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/diff-3-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:40,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:40,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:40,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:40,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:40,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:40,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:40,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:40,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:40,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:40,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:40,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:40,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:40,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:40,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:40,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:40,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:40,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:40,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:40,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:40,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:40,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:40,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:40,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:40,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:40,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:53:40,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:53:40,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:53:40,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:53:40,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:53:40,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:53:40,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:53:40,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:53:40,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:40,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:40,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:40,317 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 19:53:40,342 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:40,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:40,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:40,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:40,344 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:40,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:40,345 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:40,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:40,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:40,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:40,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:40,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:40,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:40,348 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:40,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:40,348 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:40,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:40,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:40,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:40,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:40,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:40,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:40,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:40,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:40,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:40,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:40,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:40,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:40,351 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 19:53:40,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:40,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:40,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:40,659 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:40,660 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:40,660 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/diff-3-n-u.c [2019-10-13 19:53:40,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9daa42726/bcf088ec947144e2aedc821ec94444bf/FLAGdbd318263 [2019-10-13 19:53:41,192 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:41,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/diff-3-n-u.c [2019-10-13 19:53:41,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9daa42726/bcf088ec947144e2aedc821ec94444bf/FLAGdbd318263 [2019-10-13 19:53:41,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9daa42726/bcf088ec947144e2aedc821ec94444bf [2019-10-13 19:53:41,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:41,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:41,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:41,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:41,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:41,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f41ddf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41, skipping insertion in model container [2019-10-13 19:53:41,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,563 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:41,584 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:41,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:41,781 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:41,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:41,911 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:41,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41 WrapperNode [2019-10-13 19:53:41,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:41,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:41,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:41,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:41,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (1/1) ... [2019-10-13 19:53:41,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:41,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:41,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:41,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:41,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (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 19:53:42,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:42,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:42,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:42,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 19:53:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:42,377 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:42,377 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-13 19:53:42,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:42 BoogieIcfgContainer [2019-10-13 19:53:42,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:42,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:42,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:42,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:42,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:41" (1/3) ... [2019-10-13 19:53:42,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@974ebf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:42, skipping insertion in model container [2019-10-13 19:53:42,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:41" (2/3) ... [2019-10-13 19:53:42,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@974ebf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:42, skipping insertion in model container [2019-10-13 19:53:42,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:42" (3/3) ... [2019-10-13 19:53:42,388 INFO L109 eAbstractionObserver]: Analyzing ICFG diff-3-n-u.c [2019-10-13 19:53:42,400 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:42,408 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:42,417 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:42,443 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:42,443 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:42,443 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:42,444 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:42,444 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:42,444 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:42,444 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:42,444 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-10-13 19:53:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:42,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:42,470 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 19:53:42,472 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:42,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:42,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1773460249, now seen corresponding path program 1 times [2019-10-13 19:53:42,484 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:42,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584798096] [2019-10-13 19:53:42,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:42,485 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:42,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:42,567 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:42,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137653713] [2019-10-13 19:53:42,568 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 19:53:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:42,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 19:53:42,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:42,666 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 19:53:42,667 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:42,691 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 19:53:42,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584798096] [2019-10-13 19:53:42,692 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:42,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137653713] [2019-10-13 19:53:42,694 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:42,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-13 19:53:42,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607829003] [2019-10-13 19:53:42,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:42,702 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:42,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:42,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:42,722 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-10-13 