/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:11:14,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:11:14,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:11:14,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:11:14,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:11:14,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:11:14,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:11:14,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:11:14,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:11:14,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:11:14,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:11:14,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:11:14,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:11:14,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:11:14,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:11:14,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:11:14,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:11:14,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:11:14,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:11:14,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:11:14,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:11:14,343 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:11:14,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:11:14,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:11:14,344 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:11:14,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:11:14,344 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:11:14,344 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:11:14,345 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:11:14,345 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:11:14,345 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:11:14,345 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:11:14,345 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:11:14,346 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:11:14,346 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:11:14,346 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:11:14,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:11:14,347 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:11:14,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:11:14,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:11:14,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:11:14,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:11:14,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:11:14,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:11:14,348 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:11:14,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:11:14,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:11:14,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:11:14,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:11:14,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:11:14,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:11:14,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:11:14,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:11:14,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:11:14,350 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:11:14,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:11:14,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:11:14,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:11:14,351 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:11:14,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:11:14,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:11:14,634 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:11:14,636 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:11:14,637 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:11:14,637 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-11-24 04:11:14,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc806c57/f986d379996e40209201d56e91568378/FLAG8ec9f92af [2019-11-24 04:11:15,270 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:11:15,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_remove_all_reverse.i [2019-11-24 04:11:15,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc806c57/f986d379996e40209201d56e91568378/FLAG8ec9f92af [2019-11-24 04:11:15,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc806c57/f986d379996e40209201d56e91568378 [2019-11-24 04:11:15,618 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:11:15,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:11:15,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:11:15,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:11:15,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:11:15,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:11:15" (1/1) ... [2019-11-24 04:11:15,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552bb10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:15, skipping insertion in model container [2019-11-24 04:11:15,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:11:15" (1/1) ... [2019-11-24 04:11:15,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:11:15,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:11:16,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:11:16,116 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:11:16,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:11:16,233 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:11:16,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16 WrapperNode [2019-11-24 04:11:16,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:11:16,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:11:16,234 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:11:16,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:11:16,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:11:16,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:11:16,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:11:16,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:11:16,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (1/1) ... [2019-11-24 04:11:16,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:11:16,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:11:16,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:11:16,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:11:16,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (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 [2019-11-24 04:11:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 04:11:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 04:11:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:11:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 04:11:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 04:11:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 04:11:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 04:11:16,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:11:16,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:11:16,926 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:11:16,927 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-24 04:11:16,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:11:16 BoogieIcfgContainer [2019-11-24 04:11:16,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:11:16,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:11:16,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:11:16,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:11:16,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:11:15" (1/3) ... [2019-11-24 04:11:16,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4514f8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:11:16, skipping insertion in model container [2019-11-24 04:11:16,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:11:16" (2/3) ... [2019-11-24 04:11:16,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4514f8b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:11:16, skipping insertion in model container [2019-11-24 04:11:16,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:11:16" (3/3) ... [2019-11-24 04:11:16,939 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_remove_all_reverse.i [2019-11-24 04:11:16,949 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:11:16,956 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:11:16,968 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:11:16,993 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:11:16,994 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:11:16,994 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:11:16,994 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:11:16,994 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:11:16,995 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:11:16,995 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:11:16,995 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:11:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-24 04:11:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:11:17,018 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:11:17,019 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:11:17,019 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:11:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:11:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash -472912755, now seen corresponding path program 1 times [2019-11-24 04:11:17,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:11:17,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882734248] [2019-11-24 04:11:17,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:11:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:17,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:11:17,223 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882734248] [2019-11-24 04:11:17,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:11:17,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:11:17,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99716383] [2019-11-24 