/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_8.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 06:03:41,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 06:03:41,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 06:03:41,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 06:03:41,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 06:03:41,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 06:03:41,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 06:03:41,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 06:03:41,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 06:03:41,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 06:03:41,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 06:03:41,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 06:03:41,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 06:03:41,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 06:03:41,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 06:03:41,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 06:03:41,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 06:03:41,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 06:03:41,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 06:03:41,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 06:03:41,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 06:03:41,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 06:03:41,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 06:03:41,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 06:03:41,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 06:03:41,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 06:03:41,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 06:03:41,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 06:03:41,207 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 06:03:41,231 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 06:03:41,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 06:03:41,234 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 06:03:41,234 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 06:03:41,234 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 06:03:41,234 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 06:03:41,235 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 06:03:41,235 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 06:03:41,235 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 06:03:41,235 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 06:03:41,235 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 06:03:41,235 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 06:03:41,236 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 06:03:41,236 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 06:03:41,236 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 06:03:41,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 06:03:41,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 06:03:41,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 06:03:41,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 06:03:41,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 06:03:41,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 06:03:41,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 06:03:41,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 06:03:41,238 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 06:03:41,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 06:03:41,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 06:03:41,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 06:03:41,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 06:03:41,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 06:03:41,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 06:03:41,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 06:03:41,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 06:03:41,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 06:03:41,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 06:03:41,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 06:03:41,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 06:03:41,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 06:03:41,241 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 06:03:41,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 06:03:41,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 06:03:41,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 06:03:41,597 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 06:03:41,598 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 06:03:41,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_8.cil.c [2019-11-24 06:03:41,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0a6aa95/c3c7d3929dad48cc96a3130a6cbb8527/FLAGacc46168e [2019-11-24 06:03:42,160 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 06:03:42,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_8.cil.c [2019-11-24 06:03:42,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0a6aa95/c3c7d3929dad48cc96a3130a6cbb8527/FLAGacc46168e [2019-11-24 06:03:42,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e0a6aa95/c3c7d3929dad48cc96a3130a6cbb8527 [2019-11-24 06:03:42,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 06:03:42,455 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 06:03:42,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 06:03:42,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 06:03:42,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 06:03:42,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:42,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478ffe6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42, skipping insertion in model container [2019-11-24 06:03:42,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:42,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 06:03:42,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 06:03:42,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:03:42,778 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 06:03:42,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:03:42,936 INFO L208 MainTranslator]: Completed translation [2019-11-24 06:03:42,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42 WrapperNode [2019-11-24 06:03:42,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 06:03:42,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 06:03:42,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 06:03:42,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 06:03:42,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:42,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:42,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 06:03:42,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 06:03:42,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 06:03:42,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 06:03:43,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:43,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:43,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:43,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:43,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:43,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:43,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (1/1) ... [2019-11-24 06:03:43,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 06:03:43,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 06:03:43,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 06:03:43,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 06:03:43,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (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 06:03:43,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 06:03:43,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 06:03:43,273 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 06:03:44,023 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-11-24 06:03:44,023 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-11-24 06:03:44,345 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 06:03:44,345 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 06:03:44,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:03:44 BoogieIcfgContainer [2019-11-24 06:03:44,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 06:03:44,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 06:03:44,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 06:03:44,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 06:03:44,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 06:03:42" (1/3) ... [2019-11-24 06:03:44,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff779cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:03:44, skipping insertion in model container [2019-11-24 06:03:44,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:03:42" (2/3) ... [2019-11-24 06:03:44,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff779cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:03:44, skipping insertion in model container [2019-11-24 06:03:44,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:03:44" (3/3) ... [2019-11-24 06:03:44,355 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_8.cil.c [2019-11-24 06:03:44,365 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 06:03:44,373 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 06:03:44,385 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 06:03:44,411 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 06:03:44,411 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 06:03:44,412 