/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_srvr_7.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 06:03:36,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 06:03:36,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 06:03:36,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 06:03:36,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 06:03:36,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 06:03:36,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 06:03:36,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 06:03:36,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 06:03:36,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 06:03:36,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 06:03:36,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 06:03:36,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 06:03:36,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 06:03:36,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 06:03:36,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 06:03:36,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 06:03:36,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 06:03:36,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 06:03:36,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 06:03:36,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 06:03:36,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 06:03:36,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 06:03:36,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 06:03:36,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 06:03:36,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 06:03:36,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 06:03:36,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 06:03:36,424 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 06:03:36,438 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 06:03:36,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 06:03:36,440 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 06:03:36,440 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 06:03:36,440 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 06:03:36,440 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 06:03:36,440 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 06:03:36,441 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 06:03:36,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 06:03:36,441 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 06:03:36,441 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 06:03:36,441 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 06:03:36,442 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 06:03:36,442 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 06:03:36,442 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 06:03:36,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 06:03:36,443 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 06:03:36,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 06:03:36,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 06:03:36,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 06:03:36,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 06:03:36,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 06:03:36,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 06:03:36,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 06:03:36,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 06:03:36,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 06:03:36,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 06:03:36,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 06:03:36,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 06:03:36,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 06:03:36,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 06:03:36,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 06:03:36,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 06:03:36,446 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 06:03:36,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 06:03:36,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 06:03:36,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 06:03:36,447 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 06:03:36,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 06:03:36,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 06:03:36,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 06:03:36,754 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 06:03:36,754 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 06:03:36,755 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_7.cil.c [2019-11-24 06:03:36,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1b75175/23ad9143fccb457993f321ceb0243058/FLAG38ab0f267 [2019-11-24 06:03:37,307 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 06:03:37,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_7.cil.c [2019-11-24 06:03:37,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1b75175/23ad9143fccb457993f321ceb0243058/FLAG38ab0f267 [2019-11-24 06:03:37,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e1b75175/23ad9143fccb457993f321ceb0243058 [2019-11-24 06:03:37,657 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 06:03:37,658 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 06:03:37,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 06:03:37,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 06:03:37,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 06:03:37,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:03:37" (1/1) ... [2019-11-24 06:03:37,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@490256d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:37, skipping insertion in model container [2019-11-24 06:03:37,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:03:37" (1/1) ... [2019-11-24 06:03:37,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 06:03:37,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 06:03:38,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:03:38,023 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 06:03:38,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:03:38,210 INFO L208 MainTranslator]: Completed translation [2019-11-24 06:03:38,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38 WrapperNode [2019-11-24 06:03:38,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 06:03:38,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 06:03:38,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 06:03:38,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 06:03:38,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 06:03:38,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 06:03:38,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 06:03:38,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 06:03:38,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (1/1) ... [2019-11-24 06:03:38,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 06:03:38,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 06:03:38,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 06:03:38,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 06:03:38,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (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 06:03:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 06:03:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 06:03:38,534 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 06:03:39,241 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-11-24 06:03:39,242 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-11-24 06:03:39,566 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 06:03:39,566 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 06:03:39,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:03:39 BoogieIcfgContainer [2019-11-24 06:03:39,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 06:03:39,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 06:03:39,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 