/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/reducercommutativity/sum05-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:44:11,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:44:11,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:44:12,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:44:12,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:44:12,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:44:12,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:44:12,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:44:12,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:44:12,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:44:12,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:44:12,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:44:12,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:44:12,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:44:12,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:44:12,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:44:12,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:44:12,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:44:12,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:44:12,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:44:12,085 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 05:44:12,112 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:44:12,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:44:12,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:44:12,114 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:44:12,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:44:12,114 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:44:12,114 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:44:12,115 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:44:12,115 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:44:12,115 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:44:12,115 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:44:12,115 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:44:12,116 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:44:12,116 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:44:12,116 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:44:12,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:44:12,117 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:44:12,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:44:12,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:44:12,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:44:12,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:44:12,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:44:12,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:44:12,118 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:44:12,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:44:12,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:44:12,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:44:12,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:44:12,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:44:12,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:44:12,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:44:12,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:44:12,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:44:12,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:44:12,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:44:12,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:44:12,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:44:12,121 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:44:12,414 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:44:12,428 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:44:12,431 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:44:12,433 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:44:12,433 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:44:12,434 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum05-2.i [2019-11-24 05:44:12,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feae26220/f29f1f2401a444bcaaf9c43ad6460b3c/FLAG1d6800ea3 [2019-11-24 05:44:12,938 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:44:12,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sum05-2.i [2019-11-24 05:44:12,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feae26220/f29f1f2401a444bcaaf9c43ad6460b3c/FLAG1d6800ea3 [2019-11-24 05:44:13,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feae26220/f29f1f2401a444bcaaf9c43ad6460b3c [2019-11-24 05:44:13,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:44:13,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:44:13,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:44:13,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:44:13,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:44:13,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b01c937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13, skipping insertion in model container [2019-11-24 05:44:13,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:44:13,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:44:13,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:44:13,612 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:44:13,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:44:13,652 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:44:13,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13 WrapperNode [2019-11-24 05:44:13,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:44:13,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:44:13,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:44:13,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:44:13,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:44:13,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:44:13,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:44:13,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:44:13,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (1/1) ... [2019-11-24 05:44:13,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:44:13,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:44:13,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:44:13,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:44:13,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (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 05:44:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 05:44:13,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:44:13,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:44:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 05:44:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:44:13,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 05:44:14,361 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:44:14,362 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-24 05:44:14,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:44:14 BoogieIcfgContainer [2019-11-24 05:44:14,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:44:14,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:44:14,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:44:14,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:44:14,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:44:13" (1/3) ... [2019-11-24 05:44:14,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768408da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:44:14, skipping insertion in model container [2019-11-24 05:44:14,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:44:13" (2/3) ... [2019-11-24 05:44:14,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768408da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:44:14, skipping insertion in model container [2019-11-24 05:44:14,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:44:14" (3/3) ... [2019-11-24 05:44:14,371 INFO L109 eAbstractionObserver]: Analyzing ICFG sum05-2.i [2019-11-24 05:44:14,381 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:44:14,388 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 05:44:14,400 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 05:44:14,424 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:44:14,425 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:44:14,425 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:44:14,425 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:44:14,425 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:44:14,426 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:44:14,426 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:44:14,426 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:44:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-24 05:44:14,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:44:14,443 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:14,444 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:14,444 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:14,450 INFO L82 PathProgramCache]: Analyzing trace with hash 652281750, now seen corresponding path program 1 times [2019-11-24 05:44:14,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:14,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942294001] [2019-11-24 05:44:14,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:14,609 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 05:44:14,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942294001] [2019-11-24 05:44:14,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:44:14,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:44:14,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369996769] [2019-11-24 05:44:14,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:44:14,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:44:14,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:44:14,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:44:14,637 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-24 05:44:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:44:14,673 INFO L93 Difference]: Finished difference Result 21 states and 31 transitions. [2019-11-24 05:44:14,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:44:14,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:44:14,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:44:14,685 INFO L225 Difference]: With dead ends: 21 [2019-11-24 05:44:14,686 INFO L226 Difference]: Without dead ends: 10 [2019-11-24 05:44:14,689 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 05:44:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-24 05:44:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-24 05:44:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-24 05:44:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2019-11-24 05:44:14,726 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 14 transitions. Word has length 8 [2019-11-24 05:44:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:44:14,727 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 14 transitions. [2019-11-24 05:44:14,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:44:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 14 transitions. [2019-11-24 05:44:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 05:44:14,728 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:14,728 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:14,729 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:14,729 INFO L82 PathProgramCache]: Analyzing trace with hash 184277197, now seen corresponding path program 1 times [2019-11-24 05:44:14,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:14,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867669228] [2019-11-24 05:44:14,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:44:14,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867669228] [2019-11-24 05:44:14,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156442439] [2019-11-24 05:44:14,794 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 05:44:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:14,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:44:14,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:44:14,887 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 05:44:14,888 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:44:14,902 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 05:44:14,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 05:44:14,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-24 05:44:14,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660337969] [2019-11-24 05:44:14,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:44:14,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:44:14,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:44:14,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:44:14,906 INFO L87 Difference]: Start difference. First operand 