/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/ssh-simplified/s3_clnt_1.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 06:00:13,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 06:00:13,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 06:00:13,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 06:00:13,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 06:00:13,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 06:00:13,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 06:00:13,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 06:00:13,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 06:00:13,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 06:00:13,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 06:00:13,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 06:00:13,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 06:00:13,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 06:00:13,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 06:00:13,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 06:00:13,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 06:00:13,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 06:00:13,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 06:00:13,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 06:00:13,413 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 06:00:13,448 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 06:00:13,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 06:00:13,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 06:00:13,453 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 06:00:13,453 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 06:00:13,454 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 06:00:13,454 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 06:00:13,454 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 06:00:13,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 06:00:13,454 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 06:00:13,455 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 06:00:13,457 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 06:00:13,457 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 06:00:13,457 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 06:00:13,458 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 06:00:13,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 06:00:13,458 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 06:00:13,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 06:00:13,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 06:00:13,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 06:00:13,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 06:00:13,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 06:00:13,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 06:00:13,460 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 06:00:13,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 06:00:13,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 06:00:13,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 06:00:13,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 06:00:13,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 06:00:13,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 06:00:13,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 06:00:13,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 06:00:13,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 06:00:13,462 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 06:00:13,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 06:00:13,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 06:00:13,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 06:00:13,465 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 06:00:13,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 06:00:13,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 06:00:13,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 06:00:13,738 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 06:00:13,739 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 06:00:13,740 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-1.c [2019-11-24 06:00:13,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3190e99/8bd27e8607104ce8b33b7592278b01b8/FLAGa20ad5926 [2019-11-24 06:00:14,338 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 06:00:14,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_clnt_1.cil-1.c [2019-11-24 06:00:14,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3190e99/8bd27e8607104ce8b33b7592278b01b8/FLAGa20ad5926 [2019-11-24 06:00:14,688 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd3190e99/8bd27e8607104ce8b33b7592278b01b8 [2019-11-24 06:00:14,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 06:00:14,698 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 06:00:14,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 06:00:14,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 06:00:14,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 06:00:14,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:00:14" (1/1) ... [2019-11-24 06:00:14,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d226c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:14, skipping insertion in model container [2019-11-24 06:00:14,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:00:14" (1/1) ... [2019-11-24 06:00:14,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 06:00:14,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 06:00:14,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:00:14,997 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 06:00:15,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:00:15,157 INFO L208 MainTranslator]: Completed translation [2019-11-24 06:00:15,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15 WrapperNode [2019-11-24 06:00:15,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 06:00:15,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 06:00:15,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 06:00:15,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 06:00:15,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 06:00:15,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 06:00:15,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 06:00:15,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 06:00:15,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (1/1) ... [2019-11-24 06:00:15,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 06:00:15,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 06:00:15,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 06:00:15,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 06:00:15,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (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 06:00:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 06:00:15,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 06:00:15,460 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 06:00:16,126 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2019-11-24 06:00:16,127 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2019-11-24 06:00:16,504 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 06:00:16,505 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 06:00:16,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:00:16 BoogieIcfgContainer [2019-11-24 06:00:16,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 06:00:16,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 06:00:16,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 06:00:16,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 06:00:16,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 06:00:14" (1/3) ... [2019-11-24 06:00:16,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea72e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:00:16, skipping insertion in model container [2019-11-24 06:00:16,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:00:15" (2/3) ... [2019-11-24 06:00:16,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea72e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:00:16, skipping insertion in model container [2019-11-24 06:00:16,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:00:16" (3/3) ... [2019-11-24 06:00:16,515 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-1.c [2019-11-24 06:00:16,526 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 06:00:16,534 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 06:00:16,547 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 06:00:16,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 06:00:16,574 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 06:00:16,575 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 06:00:16,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 06:00:16,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 06:00:16,575 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 06:00:16,575 