06:03:39,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 06:03:39,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 06:03:37" (1/3) ... [2019-11-24 06:03:39,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beab5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:03:39, skipping insertion in model container [2019-11-24 06:03:39,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:38" (2/3) ... [2019-11-24 06:03:39,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beab5c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:03:39, skipping insertion in model container [2019-11-24 06:03:39,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:03:39" (3/3) ... [2019-11-24 06:03:39,576 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_7.cil.c [2019-11-24 06:03:39,585 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 06:03:39,593 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 06:03:39,605 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 06:03:39,631 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 06:03:39,631 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 06:03:39,631 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 06:03:39,632 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 06:03:39,632 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 06:03:39,632 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 06:03:39,632 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 06:03:39,632 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 06:03:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2019-11-24 06:03:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-24 06:03:39,659 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:39,660 INFO L410 BasicCegarLoop]: trace histogram [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 06:03:39,661 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:39,667 INFO L82 PathProgramCache]: Analyzing trace with hash -403068003, now seen corresponding path program 1 times [2019-11-24 06:03:39,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:39,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082323785] [2019-11-24 06:03:39,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:39,875 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 06:03:39,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082323785] [2019-11-24 06:03:39,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:39,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:03:39,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123058454] [2019-11-24 06:03:39,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:39,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:39,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:39,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:39,901 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 3 states. [2019-11-24 06:03:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:40,140 INFO L93 Difference]: Finished difference Result 233 states and 404 transitions. [2019-11-24 06:03:40,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:40,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-24 06:03:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:40,160 INFO L225 Difference]: With dead ends: 233 [2019-11-24 06:03:40,161 INFO L226 Difference]: Without dead ends: 122 [2019-11-24 06:03:40,168 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 06:03:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-24 06:03:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2019-11-24 06:03:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-11-24 06:03:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 176 transitions. [2019-11-24 06:03:40,246 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 176 transitions. Word has length 28 [2019-11-24 06:03:40,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:40,247 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 176 transitions. [2019-11-24 06:03:40,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 176 transitions. [2019-11-24 06:03:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-24 06:03:40,251 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:40,252 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1] [2019-11-24 06:03:40,253 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:40,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:40,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1190935798, now seen corresponding path program 1 times [2019-11-24 06:03:40,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:40,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513406882] [2019-11-24 06:03:40,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:03:40,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513406882] [2019-11-24 06:03:40,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:40,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:40,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595641862] [2019-11-24 06:03:40,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:40,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:40,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:40,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:40,382 INFO L87 Difference]: Start difference. First operand 120 states and 176 transitions. Second operand 3 states. [2019-11-24 06:03:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:40,597 INFO L93 Difference]: Finished difference Result 259 states and 386 transitions. [2019-11-24 06:03:40,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:40,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-11-24 06:03:40,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:40,602 INFO L225 Difference]: With dead ends: 259 [2019-11-24 06:03:40,602 INFO L226 Difference]: Without dead ends: 141 [2019-11-24 06:03:40,603 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 06:03:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-24 06:03:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 139. [2019-11-24 06:03:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-11-24 06:03:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2019-11-24 06:03:40,627 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 42 [2019-11-24 06:03:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:40,628 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2019-11-24 06:03:40,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2019-11-24 06:03:40,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-11-24 06:03:40,636 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:40,638 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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 06:03:40,638 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:40,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1972847545, now seen corresponding path program 1 times [2019-11-24 06:03:40,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:40,639 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778174334] [2019-11-24 06:03:40,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:03:40,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778174334] [2019-11-24 06:03:40,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727414069] [2019-11-24 06:03:40,762 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 06:03:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:40,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 06:03:40,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 06:03:40,944 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 06:03:40,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-24 06:03:40,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 9 [2019-11-24 06:03:40,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015097026] [2019-11-24 06:03:40,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 06:03:40,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:41,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 06:03:41,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-24 06:03:41,000 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand 6 states. [2019-11-24 