10 states and 14 transitions. Second operand 4 states. [2019-11-24 05:44:14,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:44:14,953 INFO L93 Difference]: Finished difference Result 22 states and 34 transitions. [2019-11-24 05:44:14,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:44:14,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-24 05:44:14,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:44:14,954 INFO L225 Difference]: With dead ends: 22 [2019-11-24 05:44:14,954 INFO L226 Difference]: Without dead ends: 16 [2019-11-24 05:44:14,956 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:44:14,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-24 05:44:14,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-24 05:44:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-24 05:44:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-11-24 05:44:14,960 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2019-11-24 05:44:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:44:14,961 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-11-24 05:44:14,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:44:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-11-24 05:44:14,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 05:44:14,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:14,962 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:15,165 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:44:15,166 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:15,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:15,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1226965997, now seen corresponding path program 1 times [2019-11-24 05:44:15,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:15,167 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802280232] [2019-11-24 05:44:15,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-24 05:44:15,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802280232] [2019-11-24 05:44:15,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601384091] [2019-11-24 05:44:15,243 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 [2019-11-24 05:44:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:15,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-24 05:44:15,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:44:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 05:44:15,319 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:44:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 05:44:15,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 05:44:15,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2019-11-24 05:44:15,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043813926] [2019-11-24 05:44:15,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 05:44:15,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:44:15,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 05:44:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:44:15,343 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-11-24 05:44:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:44:15,363 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2019-11-24 05:44:15,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 05:44:15,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-24 05:44:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:44:15,376 INFO L225 Difference]: With dead ends: 24 [2019-11-24 05:44:15,376 INFO L226 Difference]: Without dead ends: 18 [2019-11-24 05:44:15,376 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:44:15,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-24 05:44:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-24 05:44:15,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-24 05:44:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-24 05:44:15,382 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 15 [2019-11-24 05:44:15,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:44:15,382 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-24 05:44:15,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 05:44:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-24 05:44:15,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 05:44:15,383 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:15,383 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:15,588 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:44:15,589 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:15,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:15,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1575042285, now seen corresponding path program 1 times [2019-11-24 05:44:15,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:15,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993958888] [2019-11-24 05:44:15,591 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:44:15,638 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993958888] [2019-11-24 05:44:15,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696044631] [2019-11-24 05:44:15,639 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 05:44:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:15,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 05:44:15,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:44:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:44:15,713 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:44:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:44:15,749 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [829632265] [2019-11-24 05:44:15,805 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:44:15,806 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:44:15,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:44:15,828 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:44:15,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:44:18,037 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 148 [2019-11-24 05:44:19,188 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,215 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,241 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,429 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,454 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,479 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,504 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,529 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,554 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,782 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,807 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,833 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,856 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,877 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,905 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,934 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,964 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:19,990 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,028 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,047 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,069 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,088 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,106 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,125 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,145 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,170 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,193 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,338 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,364 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,386 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,409 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,426 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,444 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,460 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,477 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,494 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,510 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,525 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,620 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,635 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,649 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,661 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:20,813 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 231 [2019-11-24 05:44:20,983 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 231 [2019-11-24 05:44:21,083 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,107 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,282 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,307 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,329 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,352 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,378 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,402 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,428 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,453 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,478 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,506 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,545 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,570 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,743 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,763 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,784 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,916 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:21,934 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,030 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,049 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,067 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,189 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,210 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,228 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,246 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,272 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,291 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,309 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,330 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,354 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,382 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,469 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,486 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,503 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,517 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,696 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 247 [2019-11-24 05:44:22,858 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 248 [2019-11-24 05:44:22,959 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:22,983 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,007 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,030 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,057 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,083 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,263 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,542 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,570 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,594 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,622 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,649 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,672 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,696 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,717 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,740 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,763 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,786 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,885 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:23,976 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,102 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,233 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,250 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,268 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,286 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,384 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,401 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,424 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,440 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,619 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,661 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,678 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,694 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,710 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,724 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,738 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:24,945 