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 06:00:16,576 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 06:00:16,596 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2019-11-24 06:00:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 06:00:16,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:00:16,606 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:00:16,607 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:00:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:00:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1896926973, now seen corresponding path program 1 times [2019-11-24 06:00:16,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:00:16,629 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218841965] [2019-11-24 06:00:16,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:00:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:16,867 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 06:00:16,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218841965] [2019-11-24 06:00:16,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:00:16,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:00:16,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185073421] [2019-11-24 06:00:16,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:00:16,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:00:16,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:00:16,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:00:16,894 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2019-11-24 06:00:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:00:17,080 INFO L93 Difference]: Finished difference Result 169 states and 293 transitions. [2019-11-24 06:00:17,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:00:17,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 06:00:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:00:17,095 INFO L225 Difference]: With dead ends: 169 [2019-11-24 06:00:17,095 INFO L226 Difference]: Without dead ends: 83 [2019-11-24 06:00:17,099 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 06:00:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-24 06:00:17,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2019-11-24 06:00:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-24 06:00:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2019-11-24 06:00:17,146 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 19 [2019-11-24 06:00:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:00:17,147 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2019-11-24 06:00:17,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:00:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2019-11-24 06:00:17,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-24 06:00:17,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:00:17,149 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:00:17,149 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:00:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:00:17,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1784621399, now seen corresponding path program 1 times [2019-11-24 06:00:17,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:00:17,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693332374] [2019-11-24 06:00:17,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:00:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:17,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:00:17,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693332374] [2019-11-24 06:00:17,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:00:17,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:00:17,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423646436] [2019-11-24 06:00:17,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:00:17,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:00:17,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:00:17,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:00:17,275 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand 3 states. [2019-11-24 06:00:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:00:17,425 INFO L93 Difference]: Finished difference Result 178 states and 261 transitions. [2019-11-24 06:00:17,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:00:17,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-24 06:00:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:00:17,428 INFO L225 Difference]: With dead ends: 178 [2019-11-24 06:00:17,428 INFO L226 Difference]: Without dead ends: 98 [2019-11-24 06:00:17,429 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:00:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-24 06:00:17,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2019-11-24 06:00:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-24 06:00:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 136 transitions. [2019-11-24 06:00:17,440 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 136 transitions. Word has length 28 [2019-11-24 06:00:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:00:17,440 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 136 transitions. [2019-11-24 06:00:17,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:00:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 136 transitions. [2019-11-24 06:00:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-24 06:00:17,442 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:00:17,442 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:00:17,442 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:00:17,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:00:17,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1860014689, now seen corresponding path program 1 times [2019-11-24 06:00:17,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:00:17,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772913926] [2019-11-24 06:00:17,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:00:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 06:00:17,500 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772913926] [2019-11-24 06:00:17,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:00:17,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:00:17,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890052960] [2019-11-24 06:00:17,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:00:17,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:00:17,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:00:17,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:00:17,503 INFO L87 Difference]: Start difference. First operand 96 states and 136 transitions. Second operand 3 states. [2019-11-24 06:00:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:00:17,676 INFO L93 Difference]: Finished difference Result 206 states and 297 transitions. [2019-11-24 06:00:17,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:00:17,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-11-24 06:00:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:00:17,680 INFO L225 Difference]: With dead ends: 206 [2019-11-24 06:00:17,680 INFO L226 Difference]: Without dead ends: 113 [2019-11-24 06:00:17,685 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:00:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-11-24 06:00:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2019-11-24 06:00:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-11-24 06:00:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2019-11-24 06:00:17,706 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 39 [2019-11-24 06:00:17,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:00:17,706 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2019-11-24 06:00:17,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:00:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2019-11-24 06:00:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-11-24 06:00:17,711 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:00:17,712 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:00:17,713 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:00:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:00:17,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1968135473, now seen corresponding path program 1 times [2019-11-24 06:00:17,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:00:17,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20095415] [2019-11-24 06:00:17,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:00:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 06:00:17,840 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20095415] [2019-11-24 06:00:17,841 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071016564] [2019-11-24 06:00:17,841 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 06:00:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:17,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 06:00:17,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:00:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 