04:11:17,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:11:17,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:11:17,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:11:17,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:11:17,249 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-11-24 04:11:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:11:17,299 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2019-11-24 04:11:17,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:11:17,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-24 04:11:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:11:17,314 INFO L225 Difference]: With dead ends: 37 [2019-11-24 04:11:17,314 INFO L226 Difference]: Without dead ends: 18 [2019-11-24 04:11:17,322 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:11:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-24 04:11:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-11-24 04:11:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-24 04:11:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-24 04:11:17,365 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 6 [2019-11-24 04:11:17,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:11:17,366 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-24 04:11:17,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:11:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-24 04:11:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:11:17,367 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:11:17,367 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:11:17,367 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:11:17,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:11:17,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1670610626, now seen corresponding path program 1 times [2019-11-24 04:11:17,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:11:17,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565678787] [2019-11-24 04:11:17,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:11:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 04:11:17,468 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565678787] [2019-11-24 04:11:17,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:11:17,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:11:17,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121286853] [2019-11-24 04:11:17,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:11:17,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:11:17,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:11:17,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:11:17,472 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-11-24 04:11:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:11:17,502 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2019-11-24 04:11:17,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:11:17,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-24 04:11:17,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:11:17,503 INFO L225 Difference]: With dead ends: 29 [2019-11-24 04:11:17,503 INFO L226 Difference]: Without dead ends: 26 [2019-11-24 04:11:17,504 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:11:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-24 04:11:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2019-11-24 04:11:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-24 04:11:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-24 04:11:17,515 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 8 [2019-11-24 04:11:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:11:17,515 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-24 04:11:17,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:11:17,517 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-24 04:11:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:11:17,518 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:11:17,518 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:11:17,518 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:11:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:11:17,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1269612192, now seen corresponding path program 1 times [2019-11-24 04:11:17,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:11:17,520 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880180240] [2019-11-24 04:11:17,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:11:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 04:11:17,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880180240] [2019-11-24 04:11:17,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:11:17,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:11:17,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474242689] [2019-11-24 04:11:17,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:11:17,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:11:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:11:17,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:11:17,705 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2019-11-24 04:11:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:11:17,865 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2019-11-24 04:11:17,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:11:17,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-24 04:11:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:11:17,867 INFO L225 Difference]: With dead ends: 30 [2019-11-24 04:11:17,867 INFO L226 Difference]: Without dead ends: 18 [2019-11-24 04:11:17,868 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:11:17,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-24 04:11:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-24 04:11:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-24 04:11:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2019-11-24 04:11:17,876 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 14 [2019-11-24 04:11:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:11:17,876 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2019-11-24 04:11:17,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:11:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2019-11-24 04:11:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 04:11:17,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:11:17,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:11:17,878 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:11:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:11:17,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1891580457, now seen corresponding path program 1 times [2019-11-24 04:11:17,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:11:17,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383983958] [2019-11-24 04:11:17,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:11:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 04:11:17,991 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383983958] [2019-11-24 04:11:17,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:11:17,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:11:17,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848746964] [2019-11-24 04:11:17,996 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:11:17,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:11:17,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:11:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:11:17,999 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 4 states. [2019-11-24 04:11:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:11:18,075 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-11-24 04:11:18,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:11:18,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-11-24 04:11:18,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:11:18,079 INFO L225 Difference]: With dead ends: 34 [2019-11-24 04:11:18,079 INFO L226 Difference]: Without dead ends: 20 [2019-11-24 04:11:18,080 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:11:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-24 04:11:18,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-24 04:11:18,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-24 04:11:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-24 04:11:18,091 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2019-11-24 04:11:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:11:18,091 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-24 04:11:18,091 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:11:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-24 04:11:18,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 04:11:18,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:11:18,094 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:11:18,095 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:11:18,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:11:18,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1691792060, now seen corresponding path program 1 times [2019-11-24 04:11:18,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:11:18,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377339836] [2019-11-24 04:11:18,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:11:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 04:11:18,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377339836] [2019-11-24 04:11:18,217 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387495546] [2019-11-24 04:11:18,218 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 [2019-11-24 04:11:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:18,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-24 04:11:18,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:11:18,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 04:11:18,365 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:11:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 