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2019-11-24 05:44:25,088 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 252 [2019-11-24 05:44:25,162 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,185 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,208 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,232 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,257 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,283 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,306 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,330 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,447 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,480 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,500 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,740 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,759 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,782 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,920 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:25,938 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,028 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,047 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,086 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,107 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,128 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,151 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,171 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,189 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,209 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,227 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,247 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,283 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,485 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,620 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,636 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,650 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,670 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,687 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,705 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:26,928 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:27,241 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 252 [2019-11-24 05:44:27,627 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:44:28,266 WARN L192 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 89 [2019-11-24 05:44:29,141 WARN L192 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 83 [2019-11-24 05:44:31,843 WARN L192 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 174 DAG size of output: 120 [2019-11-24 05:44:33,296 WARN L192 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 154 DAG size of output: 103 [2019-11-24 05:44:33,973 WARN L192 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 84 [2019-11-24 05:44:33,976 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 05:44:33,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 05:44:33,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2019-11-24 05:44:33,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132540863] [2019-11-24 05:44:33,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:44:33,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:44:33,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:44:33,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-24 05:44:33,979 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 6 states. [2019-11-24 05:44:33,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:44:33,995 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2019-11-24 05:44:33,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:44:33,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2019-11-24 05:44:33,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:44:33,996 INFO L225 Difference]: With dead ends: 36 [2019-11-24 05:44:33,996 INFO L226 Difference]: Without dead ends: 21 [2019-11-24 05:44:33,997 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-24 05:44:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-24 05:44:34,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-24 05:44:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 05:44:34,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-24 05:44:34,001 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2019-11-24 05:44:34,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:44:34,001 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-24 05:44:34,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:44:34,002 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-24 05:44:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-24 05:44:34,002 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:34,002 INFO L410 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:34,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:44:34,204 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:34,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:34,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1113069450, now seen corresponding path program 2 times [2019-11-24 05:44:34,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:34,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833745138] [2019-11-24 05:44:34,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:34,322 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 05:44:34,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833745138] [2019-11-24 05:44:34,323 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863296366] [2019-11-24 05:44:34,323 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:44:34,373 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-24 05:44:34,373 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-24 05:44:34,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-24 05:44:34,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:44:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-24 05:44:34,402 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:44:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-24 05:44:34,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1312488773] [2019-11-24 05:44:34,440 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:44:34,440 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:44:34,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:44:34,440 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:44:34,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:44:36,326 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,349 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,378 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,408 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,438 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,468 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,494 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,519 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,548 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,578 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,607 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,763 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,781 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,801 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,818 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,949 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:36,998 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,015 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,032 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,053 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,078 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,101 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,318 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,344 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,368 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,392 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,414 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,437 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,456 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,472 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,487 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,579 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,592 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,829 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,936 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,955 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,977 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:37,998 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,023 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,047 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,068 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,089 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,109 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,205 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,222 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,237 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,380 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,400 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,421 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,599 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,625 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,654 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,680 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,709 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,734 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,761 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,922 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,951 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:38,975 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,000 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,023 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,173 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,198 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,221 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,241 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,450 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 254 [2019-11-24 05:44:39,615 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 255 [2019-11-24 05:44:39,673 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,691 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,714 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,731 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,759 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:39,992 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,008 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,087 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,108 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,127 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,145 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,163 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,182 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,200 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,351 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,370 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,387 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,482 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,501 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,519 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,535 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,669 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,687 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,797 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,816 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,835 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,852 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,870 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,886 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,901 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,918 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,933 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:40,994 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,337 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 257 [2019-11-24 05:44:41,405 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,429 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,450 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,472 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,492 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,509 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,527 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,724 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,741 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,759 