06:00:18,035 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:00:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 06:00:18,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 06:00:18,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2019-11-24 06:00:18,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174072410] [2019-11-24 06:00:18,076 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 06:00:18,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:00:18,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 06:00:18,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-24 06:00:18,077 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand 6 states. [2019-11-24 06:00:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:00:18,469 INFO L93 Difference]: Finished difference Result 312 states and 467 transitions. [2019-11-24 06:00:18,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 06:00:18,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2019-11-24 06:00:18,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:00:18,471 INFO L225 Difference]: With dead ends: 312 [2019-11-24 06:00:18,472 INFO L226 Difference]: Without dead ends: 203 [2019-11-24 06:00:18,473 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-24 06:00:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2019-11-24 06:00:18,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 186. [2019-11-24 06:00:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2019-11-24 06:00:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 255 transitions. [2019-11-24 06:00:18,487 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 255 transitions. Word has length 52 [2019-11-24 06:00:18,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:00:18,488 INFO L462 AbstractCegarLoop]: Abstraction has 186 states and 255 transitions. [2019-11-24 06:00:18,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 06:00:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 255 transitions. [2019-11-24 06:00:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-24 06:00:18,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:00:18,490 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:00:18,695 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:00:18,695 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:00:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:00:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1017053082, now seen corresponding path program 1 times [2019-11-24 06:00:18,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:00:18,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942223041] [2019-11-24 06:00:18,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:00:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-24 06:00:18,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942223041] [2019-11-24 06:00:18,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:00:18,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:00:18,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665863173] [2019-11-24 06:00:18,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:00:18,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:00:18,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:00:18,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:00:18,795 INFO L87 Difference]: Start difference. First operand 186 states and 255 transitions. Second operand 3 states. [2019-11-24 06:00:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:00:18,942 INFO L93 Difference]: Finished difference Result 390 states and 543 transitions. [2019-11-24 06:00:18,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:00:18,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-11-24 06:00:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:00:18,944 INFO L225 Difference]: With dead ends: 390 [2019-11-24 06:00:18,946 INFO L226 Difference]: Without dead ends: 207 [2019-11-24 06:00:18,951 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:00:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2019-11-24 06:00:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 205. [2019-11-24 06:00:18,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-24 06:00:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 277 transitions. [2019-11-24 06:00:18,974 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 277 transitions. Word has length 67 [2019-11-24 06:00:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:00:18,974 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 277 transitions. [2019-11-24 06:00:18,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:00:18,975 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 277 transitions. [2019-11-24 06:00:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-24 06:00:18,981 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:00:18,981 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:00:18,981 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:00:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:00:18,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1268179167, now seen corresponding path program 1 times [2019-11-24 06:00:18,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:00:18,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291383158] [2019-11-24 06:00:18,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:00:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-24 06:00:19,130 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291383158] [2019-11-24 06:00:19,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155429674] [2019-11-24 06:00:19,132 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 06:00:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:19,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-24 06:00:19,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:00:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-24 06:00:19,241 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:00:19,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:00:19,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:00:19,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:00:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-24 06:00:19,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 06:00:19,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 6 [2019-11-24 06:00:19,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182196640] [2019-11-24 06:00:19,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:00:19,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:00:19,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:00:19,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 06:00:19,307 INFO L87 Difference]: Start difference. First operand 205 states and 277 transitions. Second operand 3 states. [2019-11-24 06:00:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:00:19,341 INFO L93 Difference]: Finished difference Result 406 states and 550 transitions. [2019-11-24 06:00:19,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:00:19,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2019-11-24 06:00:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:00:19,349 INFO L225 Difference]: With dead ends: 406 [2019-11-24 06:00:19,350 INFO L226 Difference]: Without dead ends: 404 [2019-11-24 06:00:19,350 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 06:00:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2019-11-24 06:00:19,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 403. [2019-11-24 06:00:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2019-11-24 06:00:19,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 547 transitions. [2019-11-24 06:00:19,383 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 547 transitions. Word has length 85 [2019-11-24 06:00:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:00:19,383 INFO L462 AbstractCegarLoop]: Abstraction has 403 states and 547 transitions. [2019-11-24 06:00:19,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:00:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 547 transitions. [2019-11-24 06:00:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-11-24 06:00:19,391 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:00:19,391 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:00:19,594 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:00:19,595 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:00:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:00:19,595 INFO L82 PathProgramCache]: Analyzing trace with hash -761853620, now seen corresponding path program 1 times [2019-11-24 06:00:19,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:00:19,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452104787] [2019-11-24 06:00:19,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:00:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-24 06:00:19,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452104787] [2019-11-24 