04:11:18,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [734244845] [2019-11-24 04:11:18,432 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 04:11:18,432 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:11:18,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:11:18,445 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:11:18,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:11:18,660 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:19,056 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:19,371 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:19,666 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:19,824 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:20,195 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2019-11-24 04:11:20,420 WARN L192 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 198 [2019-11-24 04:11:20,524 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:20,551 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:20,573 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:21,120 WARN L192 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2019-11-24 04:11:21,323 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-24 04:11:21,400 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-24 04:11:22,201 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 195 [2019-11-24 04:11:22,511 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 190 [2019-11-24 04:11:22,758 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-11-24 04:11:22,895 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-11-24 04:11:23,668 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-11-24 04:11:24,611 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:24,665 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:11:24,959 WARN L192 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 57 [2019-11-24 04:11:25,846 WARN L192 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 106 [2019-11-24 04:11:26,203 WARN L192 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2019-11-24 04:11:27,027 WARN L192 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 153 [2019-11-24 04:11:27,437 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2019-11-24 04:11:27,755 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 56 [2019-11-24 04:11:27,758 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:11:27,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:11:27,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2019-11-24 04:11:27,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527027588] [2019-11-24 04:11:27,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-24 04:11:27,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:11:27,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-24 04:11:27,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2019-11-24 04:11:27,762 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 10 states. [2019-11-24 04:11:27,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:11:27,799 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-11-24 04:11:27,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:11:27,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-24 04:11:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:11:27,801 INFO L225 Difference]: With dead ends: 34 [2019-11-24 04:11:27,801 INFO L226 Difference]: Without dead ends: 31 [2019-11-24 04:11:27,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2019-11-24 04:11:27,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-24 04:11:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-24 04:11:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-24 04:11:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-11-24 04:11:27,808 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 19 [2019-11-24 04:11:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:11:27,809 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-11-24 04:11:27,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-24 04:11:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-11-24 04:11:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 04:11:27,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:11:27,810 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:11:28,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:11:28,016 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:11:28,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:11:28,017 INFO L82 PathProgramCache]: Analyzing trace with hash 215933310, now seen corresponding path program 2 times [2019-11-24 04:11:28,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:11:28,018 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639125434] [2019-11-24 04:11:28,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:11:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:11:28,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639125434] [2019-11-24 04:11:28,710 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516411377] [2019-11-24 04:11:28,710 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 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 [2019-11-24 04:11:28,916 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-24 04:11:28,916 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-24 04:11:28,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 93 conjunts are in the unsatisfiable core [2019-11-24 04:11:28,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:11:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-24 04:11:29,848 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:11:30,073 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 04:11:30,073 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1125107071] [2019-11-24 04:11:30,075 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 04:11:30,075 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:11:30,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:11:30,076 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:11:30,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:11:30,162 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:30,392 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:30,700 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:30,900 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:31,064 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:31,346 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:31,374 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:31,503 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:32,045 WARN L192 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2019-11-24 04:11:32,274 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 15 [2019-11-24 04:11:32,614 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 15 [2019-11-24 04:11:33,541 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:33,659 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:33,675 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:34,778 WARN L192 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2019-11-24 04:11:34,901 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 269 [2019-11-24 04:11:34,963 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2019-11-24 04:11:35,813 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-11-24 04:11:36,245 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:36,296 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:11:36,662 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 61 [2019-11-24 04:11:36,830 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-11-24 04:11:37,721 WARN L192 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 106 [2019-11-24 04:11:38,128 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2019-11-24 04:11:39,004 WARN L192 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 157 [2019-11-24 04:11:39,630 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-11-24 04:11:40,045 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 60 [2019-11-24 04:11:40,046 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:11:40,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 04:11:40,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 8] total 29 [2019-11-24 04:11:40,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211577570] [2019-11-24 04:11:40,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-24 04:11:40,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:11:40,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-24 04:11:40,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1489, Unknown=0, NotChecked=0, Total=1640 [2019-11-24 04:11:40,050 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 29 states. [2019-11-24 04:11:40,824 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-11-24 04:11:41,016 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-11-24 04:11:41,184 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-11-24 04:11:41,524 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2019-11-24 04:11:41,804 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2019-11-24 04:11:42,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:11:42,080 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2019-11-24 04:11:42,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-24 04:11:42,081 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 30 [2019-11-24 04:11:42,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:11:42,083 INFO L225 Difference]: With dead ends: 61 [2019-11-24 04:11:42,083 INFO L226 Difference]: Without dead ends: 42 [2019-11-24 04:11:42,085 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=387, Invalid=2583, Unknown=0, NotChecked=0, Total=2970 [2019-11-24 04:11:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-24 04:11:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2019-11-24 04:11:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-24 04:11:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-11-24 04:11:42,092 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 30 [2019-11-24 04:11:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:11:42,093 