7 MB in the end (delta: 38.3 MB). Peak memory consumption was 70.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 8, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 150 SDtfs, 216 SDslu, 126 SDs, 0 SdLazy, 85 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 15 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 10280 SizeOfPredicates, 8 NumberOfNonLiveVariables, 559 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 248/254 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 110, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9464285714285714, AVG_VARS_REMOVED_DURING_WEAKENING: 0.7857142857142857, AVG_WEAKENED_CONJUNCTS: 0.14285714285714285, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...