19:53:42,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:42,756 INFO L93 Difference]: Finished difference Result 66 states and 103 transitions. [2019-10-13 19:53:42,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:42,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-10-13 19:53:42,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:42,770 INFO L225 Difference]: With dead ends: 66 [2019-10-13 19:53:42,771 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 19:53:42,778 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 19:53:42,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 19:53:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-13 19:53:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-13 19:53:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2019-10-13 19:53:42,843 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 17 [2019-10-13 19:53:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:42,844 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2019-10-13 19:53:42,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2019-10-13 19:53:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 19:53:42,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:42,846 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 19:53:43,051 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:43,051 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:43,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1763514787, now seen corresponding path program 1 times [2019-10-13 19:53:43,053 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:43,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545478170] [2019-10-13 19:53:43,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:43,064 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:43,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187804150] [2019-10-13 19:53:43,064 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 19:53:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:43,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:43,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:43,165 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 19:53:43,166 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:43,184 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 19:53:43,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545478170] [2019-10-13 19:53:43,185 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:43,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187804150] [2019-10-13 19:53:43,185 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:43,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-13 19:53:43,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510560664] [2019-10-13 19:53:43,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:53:43,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:43,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:53:43,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:53:43,189 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 4 states. [2019-10-13 19:53:43,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:43,270 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2019-10-13 19:53:43,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:53:43,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-13 19:53:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:43,272 INFO L225 Difference]: With dead ends: 57 [2019-10-13 19:53:43,272 INFO L226 Difference]: Without dead ends: 37 [2019-10-13 19:53:43,273 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 19:53:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-13 19:53:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-13 19:53:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-13 19:53:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-10-13 19:53:43,282 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 17 [2019-10-13 19:53:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:43,283 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-10-13 19:53:43,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:53:43,283 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2019-10-13 19:53:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 19:53:43,284 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:43,284 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 19:53:43,488 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:43,494 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash 340674109, now seen corresponding path program 1 times [2019-10-13 19:53:43,495 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:43,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756744572] [2019-10-13 19:53:43,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:43,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:43,509 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:43,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227396194] [2019-10-13 19:53:43,509 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 19:53:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:43,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:43,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:43,606 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 19:53:43,606 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:43,634 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 19:53:43,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756744572] [2019-10-13 19:53:43,635 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:43,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227396194] [2019-10-13 19:53:43,635 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:43,635 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 19:53:43,636 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129295415] [2019-10-13 19:53:43,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:43,637 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:43,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:43,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:43,638 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 6 states. [2019-10-13 19:53:43,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:43,800 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2019-10-13 19:53:43,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:43,801 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-10-13 19:53:43,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:43,804 INFO L225 Difference]: With dead ends: 85 [2019-10-13 19:53:43,804 INFO L226 Difference]: Without dead ends: 58 [2019-10-13 19:53:43,805 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 19:53:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2019-10-13 19:53:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2019-10-13 19:53:43,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-13 19:53:43,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2019-10-13 19:53:43,818 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 23 [2019-10-13 19:53:43,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:43,818 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2019-10-13 19:53:43,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:43,819 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2019-10-13 19:53:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-13 19:53:43,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:43,820 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 19:53:44,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:44,032 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:44,033 INFO L82 PathProgramCache]: Analyzing trace with hash 964261373, now seen corresponding path program 1 times [2019-10-13 19:53:44,033 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:44,034 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016864769] [2019-10-13 19:53:44,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:44,034 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:44,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:44,051 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:44,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362598193] [2019-10-13 19:53:44,053 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 19:53:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:44,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:44,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:44,140 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 19:53:44,141 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:44,176 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 19:53:44,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016864769] [2019-10-13 19:53:44,177 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:44,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362598193] [2019-10-13 19:53:44,177 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:44,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-13 19:53:44,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128923197] [2019-10-13 19:53:44,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:53:44,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:44,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:53:44,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:53:44,182 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand 6 states. [2019-10-13 19:53:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:44,300 INFO L93 Difference]: Finished difference Result 124 states and 172 transitions. [2019-10-13 19:53:44,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:53:44,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-13 19:53:44,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:44,302 INFO L225 Difference]: With dead ends: 124 [2019-10-13 19:53:44,302 INFO L226 Difference]: Without dead ends: 78 [2019-10-13 19:53:44,303 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 19:53:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-13 19:53:44,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2019-10-13 19:53:44,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-10-13 19:53:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2019-10-13 19:53:44,318 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 35 [2019-10-13 19:53:44,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:44,318 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2019-10-13 19:53:44,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:53:44,318 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2019-10-13 