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-11-24 04:11:42,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-24 04:11:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-11-24 04:11:42,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-24 04:11:42,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:11:42,094 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:11:42,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:11:42,295 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:11:42,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:11:42,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1393750749, now seen corresponding path program 1 times [2019-11-24 04:11:42,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:11:42,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882230841] [2019-11-24 04:11:42,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:11:42,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-24 04:11:42,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882230841] [2019-11-24 04:11:42,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283214919] [2019-11-24 04:11:42,388 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 [2019-11-24 04:11:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:11:42,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-24 04:11:42,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:11:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-24 04:11:42,547 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:11:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-24 04:11:42,572 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225987279] [2019-11-24 04:11:42,574 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 04:11:42,574 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:11:42,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:11:42,575 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:11:42,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:11:42,617 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:42,828 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:42,982 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:43,146 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:43,244 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:43,491 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:43,574 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:43,592 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 04:11:43,972 WARN L192 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2019-11-24 04:11:44,109 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 14 [2019-11-24 04:11:44,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 14 [2019-11-24 04:11:45,773 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:11:45,949 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:11:46,130 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:11:46,318 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:11:46,567 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:11:46,745 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:11:47,081 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-11-24 04:11:47,865 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:11:48,147 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:11:48,430 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:11:48,724 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:11:49,008 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:11:49,350 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:11:49,551 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:11:49,827 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:11:50,125 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:11:50,324 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:11:50,519 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:11:50,808 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:11:51,001 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-11-24 04:11:51,252 WARN L192 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2019-11-24 04:11:51,585 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:11:51,952 WARN L192 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2019-11-24 04:11:52,303 WARN L192 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:11:52,589 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2019-11-24 04:11:52,835 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2019-11-24 04:11:53,081 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-11-24 04:11:53,369 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:11:53,656 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:11:53,998 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:11:54,056 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 04:11:54,062 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-11-24 04:11:55,552 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:11:55,886 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:11:56,379 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:11:56,728 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:11:57,124 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:11:57,602 WARN L192 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:11:58,121 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:11:58,337 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:11:58,773 WARN L192 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:11:59,301 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:11:59,664 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:11:59,989 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:12:00,395 WARN L192 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:00,852 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:01,353 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:01,836 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:12:02,290 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:02,718 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:12:03,071 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:12:03,600 WARN L192 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:12:04,210 WARN L192 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:12:04,771 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:12:05,047 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:12:05,291 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:12:05,779 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:06,296 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:06,757 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:12:07,076 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:12:07,263 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 827 DAG size of output: 718 [2019-11-24 04:12:07,653 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 83 [2019-11-24 04:12:08,882 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:10,936 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2019-11-24 04:12:11,457 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-11-24 04:12:11,698 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-11-24 04:12:12,164 WARN L192 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 83 [2019-11-24 04:12:12,876 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-11-24 04:12:13,267 WARN L192 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2019-11-24 04:12:13,974 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2019-11-24 04:12:14,213 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:12:14,599 WARN L192 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 83 [2019-11-24 04:12:15,344 WARN L192 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:12:15,683 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2019-11-24 04:12:16,133 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2019-11-24 04:12:16,712 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2019-11-24 04:12:17,328 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 88 [2019-11-24 04:12:19,364 WARN L192 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 83 [2019-11-24 04:12:20,193 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 94 [2019-11-24 04:12:21,264 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2019-11-24 04:12:21,684 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2019-11-24 04:12:22,790 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:12:23,159 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:12:23,639 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:26,568 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 76 [2019-11-24 04:12:26,943 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2019-11-24 04:12:27,415 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2019-11-24 04:12:27,931 WARN L192 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:30,366 WARN L192 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 3241 DAG size of output: 2153 [2019-11-24 04:12:33,430 WARN L192 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 99 [2019-11-24 04:12:34,318 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:12:34,722 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:34,962 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-11-24 04:12:35,540 WARN L192 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 99 [2019-11-24 04:12:38,062 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2019-11-24 04:12:38,686 WARN L192 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 99 [2019-11-24 04:12:39,744 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2019-11-24 04:12:40,337 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 99 [2019-11-24 04:12:41,794 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 67 [2019-11-24 04:12:42,385 WARN L192 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 99 [2019-11-24 04:12:45,000 WARN L192 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 99 [2019-11-24 04:12:47,026 WARN L192 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 99