06:03:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:41,355 INFO L93 Difference]: Finished difference Result 381 states and 577 transitions. [2019-11-24 06:03:41,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 06:03:41,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2019-11-24 06:03:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:41,361 INFO L225 Difference]: With dead ends: 381 [2019-11-24 06:03:41,361 INFO L226 Difference]: Without dead ends: 244 [2019-11-24 06:03:41,364 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 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 06:03:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-11-24 06:03:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 206. [2019-11-24 06:03:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2019-11-24 06:03:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 278 transitions. [2019-11-24 06:03:41,390 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 278 transitions. Word has length 59 [2019-11-24 06:03:41,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:41,390 INFO L462 AbstractCegarLoop]: Abstraction has 206 states and 278 transitions. [2019-11-24 06:03:41,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 06:03:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 278 transitions. [2019-11-24 06:03:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-24 06:03:41,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:41,395 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2019-11-24 06:03:41,598 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:41,599 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:41,600 INFO L82 PathProgramCache]: Analyzing trace with hash 241557551, now seen corresponding path program 1 times [2019-11-24 06:03:41,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:41,601 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024112284] [2019-11-24 06:03:41,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:41,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-24 06:03:41,663 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024112284] [2019-11-24 06:03:41,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:41,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:41,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303037686] [2019-11-24 06:03:41,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:41,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:41,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:41,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:41,665 INFO L87 Difference]: Start difference. First operand 206 states and 278 transitions. Second operand 3 states. [2019-11-24 06:03:41,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:41,795 INFO L93 Difference]: Finished difference Result 443 states and 612 transitions. [2019-11-24 06:03:41,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:41,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2019-11-24 06:03:41,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:41,798 INFO L225 Difference]: With dead ends: 443 [2019-11-24 06:03:41,798 INFO L226 Difference]: Without dead ends: 239 [2019-11-24 06:03:41,799 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 06:03:41,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-11-24 06:03:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2019-11-24 06:03:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2019-11-24 06:03:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 304 transitions. [2019-11-24 06:03:41,813 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 304 transitions. Word has length 79 [2019-11-24 06:03:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:41,813 INFO L462 AbstractCegarLoop]: Abstraction has 229 states and 304 transitions. [2019-11-24 06:03:41,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 304 transitions. [2019-11-24 06:03:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-11-24 06:03:41,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:41,815 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:41,816 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:41,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:41,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1855709040, now seen corresponding path program 1 times [2019-11-24 06:03:41,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:41,817 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278015742] [2019-11-24 06:03:41,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-24 06:03:41,902 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278015742] [2019-11-24 06:03:41,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:41,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:41,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673335711] [2019-11-24 06:03:41,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:41,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:41,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:41,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:41,904 INFO L87 Difference]: Start difference. First operand 229 states and 304 transitions. Second operand 3 states. [2019-11-24 06:03:42,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:42,078 INFO L93 Difference]: Finished difference Result 505 states and 677 transitions. [2019-11-24 06:03:42,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:42,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2019-11-24 06:03:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:42,083 INFO L225 Difference]: With dead ends: 505 [2019-11-24 06:03:42,083 INFO L226 Difference]: Without dead ends: 278 [2019-11-24 06:03:42,086 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 06:03:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-11-24 06:03:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2019-11-24 06:03:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-11-24 06:03:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 349 transitions. [2019-11-24 06:03:42,111 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 349 transitions. Word has length 98 [2019-11-24 06:03:42,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:42,111 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 349 transitions. [2019-11-24 06:03:42,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:42,112 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 349 transitions. [2019-11-24 06:03:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-24 06:03:42,113 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:42,113 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1] [2019-11-24 06:03:42,113 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:42,115 INFO L82 PathProgramCache]: Analyzing trace with hash 679963792, now seen corresponding path program 1 times [2019-11-24 06:03:42,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:42,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226494050] [2019-11-24 06:03:42,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-24 06:03:42,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226494050] [2019-11-24 06:03:42,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975810079] [2019-11-24 06:03:42,268 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 06:03:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:42,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-24 06:03:42,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-11-24 06:03:42,386 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:42,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:42,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:42,421 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-11-24 06:03:42,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 06:03:42,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 6 [2019-11-24 06:03:42,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198630134] [2019-11-24 06:03:42,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:42,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:42,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:42,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 