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,776 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,812 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,835 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,858 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,933 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,965 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:41,999 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,229 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,255 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,280 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,304 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,326 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,351 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,376 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,399 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,423 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,450 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,475 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,569 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,585 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,600 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,615 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,728 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,748 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,830 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,845 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:42,919 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,016 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,032 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,047 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,063 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,079 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,482 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,573 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,622 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,970 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:43,988 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,020 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,040 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,056 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,072 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,091 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,109 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,126 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,142 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,161 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,177 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,192 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,206 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,247 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,260 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,275 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,291 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,363 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,551 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,614 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,631 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,648 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,665 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,682 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,697 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:44,791 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,097 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,119 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,210 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,309 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,324 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,342 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,361 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,380 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,396 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,413 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,431 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,447 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,466 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,611 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,660 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,679 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,699 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,777 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,845 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:45,860 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,014 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,253 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,270 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,288 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,307 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,427 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,450 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,471 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,491 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,510 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,552 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,568 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,901 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,955 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:46,993 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,026 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,060 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,088 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,097 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,122 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,143 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,161 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,177 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,189 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:47,365 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:44:47,723 WARN L192 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 90 [2019-11-24 05:44:48,487 WARN L192 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 84 [2019-11-24 05:44:50,374 WARN L192 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 172 DAG size of output: 118 [2019-11-24 05:44:51,822 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 241 DAG size of output: 112 [2019-11-24 05:44:52,675 WARN L192 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 104 [2019-11-24 05:44:53,063 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 85 [2019-11-24 05:44:53,064 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 05:44:53,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 05:44:53,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2019-11-24 05:44:53,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366045223] [2019-11-24 05:44:53,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-24 05:44:53,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:44:53,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-24 05:44:53,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2019-11-24 05:44:53,067 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 12 states. [2019-11-24 05:44:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:44:53,145 INFO L93 Difference]: Finished difference Result 46 states and 63 transitions. [2019-11-24 05:44:53,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-24 05:44:53,145 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2019-11-24 05:44:53,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:44:53,146 INFO L225 Difference]: With dead ends: 46 [2019-11-24 05:44:53,147 INFO L226 Difference]: Without dead ends: 31 [2019-11-24 05:44:53,148 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2019-11-24 05:44:53,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-24 05:44:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-24 05:44:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-24 05:44:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-11-24 05:44:53,153 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2019-11-24 05:44:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:44:53,153 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-11-24 05:44:53,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-24 05:44:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-11-24 05:44:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 05:44:53,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:44:53,155 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:44:53,358 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:44:53,359 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:44:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:44:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1138725788, now seen corresponding path program 3 times [2019-11-24 05:44:53,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:44:53,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454607574] [2019-11-24 05:44:53,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:44:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:44:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-24 05:44:53,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454607574] [2019-11-24 05:44:53,490 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364951852] [2019-11-24 05:44:53,490 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:44:53,544 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-24 05:44:53,545 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-24 05:44:53,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-24 05:44:53,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:44:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-24 05:44:53,553 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:44:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-24 05:44:53,565 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1838513888] [2019-11-24 05:44:53,566 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:44:53,567 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:44:53,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:44:53,567 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:44:53,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:44:55,080 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,096 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,357 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,377 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,404 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,428 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,451 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,598 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,615 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,632 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,732 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,748 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,764 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,780 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,794 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,808 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,823 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,836 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,848 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,859 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,872 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,884 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,896 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,908 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,920 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,931 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,943 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:55,956 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,154 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,172 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,305 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,323 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,339 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,356 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,375 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,490 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,712 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,737 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,765 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,945 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:56,973 