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 06:03:44,412 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 06:03:44,412 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 06:03:44,412 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 06:03:44,412 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 06:03:44,412 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 06:03:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2019-11-24 06:03:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-24 06:03:44,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:44,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:44,437 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:44,442 INFO L82 PathProgramCache]: Analyzing trace with hash -352734867, now seen corresponding path program 1 times [2019-11-24 06:03:44,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:44,452 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931847433] [2019-11-24 06:03:44,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:44,663 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 06:03:44,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931847433] [2019-11-24 06:03:44,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:44,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:03:44,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352793740] [2019-11-24 06:03:44,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:44,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:44,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:44,691 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2019-11-24 06:03:44,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:44,954 INFO L93 Difference]: Finished difference Result 235 states and 408 transitions. [2019-11-24 06:03:44,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:44,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2019-11-24 06:03:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:44,970 INFO L225 Difference]: With dead ends: 235 [2019-11-24 06:03:44,970 INFO L226 Difference]: Without dead ends: 123 [2019-11-24 06:03:44,974 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 06:03:44,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-11-24 06:03:45,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2019-11-24 06:03:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-11-24 06:03:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 178 transitions. [2019-11-24 06:03:45,030 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 178 transitions. Word has length 37 [2019-11-24 06:03:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:45,031 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 178 transitions. [2019-11-24 06:03:45,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 178 transitions. [2019-11-24 06:03:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-24 06:03:45,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:45,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:45,034 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:45,035 INFO L82 PathProgramCache]: Analyzing trace with hash 132671285, now seen corresponding path program 1 times [2019-11-24 06:03:45,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:45,035 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250223507] [2019-11-24 06:03:45,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:45,123 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 06:03:45,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250223507] [2019-11-24 06:03:45,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:45,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:45,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346502252] [2019-11-24 06:03:45,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:45,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:45,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:45,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:45,129 INFO L87 Difference]: Start difference. First operand 121 states and 178 transitions. Second operand 3 states. [2019-11-24 06:03:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:45,333 INFO L93 Difference]: Finished difference Result 261 states and 390 transitions. [2019-11-24 06:03:45,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:45,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2019-11-24 06:03:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:45,336 INFO L225 Difference]: With dead ends: 261 [2019-11-24 06:03:45,336 INFO L226 Difference]: Without dead ends: 142 [2019-11-24 06:03:45,338 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 06:03:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-24 06:03:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2019-11-24 06:03:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-24 06:03:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 200 transitions. [2019-11-24 06:03:45,352 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 200 transitions. Word has length 51 [2019-11-24 06:03:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:45,352 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 200 transitions. [2019-11-24 06:03:45,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 200 transitions. [2019-11-24 06:03:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-24 06:03:45,356 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:45,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:45,357 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:45,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1275337279, now seen corresponding path program 1 times [2019-11-24 06:03:45,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:45,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322978197] [2019-11-24 06:03:45,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:45,514 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 06:03:45,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322978197] [2019-11-24 06:03:45,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:45,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 06:03:45,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815922255] [2019-11-24 06:03:45,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 06:03:45,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:45,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 06:03:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:03:45,518 INFO L87 Difference]: Start difference. First operand 140 states and 200 transitions. Second operand 4 states. [2019-11-24 06:03:45,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:45,809 INFO L93 Difference]: Finished difference Result 352 states and 528 transitions. [2019-11-24 06:03:45,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 06:03:45,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2019-11-24 06:03:45,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:45,812 INFO L225 Difference]: With dead ends: 352 [2019-11-24 06:03:45,813 INFO L226 Difference]: Without dead ends: 214 [2019-11-24 06:03:45,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:03:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-11-24 06:03:45,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2019-11-24 06:03:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2019-11-24 06:03:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 271 transitions. [2019-11-24 06:03:45,829 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 271 transitions. Word has length 68 [2019-11-24 06:03:45,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:45,829 INFO L462 AbstractCegarLoop]: Abstraction has 198 states and 271 transitions. [2019-11-24 06:03:45,829 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 06:03:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 271 transitions. [2019-11-24 06:03:45,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-24 06:03:45,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:45,832 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:45,833 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash -921996691, now seen corresponding path program 1 times [2019-11-24 06:03:45,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:45,834 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351857363] [2019-11-24 06:03:45,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-24 06:03:45,942 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351857363] [2019-11-24 06:03:45,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:45,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:45,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404389899] [2019-11-24 06:03:45,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:45,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:45,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:45,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:45,944 INFO L87 Difference]: Start difference. First operand 198 states and 271 transitions. Second operand 3 states. [2019-11-24 06:03:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:46,083 INFO L93 Difference]: Finished difference Result 409 states and 564 transitions. [2019-11-24 06:03:46,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:46,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2019-11-24 06:03:46,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:46,086 INFO L225 Difference]: With dead ends: 409 [2019-11-24 06:03:46,086 INFO L226 Difference]: Without dead ends: 213 [2019-11-24 06:03:46,091 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 06:03:46,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-11-24 