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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/reducercommutativity/sum.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:25:34,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:25:34,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:25:34,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:25:34,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:25:34,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:25:34,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:25:34,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:25:34,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:25:34,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:25:34,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:25:34,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:25:34,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:25:34,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:25:34,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:25:34,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:25:34,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:25:34,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:25:34,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:25:34,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:25:34,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:25:34,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:25:34,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:25:34,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:25:34,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:25:34,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:25:34,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:25:34,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:25:34,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:25:34,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:25:34,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:25:34,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:25:34,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:25:34,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:25:34,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:25:34,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:25:34,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:25:34,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:25:34,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:25:34,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:25:34,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:25:34,268 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 [2019-10-15 03:25:34,281 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:25:34,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:25:34,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:25:34,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:25:34,283 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:25:34,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:25:34,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:25:34,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:25:34,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:25:34,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:25:34,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:25:34,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:25:34,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:25:34,285 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:25:34,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:25:34,285 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:25:34,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:25:34,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:25:34,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:25:34,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:25:34,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:25:34,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:25:34,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:25:34,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:25:34,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:25:34,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:25:34,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:25:34,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:25:34,288 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:25:34,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:25:34,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:25:34,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:25:34,595 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:25:34,596 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:25:34,596 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum.i [2019-10-15 03:25:34,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1454b85d0/02ecc981acf24786baa4b447820617a8/FLAGce0089f08 [2019-10-15 03:25:35,093 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:25:35,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum.i [2019-10-15 03:25:35,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1454b85d0/02ecc981acf24786baa4b447820617a8/FLAGce0089f08 [2019-10-15 03:25:35,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1454b85d0/02ecc981acf24786baa4b447820617a8 [2019-10-15 03:25:35,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:25:35,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:25:35,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:25:35,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:25:35,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:25:35,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2a3789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35, skipping insertion in model container [2019-10-15 03:25:35,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,504 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:25:35,522 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:25:35,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:25:35,746 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:25:35,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:25:35,781 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:25:35,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35 WrapperNode [2019-10-15 03:25:35,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:25:35,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:25:35,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:25:35,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:25:35,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (1/1) ... [2019-10-15 03:25:35,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:25:35,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:25:35,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:25:35,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:25:35,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (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 [2019-10-15 03:25:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:25:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:25:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-10-15 03:25:35,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:25:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:25:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:25:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-10-15 03:25:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:25:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:25:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:25:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:25:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:25:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:25:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:25:36,316 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:25:36,316 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 03:25:36,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:25:36 BoogieIcfgContainer [2019-10-15 03:25:36,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:25:36,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:25:36,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:25:36,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:25:36,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:25:35" (1/3) ... [2019-10-15 03:25:36,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630c9bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:25:36, skipping insertion in model container [2019-10-15 03:25:36,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:25:35" (2/3) ... [2019-10-15 03:25:36,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630c9bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:25:36, skipping insertion in model container [2019-10-15 03:25:36,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:25:36" (3/3) ... [2019-10-15 03:25:36,325 INFO L109 eAbstractionObserver]: Analyzing ICFG sum.i [2019-10-15 03:25:36,335 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:25:36,342 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:25:36,353 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:25:36,376 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:25:36,376 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:25:36,376 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:25:36,376 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:25:36,376 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:25:36,377 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:25:36,377 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:25:36,377 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:25:36,391 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-15 03:25:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-15 03:25:36,396 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:25:36,397 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:25:36,399 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:25:36,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:25:36,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1602370502, now seen corresponding path program 1 times [2019-10-15 03:25:36,410 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:25:36,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48579735] [2019-10-15 03:25:36,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:25:36,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:25:36,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:25:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:25:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:25:36,673 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48579735] [2019-10-15 03:25:36,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415359475] [2019-10-15 03:25:36,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-10-15 03:25:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:25:36,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:25:36,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:25:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:25:36,829 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:25:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 03:25:36,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:25:36,919 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2019-10-15 03:25:36,919 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448145279] [2019-10-15 03:25:36,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:25:36,927 