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,000 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,027 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,052 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,080 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,228 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,248 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,267 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,284 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,350 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,368 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,385 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,402 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,420 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,436 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,452 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,467 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,527 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:57,771 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 261 [2019-11-24 05:44:57,823 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,114 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,139 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,164 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,190 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,215 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,236 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,386 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,403 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,422 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,440 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,456 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,470 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,488 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,604 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,621 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,638 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,655 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,743 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,761 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,843 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,862 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,947 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,961 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,978 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:58,997 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,014 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,086 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,102 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,120 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,317 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,334 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,411 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,477 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,775 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,796 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,880 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:44:59,985 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,117 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,138 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,157 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,176 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,196 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,215 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,233 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,252 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,272 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,290 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,307 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,327 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,345 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,391 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,578 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,598 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,686 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,705 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,724 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,744 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,760 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,858 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,876 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,894 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:00,913 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,006 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,024 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,041 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,057 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,143 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,162 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,299 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,394 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,410 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,683 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 268 [2019-11-24 05:45:01,949 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,969 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:01,992 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,096 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,118 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,139 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,158 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,304 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,324 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,440 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,637 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,655 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,676 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,695 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,738 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,757 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,778 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,798 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,817 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,836 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,854 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,938 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,958 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,975 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:02,993 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,100 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,168 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,184 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,201 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,215 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,498 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 271 [2019-11-24 05:45:03,545 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,565 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,653 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,737 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,757 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,775 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,794 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,846 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,932 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:03,950 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,124 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,143 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,164 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,184 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,338 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,357 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,374 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,390 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,585 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,601 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,619 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,734 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,750 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,767 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,811 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,892 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,909 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:04,925 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,268 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,374 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,417 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,456 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,493 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,534 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,567 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,595 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,620 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,643 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,667 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,682 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,695 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,706 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 05:45:05,944 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:45:06,381 WARN L192 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 89 [2019-11-24 05:45:07,055 WARN L192 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 80 [2019-11-24 05:45:08,892 WARN L192 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 171 DAG size of output: 126 [2019-11-24 05:45:10,441 WARN L192 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 245 DAG size of output: 116 [2019-11-24 05:45:11,953 WARN L192 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 167 DAG size of output: 105 [2019-11-24 05:45:12,423 WARN L192 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 84 [2019-11-24 05:45:12,424 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 05:45:12,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-24 05:45:12,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2019-11-24 05:45:12,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543355383] [2019-11-24 05:45:12,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 05:45:12,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:45:12,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 05:45:12,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-24 05:45:12,427 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2019-11-24 05:45:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:45:12,447 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-11-24 05:45:12,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:45:12,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2019-11-24 05:45:12,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:45:12,450 INFO L225 Difference]: With dead ends: 42 [2019-11-24 05:45:12,450 INFO L226 Difference]: Without dead ends: 33 [2019-11-24 05:45:12,450 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-11-24 05:45:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-24 05:45:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-11-24 05:45:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 05:45:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2019-11-24 05:45:12,455 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 30 [2019-11-24 05:45:12,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:45:12,455 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2019-11-24 05:45:12,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 05:45:12,455 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2019-11-24 05:45:12,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-24 05:45:12,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:45:12,456 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:45:12,657 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 05:45:12,657 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:45:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:45:12,658 INFO L82 PathProgramCache]: Analyzing trace with hash -716453412, now seen corresponding path program 4 times [2019-11-24 05:45:12,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:45:12,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029312275] [2019-11-24 05:45:12,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:45:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:45:15,961 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45