06:03:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2019-11-24 06:03:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-11-24 06:03:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 287 transitions. [2019-11-24 06:03:46,117 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 287 transitions. Word has length 77 [2019-11-24 06:03:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:46,118 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 287 transitions. [2019-11-24 06:03:46,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:46,120 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 287 transitions. [2019-11-24 06:03:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-24 06:03:46,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:46,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:46,127 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:46,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:46,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1846451617, now seen corresponding path program 1 times [2019-11-24 06:03:46,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:46,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123822060] [2019-11-24 06:03:46,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:46,197 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 06:03:46,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123822060] [2019-11-24 06:03:46,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:46,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:46,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481765551] [2019-11-24 06:03:46,199 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:46,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:46,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:46,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:46,200 INFO L87 Difference]: Start difference. First operand 211 states and 287 transitions. Second operand 3 states. [2019-11-24 06:03:46,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:46,324 INFO L93 Difference]: Finished difference Result 453 states and 630 transitions. [2019-11-24 06:03:46,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:46,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-11-24 06:03:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:46,327 INFO L225 Difference]: With dead ends: 453 [2019-11-24 06:03:46,327 INFO L226 Difference]: Without dead ends: 244 [2019-11-24 06:03:46,328 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 06:03:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2019-11-24 06:03:46,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 234. [2019-11-24 06:03:46,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2019-11-24 06:03:46,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 313 transitions. [2019-11-24 06:03:46,340 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 313 transitions. Word has length 88 [2019-11-24 06:03:46,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:46,340 INFO L462 AbstractCegarLoop]: Abstraction has 234 states and 313 transitions. [2019-11-24 06:03:46,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 313 transitions. [2019-11-24 06:03:46,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-24 06:03:46,342 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:46,342 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:46,343 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:46,343 INFO L82 PathProgramCache]: Analyzing trace with hash 120353238, now seen corresponding path program 1 times [2019-11-24 06:03:46,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:46,344 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835890475] [2019-11-24 06:03:46,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-24 06:03:46,415 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835890475] [2019-11-24 06:03:46,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:46,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:46,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996913063] [2019-11-24 06:03:46,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:46,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:46,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:46,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:46,419 INFO L87 Difference]: Start difference. First operand 234 states and 313 transitions. Second operand 3 states. [2019-11-24 06:03:46,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:46,590 INFO L93 Difference]: Finished difference Result 534 states and 730 transitions. [2019-11-24 06:03:46,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:46,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-11-24 06:03:46,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:46,593 INFO L225 Difference]: With dead ends: 534 [2019-11-24 06:03:46,593 INFO L226 Difference]: Without dead ends: 299 [2019-11-24 06:03:46,594 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 06:03:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2019-11-24 06:03:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2019-11-24 06:03:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2019-11-24 06:03:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 402 transitions. [2019-11-24 06:03:46,605 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 402 transitions. Word has length 88 [2019-11-24 06:03:46,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:46,605 INFO L462 AbstractCegarLoop]: Abstraction has 295 states and 402 transitions. [2019-11-24 06:03:46,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 402 transitions. [2019-11-24 06:03:46,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-11-24 06:03:46,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:46,608 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, 1, 1] [2019-11-24 06:03:46,608 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:46,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:46,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1942704014, now seen corresponding path program 1 times [2019-11-24 06:03:46,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:46,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070354850] [2019-11-24 06:03:46,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:46,671 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 06:03:46,672 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070354850] [2019-11-24 06:03:46,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:46,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:46,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322150208] [2019-11-24 06:03:46,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:46,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:46,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:46,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:46,674 INFO L87 Difference]: Start difference. First operand 295 states and 402 transitions. Second operand 3 states. [2019-11-24 06:03:46,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:46,810 INFO L93 Difference]: Finished difference Result 621 states and 858 transitions. [2019-11-24 06:03:46,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:46,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2019-11-24 06:03:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:46,813 INFO L225 Difference]: With dead ends: 621 [2019-11-24 06:03:46,813 INFO L226 Difference]: Without dead ends: 328 [2019-11-24 06:03:46,814 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 06:03:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-11-24 06:03:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2019-11-24 06:03:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-24 06:03:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 430 transitions. [2019-11-24 06:03:46,825 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 430 transitions. Word has length 112 [2019-11-24 06:03:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:46,825 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 430 transitions. [2019-11-24 06:03:46,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 430 transitions. [2019-11-24 06:03:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-24 06:03:46,827 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:46,828 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2019-11-24 06:03:46,828 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1594478839, now seen corresponding path program 1 times [2019-11-24 06:03:46,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:46,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107272839] [2019-11-24 06:03:46,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-11-24 06:03:46,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107272839] [2019-11-24 06:03:46,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:46,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:46,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471223017] [2019-11-24 06:03:46,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:46,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:46,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:46,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:46,893 INFO L87 Difference]: Start difference. First operand 320 states and 430 transitions. Second operand 3 states. [2019-11-24 06:03:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:47,095 INFO L93 Difference]: Finished difference Result 645 states and 868 transitions. [2019-11-24 