06:03:42,449 INFO L87 Difference]: Start difference. First operand 268 states and 349 transitions. Second operand 3 states. [2019-11-24 06:03:42,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:42,487 INFO L93 Difference]: Finished difference Result 495 states and 650 transitions. [2019-11-24 06:03:42,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:42,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2019-11-24 06:03:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:42,494 INFO L225 Difference]: With dead ends: 495 [2019-11-24 06:03:42,494 INFO L226 Difference]: Without dead ends: 493 [2019-11-24 06:03:42,495 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 199 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 06:03:42,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-11-24 06:03:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 472. [2019-11-24 06:03:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-11-24 06:03:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 628 transitions. [2019-11-24 06:03:42,515 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 628 transitions. Word has length 103 [2019-11-24 06:03:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:42,515 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 628 transitions. [2019-11-24 06:03:42,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 628 transitions. [2019-11-24 06:03:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-24 06:03:42,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:42,518 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:42,720 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:42,721 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:42,722 INFO L82 PathProgramCache]: Analyzing trace with hash 909148558, now seen corresponding path program 1 times [2019-11-24 06:03:42,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:42,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390620173] [2019-11-24 06:03:42,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-24 06:03:42,802 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390620173] [2019-11-24 06:03:42,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:42,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:42,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43866415] [2019-11-24 06:03:42,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:42,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:42,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:42,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:42,805 INFO L87 Difference]: Start difference. First operand 472 states and 628 transitions. Second operand 3 states. [2019-11-24 06:03:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:43,002 INFO L93 Difference]: Finished difference Result 1044 states and 1432 transitions. [2019-11-24 06:03:43,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:43,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-11-24 06:03:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:43,006 INFO L225 Difference]: With dead ends: 1044 [2019-11-24 06:03:43,006 INFO L226 Difference]: Without dead ends: 572 [2019-11-24 06:03:43,007 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 06:03:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-11-24 06:03:43,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 566. [2019-11-24 06:03:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2019-11-24 06:03:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 779 transitions. [2019-11-24 06:03:43,029 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 779 transitions. Word has length 106 [2019-11-24 06:03:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:43,030 INFO L462 AbstractCegarLoop]: Abstraction has 566 states and 779 transitions. [2019-11-24 06:03:43,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 779 transitions. [2019-11-24 06:03:43,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-24 06:03:43,032 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:43,033 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:43,033 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:43,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:43,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1668989894, now seen corresponding path program 1 times [2019-11-24 06:03:43,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:43,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716684663] [2019-11-24 06:03:43,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-11-24 06:03:43,095 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716684663] [2019-11-24 06:03:43,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:43,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:43,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136186665] [2019-11-24 06:03:43,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:43,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:43,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:43,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:43,101 INFO L87 Difference]: Start difference. First operand 566 states and 779 transitions. Second operand 3 states. [2019-11-24 06:03:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:43,251 INFO L93 Difference]: Finished difference Result 1200 states and 1672 transitions. [2019-11-24 06:03:43,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:43,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2019-11-24 06:03:43,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:43,255 INFO L225 Difference]: With dead ends: 1200 [2019-11-24 06:03:43,255 INFO L226 Difference]: Without dead ends: 636 [2019-11-24 06:03:43,257 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 06:03:43,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-11-24 06:03:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 616. [2019-11-24 06:03:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2019-11-24 06:03:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 835 transitions. [2019-11-24 06:03:43,278 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 835 transitions. Word has length 110 [2019-11-24 06:03:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:43,279 INFO L462 AbstractCegarLoop]: Abstraction has 616 states and 835 transitions. [2019-11-24 06:03:43,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 835 transitions. [2019-11-24 06:03:43,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-24 06:03:43,281 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:43,281 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:43,281 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1347065489, now seen corresponding path program 1 times [2019-11-24 06:03:43,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:43,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228222363] [2019-11-24 06:03:43,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-11-24 06:03:43,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228222363] [2019-11-24 06:03:43,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:43,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:43,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300477860] [2019-11-24 06:03:43,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:43,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:43,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:43,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:43,355 INFO L87 Difference]: Start difference. First operand 616 states and 835 transitions. Second operand 3 states. [2019-11-24 06:03:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:43,499 INFO L93 Difference]: Finished difference Result 1288 states and 1736 transitions. [2019-11-24 06:03:43,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:43,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2019-11-24 06:03:43,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:43,504 INFO L225 Difference]: With dead ends: 1288 [2019-11-24 06:03:43,504 INFO L226 Difference]: Without dead ends: 674 [2019-11-24 06:03:43,506 