06:00:19,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:00:19,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:00:19,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875689031] [2019-11-24 06:00:19,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:00:19,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:00:19,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:00:19,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:00:19,674 INFO L87 Difference]: Start difference. First operand 403 states and 547 transitions. Second operand 3 states. [2019-11-24 06:00:19,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:00:19,841 INFO L93 Difference]: Finished difference Result 853 states and 1175 transitions. [2019-11-24 06:00:19,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:00:19,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2019-11-24 06:00:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:00:19,848 INFO L225 Difference]: With dead ends: 853 [2019-11-24 06:00:19,848 INFO L226 Difference]: Without dead ends: 453 [2019-11-24 06:00:19,849 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 06:00:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-11-24 06:00:19,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2019-11-24 06:00:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-11-24 06:00:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 595 transitions. [2019-11-24 06:00:19,886 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 595 transitions. Word has length 107 [2019-11-24 06:00:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:00:19,888 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 595 transitions. [2019-11-24 06:00:19,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:00:19,890 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 595 transitions. [2019-11-24 06:00:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-24 06:00:19,892 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:00:19,893 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:00:19,893 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:00:19,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:00:19,893 INFO L82 PathProgramCache]: Analyzing trace with hash -335925892, now seen corresponding path program 1 times [2019-11-24 06:00:19,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:00:19,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527169376] [2019-11-24 06:00:19,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:00:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 06:00:20,006 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527169376] [2019-11-24 06:00:20,007 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250290000] [2019-11-24 06:00:20,007 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 06:00:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:00:20,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-24 06:00:20,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:00:20,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:00:20,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:00:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 06:00:20,141 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:00:20,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:00:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 102 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 06:00:20,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170859944] [2019-11-24 06:00:20,224 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2019-11-24 06:00:20,224 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 06:00:20,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 06:00:20,238 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 06:00:20,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 06:00:21,620 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 231 [2019-11-24 06:00:21,788 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-11-24 06:00:21,925 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-11-24 06:00:22,037 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-11-24 06:00:22,233 WARN L192 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 247 [2019-11-24 06:00:22,501 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 248 [2019-11-24 06:00:22,729 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 229 [2019-11-24 06:00:22,866 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 229 [2019-11-24 06:00:22,983 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2019-11-24 06:00:23,187 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2019-11-24 06:00:23,290 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2019-11-24 06:00:23,394 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2019-11-24 06:00:23,517 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 231 [2019-11-24 06:00:23,626 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 231 [2019-11-24 06:00:23,740 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2019-11-24 06:00:24,276 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 247 [2019-11-24 06:00:24,475 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 248 [2019-11-24 06:00:25,356 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 312 DAG size of output: 299 [2019-11-24 06:00:25,490 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 304 [2019-11-24 06:00:26,762 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2019-11-24 06:00:27,613 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 227 [2019-11-24 06:00:28,046 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 231 [2019-11-24 06:00:28,212 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-11-24 06:00:28,341 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-11-24 06:00:28,471 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-11-24 06:00:28,610 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 247 [2019-11-24 06:00:28,741 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 248 [2019-11-24 06:00:28,958 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 226 [2019-11-24 06:00:29,100 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2019-11-24 06:00:29,369 WARN L192 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 256 [2019-11-24 06:00:29,620 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 256 [2019-11-24 06:00:29,829 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2019-11-24 06:00:29,958 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 261 DAG size of output: 256 [2019-11-24 06:00:31,116 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 245 [2019-11-24 06:00:32,147 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2019-11-24 06:00:32,248 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 250 [2019-11-24 06:00:32,542 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2019-11-24 06:00:32,671 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2019-11-24 06:00:32,817 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2019-11-24 06:00:32,821 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 06:00:40,092 WARN L192 SmtUtils]: Spent 7.19 s on a formula simplification. DAG size of input: 248 DAG size of output: 216 [2019-11-24 06:00:47,303 WARN L192 SmtUtils]: Spent 7.11 s on a formula simplification. DAG size of input: 244 DAG size of output: 214 [2019-11-24 06:00:48,294 WARN L192 SmtUtils]: Spent 933.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 150 [2019-11-24 06:00:49,348 WARN L192 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 156 [2019-11-24 06:00:50,424 WARN L192 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 167 DAG size of output: 157 [2019-11-24 06:00:51,573 WARN L192 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 159 [2019-11-24 06:00:58,135 WARN L192 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 240 DAG size of output: 203 [2019-11-24 06:01:04,698 WARN L192 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 240 DAG size of output: 203 [2019-11-24 06:01:13,640 WARN L192 SmtUtils]: Spent 8.75 s on a formula simplification. DAG size of input: 246 DAG size of output: 202 [2019-11-24 06:01:16,214 WARN L192 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 261 DAG size of output: 170 [2019-11-24 06:01:18,426 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 259 DAG size of output: 172 [2019-11-24 06:01:24,104 WARN L192 SmtUtils]: Spent 4.62 s on a formula simplification. DAG size of input: 262 DAG size of output: 205 [2019-11-24 06:01:26,211 WARN L192 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 265 DAG size of output: 172 [2019-11-24 06:01:28,368 WARN L192 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 263 DAG size of output: 174 [2019-11-24 06:01:34,880 WARN L192 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 266 DAG size of output: 195 [2019-11-24 06:01:40,738 WARN L192 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 270 DAG size of output: 191 [2019-11-24 06:01:48,083 WARN L192 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 304 DAG size of output: 177