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:25:36,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:25:36,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:25:36,945 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-10-15 03:25:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:25:37,036 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2019-10-15 03:25:37,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:25:37,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-10-15 03:25:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:25:37,049 INFO L225 Difference]: With dead ends: 46 [2019-10-15 03:25:37,049 INFO L226 Difference]: Without dead ends: 20 [2019-10-15 03:25:37,053 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:25:37,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-15 03:25:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-15 03:25:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-15 03:25:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-10-15 03:25:37,097 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 24 [2019-10-15 03:25:37,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:25:37,097 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-10-15 03:25:37,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:25:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-10-15 03:25:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 03:25:37,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:25:37,100 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:25:37,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:25:37,305 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:25:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:25:37,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1904412546, now seen corresponding path program 1 times [2019-10-15 03:25:37,307 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:25:37,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867190749] [2019-10-15 03:25:37,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:25:37,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:25:37,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:25:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:25:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-15 03:25:37,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867190749] [2019-10-15 03:25:37,458 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:25:37,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:25:37,458 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300281503] [2019-10-15 03:25:37,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:25:37,460 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:25:37,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:25:37,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:25:37,461 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2019-10-15 03:25:37,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:25:37,503 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-10-15 03:25:37,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:25:37,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-15 03:25:37,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:25:37,505 INFO L225 Difference]: With dead ends: 30 [2019-10-15 03:25:37,505 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 03:25:37,506 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:25:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 03:25:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-15 03:25:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:25:37,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-10-15 03:25:37,513 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 27 [2019-10-15 03:25:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:25:37,515 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-10-15 03:25:37,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:25:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2019-10-15 03:25:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 03:25:37,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:25:37,516 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:25:37,517 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:25:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:25:37,518 INFO L82 PathProgramCache]: Analyzing trace with hash 852534480, now seen corresponding path program 1 times [2019-10-15 03:25:37,518 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:25:37,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020217532] [2019-10-15 03:25:37,519 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:25:37,519 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:25:37,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:25:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:25:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:25:37,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020217532] [2019-10-15 03:25:37,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387741208] [2019-10-15 03:25:37,644 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 [2019-10-15 03:25:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:25:37,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 03:25:37,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:25:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:25:37,757 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:25:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:25:37,833 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1600190794] [2019-10-15 03:25:37,858 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-15 03:25:37,858 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:25:37,864 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:25:37,872 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:25:37,872 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:25:38,048 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 03:25:39,844 INFO L199 IcfgInterpreter]: Interpreting procedure sum with input of size 1 for LOIs [2019-10-15 03:25:39,892 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-15 03:25:39,898 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:25:40,554 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:25:40,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 12] total 21 [2019-10-15 03:25:40,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693064501] [2019-10-15 03:25:40,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-15 03:25:40,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:25:40,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-15 03:25:40,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2019-10-15 03:25:40,560 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 22 states. [2019-10-15 03:25:41,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:25:41,169 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-10-15 03:25:41,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 03:25:41,169 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2019-10-15 03:25:41,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:25:41,170 INFO L225 Difference]: With dead ends: 36 [2019-10-15 03:25:41,171 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 03:25:41,171 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2019-10-15 03:25:41,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 03:25:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-15 03:25:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 03:25:41,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-10-15 03:25:41,178 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 28 [2019-10-15 03:25:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:25:41,178 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-10-15 03:25:41,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-15 03:25:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-10-15 03:25:41,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-15 03:25:41,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:25:41,180 INFO L380 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:25:41,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:25:41,383 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:25:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:25:41,384 INFO L82 PathProgramCache]: Analyzing trace with hash -808289344, now seen corresponding path program 2 times [2019-10-15 03:25:41,384 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:25:41,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448648108] [2019-10-15 03:25:41,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:25:41,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:25:41,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:25:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:25:48,602 WARN L191 SmtUtils]: Spent 6.33 s on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2019-10-15 03:25:48,736 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2019-10-15 03:25:54,911 WARN L191 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2019-10-15 03:25:55,376 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 26 [2019-10-15 03:25:57,583 WARN L191 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 73 DAG size of output: 30 [2019-10-15 03:25:57,761 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 29 [2019-10-15 03:25:57,964 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 28 [2019-10-15 03:25:58,542 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2019-10-15 03:25:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:25:58,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448648108] [2019-10-15 03:25:58,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161303105] [2019-10-15 03:25:58,644 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-15 03:25:58,773 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-15 03:25:58,774 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 03:25:58,777 WARN L254 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 92 conjunts are in the unsatisfiable core [2019-10-15 03:25:58,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:26:00,370 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2019-10-15 03:26:01,001 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 129 [2019-10-15 03:26:02,737 WARN L191 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 175 DAG size of output: 171 [2019-10-15 03:26:04,040 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 165 DAG size of output: 161 [2019-10-15 03:26:04,544 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2019-10-15 03:26:05,728 WARN L191 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 144 DAG size of output: 140 [2019-10-15 03:26:06,465 WARN L191 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2019-10-15 03:26:06,796 WARN L191 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2019-10-15 03:26:07,303 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2019-10-15 03:26:08,279 WARN L191 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 131 [2019-10-15 03:26:08,639 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2019-10-15 03:26:09,512 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 58 [2019-10-15 03:26:09,904 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2019-10-15 03:26:10,257 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2019-10-15 03:26:10,707 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47