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 06:03:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2019-11-24 06:03:43,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 670. [2019-11-24 06:03:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-11-24 06:03:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 895 transitions. [2019-11-24 06:03:43,528 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 895 transitions. Word has length 132 [2019-11-24 06:03:43,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:43,528 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 895 transitions. [2019-11-24 06:03:43,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 895 transitions. [2019-11-24 06:03:43,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-24 06:03:43,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:43,534 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2019-11-24 06:03:43,534 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1345616156, now seen corresponding path program 1 times [2019-11-24 06:03:43,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:43,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525091946] [2019-11-24 06:03:43,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2019-11-24 06:03:43,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525091946] [2019-11-24 06:03:43,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:43,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:43,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208010916] [2019-11-24 06:03:43,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:43,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:43,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:43,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:43,612 INFO L87 Difference]: Start difference. First operand 670 states and 895 transitions. Second operand 3 states. [2019-11-24 06:03:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:43,834 INFO L93 Difference]: Finished difference Result 1420 states and 1934 transitions. [2019-11-24 06:03:43,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:43,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2019-11-24 06:03:43,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:43,840 INFO L225 Difference]: With dead ends: 1420 [2019-11-24 06:03:43,840 INFO L226 Difference]: Without dead ends: 730 [2019-11-24 06:03:43,842 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 06:03:43,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2019-11-24 06:03:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 728. [2019-11-24 06:03:43,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2019-11-24 06:03:43,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 963 transitions. [2019-11-24 06:03:43,873 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 963 transitions. Word has length 135 [2019-11-24 06:03:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:43,873 INFO L462 AbstractCegarLoop]: Abstraction has 728 states and 963 transitions. [2019-11-24 06:03:43,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 963 transitions. [2019-11-24 06:03:43,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-24 06:03:43,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:43,878 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:43,879 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:43,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:43,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1573395420, now seen corresponding path program 1 times [2019-11-24 06:03:43,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:43,880 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643544894] [2019-11-24 06:03:43,880 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:44,019 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 117 proven. 113 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-24 06:03:44,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643544894] [2019-11-24 06:03:44,020 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585037497] [2019-11-24 06:03:44,020 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 06:03:44,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:44,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-24 06:03:44,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-24 06:03:44,276 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:44,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:44,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:44,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:44,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:44,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:44,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:44,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2019-11-24 06:03:44,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1878301888] [2019-11-24 06:03:44,531 INFO L159 IcfgInterpreter]: Started Sifa with 58 locations of interest [2019-11-24 06:03:44,532 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 06:03:44,539 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 06:03:44,550 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 06:03:44,551 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 06:03:45,006 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2019-11-24 06:03:45,122 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2019-11-24 06:03:45,371 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2019-11-24 06:03:45,708 WARN L192 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 247 [2019-11-24 06:03:46,001 WARN L192 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-11-24 06:03:46,151 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-11-24 06:03:46,264 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2019-11-24 06:03:46,563 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 257 [2019-11-24 06:03:46,897 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 259 [2019-11-24 06:03:47,509 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 258 [2019-11-24 06:03:47,677 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 258 [2019-11-24 06:03:47,781 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 257 [2019-11-24 06:03:48,058 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 291 [2019-11-24 06:03:48,248 WARN L192 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 291 [2019-11-24 06:03:48,432 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 290 [2019-11-24 06:03:48,625 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 341 [2019-11-24 06:03:48,891 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 348 DAG size of output: 348 [2019-11-24 06:03:49,036 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2019-11-24 06:03:49,154 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 263 [2019-11-24 06:03:49,439 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 265 [2019-11-24 06:03:49,578 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 265 [2019-11-24 06:03:49,762 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2019-11-24 06:03:50,236 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 306 [2019-11-24 06:03:50,434 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 321 DAG size of output: 321 [2019-11-24 06:03:50,668 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 299 [2019-11-24 06:03:50,771 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 299 [2019-11-24 06:03:50,874 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 299 [2019-11-24 06:03:51,136 WARN L192 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 382 DAG size of output: 378 [2019-11-24 06:03:51,459 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 377 [2019-11-24 06:03:51,765 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 288 [2019-11-24 06:03:51,994 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 287 [2019-11-24 06:03:52,372 WARN L192 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 306 [2019-11-24 06:03:52,647 WARN L192 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 306 [2019-11-24 06:03:52,923 WARN L192 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2019-11-24 