19:53:44,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-13 19:53:44,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:44,320 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 19:53:44,523 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:44,524 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:44,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:44,524 INFO L82 PathProgramCache]: Analyzing trace with hash -331284355, now seen corresponding path program 1 times [2019-10-13 19:53:44,525 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:44,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794734279] [2019-10-13 19:53:44,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:44,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:44,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:44,535 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 19:53:44,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106324299] [2019-10-13 19:53:44,535 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 19:53:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:44,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 19:53:44,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:44,680 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 19:53:44,680 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:44,726 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 19:53:44,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794734279] [2019-10-13 19:53:44,727 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 19:53:44,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106324299] [2019-10-13 19:53:44,728 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1051247454] [2019-10-13 19:53:44,734 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 44 [2019-10-13 19:53:44,769 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:44,770 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:44,828 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:44,830 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 29 variables. [2019-10-13 19:53:44,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:44,835 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:44,878 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:44,879 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:44,881 INFO L553 sIntCurrentIteration]: We unified 42 AI predicates to 42 [2019-10-13 19:53:44,881 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:44,882 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 19:53:44,882 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6, 6] total 10 [2019-10-13 19:53:44,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389580602] [2019-10-13 19:53:44,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:44,884 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:44,884 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:44,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:44,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:44,885 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 2 states. [2019-10-13 19:53:44,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:44,889 INFO L93 Difference]: Finished difference Result 75 states and 92 transitions. [2019-10-13 19:53:44,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:44,889 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 43 [2019-10-13 19:53:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:44,889 INFO L225 Difference]: With dead ends: 75 [2019-10-13 19:53:44,889 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:44,890 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 19:53:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:44,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:44,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2019-10-13 19:53:44,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:44,891 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:44,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:44,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:45,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:45,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:45,136 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:45,137 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:45,137 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:45,137 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:45,137 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:45,137 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:45,137 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:45,138 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 80) no Hoare annotation was computed. [2019-10-13 19:53:45,138 INFO L439 ceAbstractionStarter]: At program point L69-2(lines 69 76) the Hoare annotation is: false [2019-10-13 19:53:45,138 INFO L443 ceAbstractionStarter]: For program point L69-3(lines 69 76) no Hoare annotation was computed. [2019-10-13 19:53:45,138 INFO L439 ceAbstractionStarter]: At program point L29-2(lines 29 37) the Hoare annotation is: false [2019-10-13 19:53:45,138 INFO L443 ceAbstractionStarter]: For program point L29-3(lines 29 37) no Hoare annotation was computed. [2019-10-13 19:53:45,138 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 80) no Hoare annotation was computed. [2019-10-13 19:53:45,138 INFO L439 ceAbstractionStarter]: At program point L46-2(lines 46 58) the Hoare annotation is: false [2019-10-13 19:53:45,139 INFO L443 ceAbstractionStarter]: For program point L46-3(lines 46 58) no Hoare annotation was computed. [2019-10-13 19:53:45,139 INFO L439 ceAbstractionStarter]: At program point L71-2(lines 71 74) the Hoare annotation is: false [2019-10-13 19:53:45,139 INFO L443 ceAbstractionStarter]: For program point L71-3(lines 71 74) no Hoare annotation was computed. [2019-10-13 19:53:45,139 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 80) the Hoare annotation is: true [2019-10-13 19:53:45,139 INFO L439 ceAbstractionStarter]: At program point L72(line 72) the Hoare annotation is: false [2019-10-13 19:53:45,140 INFO L443 ceAbstractionStarter]: For program point L72-1(line 72) no Hoare annotation was computed. [2019-10-13 19:53:45,140 INFO L439 ceAbstractionStarter]: At program point L31-2(lines 31 35) the Hoare annotation is: false [2019-10-13 19:53:45,140 INFO L443 ceAbstractionStarter]: For program point L31-3(lines 31 35) no Hoare annotation was computed. [2019-10-13 19:53:45,140 INFO L439 ceAbstractionStarter]: At program point L49-2(lines 49 56) the Hoare annotation is: false [2019-10-13 19:53:45,140 INFO L443 ceAbstractionStarter]: For program point L49-3(lines 49 56) no Hoare annotation was computed. [2019-10-13 19:53:45,140 INFO L439 ceAbstractionStarter]: At program point L66-2(lines 66 78) the Hoare annotation is: false [2019-10-13 19:53:45,140 INFO L443 ceAbstractionStarter]: For program point L66-3(lines 66 78) no Hoare annotation was computed. [2019-10-13 19:53:45,141 INFO L439 ceAbstractionStarter]: At program point L26-2(lines 26 39) the Hoare annotation is: false [2019-10-13 19:53:45,141 INFO L443 ceAbstractionStarter]: For program point L26-3(lines 26 39) no Hoare annotation was computed. [2019-10-13 19:53:45,141 INFO L439 ceAbstractionStarter]: At program point L51-2(lines 51 54) the Hoare annotation is: false [2019-10-13 19:53:45,141 INFO L443 ceAbstractionStarter]: For program point L51-3(lines 51 54) no Hoare annotation was computed. [2019-10-13 19:53:45,142 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-13 19:53:45,142 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:53:45,142 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-13 19:53:45,142 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-13 19:53:45,142 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-13 19:53:45,143 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-13 19:53:45,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:45 BoogieIcfgContainer [2019-10-13 19:53:45,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:45,160 INFO L168 Benchmark]: Toolchain (without parser) took 3611.88 ms. Allocated memory was 143.7 MB in the beginning and 231.2 MB in the end (delta: 87.6 MB). Free memory was 101.8 MB in the beginning and 117.0 MB in the end (delta: -15.2 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:45,165 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.7 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:45,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.75 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 179.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:45,167 INFO L168 Benchmark]: Boogie Preprocessor took 51.93 ms. Allocated memory is still 200.8 MB. Free memory was 179.0 MB in the beginning and 177.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:45,168 INFO L168 Benchmark]: RCFGBuilder took 413.46 ms. Allocated memory is still 200.8 MB. Free memory was 176.9 MB in the beginning and 158.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:45,169 INFO L168 Benchmark]: TraceAbstraction took 2775.85 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 157.3 MB in the beginning and 117.0 MB in the end (delta: 40.3 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:45,177 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 143.7 MB. Free memory was 120.1 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.75 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 179.0 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.93 ms. Allocated memory is still 200.8 MB. Free memory was 179.0 MB in the beginning and 177.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.46 ms. Allocated memory is still 200.8 MB. Free memory was 176.9 MB in the beginning and 158.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2775.85 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 157.3 MB in the beginning and 117.0 MB in the end (delta: 40.3 MB). Peak memory consumption was 70.7 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: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 8, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 142 SDtfs, 159 SDslu, 126 SDs, 0 SdLazy, 80 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=75occurred 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, 613 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 248/254 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 101, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9285714285714286, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8571428571428571, 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...