06:03:53,249 WARN L192 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 302 [2019-11-24 06:03:53,517 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 302 [2019-11-24 06:03:53,689 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 302 [2019-11-24 06:03:53,914 WARN L192 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 323 DAG size of output: 323 [2019-11-24 06:03:54,154 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 333 [2019-11-24 06:03:54,330 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 278 [2019-11-24 06:03:54,529 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 278 [2019-11-24 06:03:54,990 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 293 [2019-11-24 06:03:55,271 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 293 [2019-11-24 06:03:55,393 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 290 [2019-11-24 06:03:55,508 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 293 [2019-11-24 06:03:55,629 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 293 [2019-11-24 06:03:55,883 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 314 [2019-11-24 06:03:56,004 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 314 [2019-11-24 06:03:56,119 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 314 [2019-11-24 06:03:56,276 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 328 [2019-11-24 06:03:56,424 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 328 [2019-11-24 06:03:56,578 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2019-11-24 06:03:56,734 WARN L192 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 328 [2019-11-24 06:03:56,878 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 328 DAG size of output: 328 [2019-11-24 06:03:57,033 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 328 [2019-11-24 06:03:57,197 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 301 DAG size of output: 301 [2019-11-24 06:03:57,540 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 326 [2019-11-24 06:03:57,891 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 336 [2019-11-24 06:03:58,114 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 304 [2019-11-24 06:03:58,267 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 304 [2019-11-24 06:03:58,377 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 304 DAG size of output: 304 [2019-11-24 06:03:58,562 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 360 [2019-11-24 06:03:58,717 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 360 [2019-11-24 06:03:58,901 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2019-11-24 06:03:59,052 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 360 [2019-11-24 06:03:59,208 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 360 [2019-11-24 06:03:59,384 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2019-11-24 06:03:59,538 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 360 [2019-11-24 06:03:59,709 WARN L192 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 365 DAG size of output: 360 [2019-11-24 06:03:59,888 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2019-11-24 06:04:00,135 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 306 [2019-11-24 06:04:00,272 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 306 DAG size of output: 306 [2019-11-24 06:04:00,397 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2019-11-24 06:04:00,543 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 307 [2019-11-24 06:04:00,698 WARN L192 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 307 [2019-11-24 06:04:00,836 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2019-11-24 06:04:00,975 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 307 [2019-11-24 06:04:01,117 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 308 DAG size of output: 307 [2019-11-24 06:04:01,248 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 306 [2019-11-24 06:04:01,383 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 282 [2019-11-24 06:04:01,485 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 287 DAG size of output: 282 [2019-11-24 06:04:01,808 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:02,020 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:02,233 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:02,451 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:02,670 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:02,890 WARN L192 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:03,232 WARN L192 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 338 [2019-11-24 06:04:03,448 WARN L192 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 342 DAG size of output: 338 [2019-11-24 06:04:03,675 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2019-11-24 06:04:03,840 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 305 [2019-11-24 06:04:03,970 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 305 [2019-11-24 06:04:04,094 WARN L192 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 303 [2019-11-24 06:04:04,342 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2019-11-24 06:04:04,592 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2019-11-24 06:04:04,846 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 349 [2019-11-24 06:04:05,103 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 351 [2019-11-24 06:04:05,354 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 351 [2019-11-24 06:04:05,608 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2019-11-24 06:04:05,863 WARN L192 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 351 [2019-11-24 06:04:06,119 WARN L192 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 351 [2019-11-24 06:04:06,374 WARN L192 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 351 [2019-11-24 06:04:06,731 WARN L192 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 355 [2019-11-24 06:04:07,015 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 355 DAG size of output: 355 [2019-11-24 06:04:07,281 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2019-11-24 06:04:07,568 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:07,848 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:08,100 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 06:04:08,371 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:08,634 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 343 [2019-11-24 06:04:08,895 WARN L192 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 06:04:09,242 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2019-11-24 06:04:09,524 WARN L192 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2019-11-24 06:04:09,796 WARN L192 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2019-11-24 06:04:09,798 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 06:04:10,480 WARN L192 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2019-11-24 06:04:16,277 WARN L192 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 348 DAG size of output: 243 [2019-11-24 06:04:22,191 WARN L192 SmtUtils]: Spent 5.70 s on a formula simplification. DAG size of input: 334 DAG size of output: 239 [2019-11-24 06:04:25,666 WARN L192 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 343 DAG size of output: 154 [2019-11-24 06:04:27,089 WARN L192 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 306 DAG size of output: 161 [2019-11-24 06:04:32,218 WARN L192 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 339 DAG size of output: 235 [2019-11-24 06:04:37,224 WARN L192 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 341 DAG size of output: 235 [2019-11-24 06:04:45,415 WARN L192 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 344 DAG size of output: 229 [2019-11-24 06:04:47,568 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 350 DAG size of output: 164 [2019-11-24 06:04:49,099 WARN L192 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 352 DAG size of output: 164 [2019-11-24 06:04:57,568 WARN L192 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 351 DAG size of output: 223 [2019-11-24 06:05:05,706 WARN L192 SmtUtils]: Spent 7.44 s on a formula simplification. DAG size of input: 355 DAG size of output: 219