06:03:47,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:47,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-11-24 06:03:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:47,098 INFO L225 Difference]: With dead ends: 645 [2019-11-24 06:03:47,098 INFO L226 Difference]: Without dead ends: 326 [2019-11-24 06:03:47,099 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 06:03:47,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-11-24 06:03:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 323. [2019-11-24 06:03:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2019-11-24 06:03:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 432 transitions. [2019-11-24 06:03:47,110 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 432 transitions. Word has length 126 [2019-11-24 06:03:47,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:47,110 INFO L462 AbstractCegarLoop]: Abstraction has 323 states and 432 transitions. [2019-11-24 06:03:47,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:47,110 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 432 transitions. [2019-11-24 06:03:47,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-24 06:03:47,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:47,112 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, 1, 1] [2019-11-24 06:03:47,112 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:47,113 INFO L82 PathProgramCache]: Analyzing trace with hash 546000958, now seen corresponding path program 1 times [2019-11-24 06:03:47,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:47,113 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849521353] [2019-11-24 06:03:47,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:47,166 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 06:03:47,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849521353] [2019-11-24 06:03:47,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:47,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:47,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852206692] [2019-11-24 06:03:47,171 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:47,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:47,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:47,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:47,173 INFO L87 Difference]: Start difference. First operand 323 states and 432 transitions. Second operand 3 states. [2019-11-24 06:03:47,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:47,306 INFO L93 Difference]: Finished difference Result 673 states and 911 transitions. [2019-11-24 06:03:47,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:47,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2019-11-24 06:03:47,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:47,309 INFO L225 Difference]: With dead ends: 673 [2019-11-24 06:03:47,309 INFO L226 Difference]: Without dead ends: 352 [2019-11-24 06:03:47,309 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 06:03:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2019-11-24 06:03:47,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2019-11-24 06:03:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2019-11-24 06:03:47,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 462 transitions. [2019-11-24 06:03:47,321 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 462 transitions. Word has length 134 [2019-11-24 06:03:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:47,321 INFO L462 AbstractCegarLoop]: Abstraction has 350 states and 462 transitions. [2019-11-24 06:03:47,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 462 transitions. [2019-11-24 06:03:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-24 06:03:47,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:47,323 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:47,323 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:47,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:47,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1805075614, now seen corresponding path program 1 times [2019-11-24 06:03:47,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:47,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757402174] [2019-11-24 06:03:47,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:47,388 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 06:03:47,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757402174] [2019-11-24 06:03:47,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:47,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:47,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079305999] [2019-11-24 06:03:47,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:47,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:47,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:47,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:47,394 INFO L87 Difference]: Start difference. First operand 350 states and 462 transitions. Second operand 3 states. [2019-11-24 06:03:47,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:47,547 INFO L93 Difference]: Finished difference Result 727 states and 973 transitions. [2019-11-24 06:03:47,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:47,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2019-11-24 06:03:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:47,553 INFO L225 Difference]: With dead ends: 727 [2019-11-24 06:03:47,553 INFO L226 Difference]: Without dead ends: 379 [2019-11-24 06:03:47,557 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 06:03:47,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2019-11-24 06:03:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2019-11-24 06:03:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-11-24 06:03:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 494 transitions. [2019-11-24 06:03:47,570 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 494 transitions. Word has length 139 [2019-11-24 06:03:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:47,570 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 494 transitions. [2019-11-24 06:03:47,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 494 transitions. [2019-11-24 06:03:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-24 06:03:47,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:47,573 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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, 1] [2019-11-24 06:03:47,573 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:47,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1778409280, now seen corresponding path program 1 times [2019-11-24 06:03:47,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:47,574 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231351049] [2019-11-24 06:03:47,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 164 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-11-24 06:03:47,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231351049] [2019-11-24 06:03:47,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85613599] [2019-11-24 06:03:47,693 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 06:03:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:47,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-24 06:03:47,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:47,860 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-11-24 06:03:47,861 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:47,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:47,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2019-11-24 06:03:47,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 06:03:47,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 8 [2019-11-24 06:03:47,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152431622] [2019-11-24 06:03:47,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:47,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:47,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:47,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 06:03:47,957 INFO L87 Difference]: Start difference. First operand 379 states and 494 transitions. Second operand 3 states. [2019-11-24 06:03:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:47,998 INFO L93 Difference]: Finished difference Result 755 states and 985 transitions. [2019-11-24 06:03:47,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:47,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2019-11-24 06:03:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:48,004 INFO L225 Difference]: With dead ends: 755 [2019-11-24 06:03:48,004 INFO L226 Difference]: Without dead ends: 753 [2019-11-24 06:03:48,005 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 326 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 06:03:48,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2019-11-24 06:03:48,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 687. [2019-11-24 06:03:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2019-11-24 06:03:48,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 909 transitions. [2019-11-24 06:03:48,047 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 909 transitions. Word has length 166 [2019-11-24 06:03:48,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:48,048 INFO L462 AbstractCegarLoop]: Abstraction has 687 states and 909 transitions. [2019-11-24 06:03:48,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 909 transitions. [2019-11-24 06:03:48,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-24 06:03:48,051 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:48,051 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, 4, 4, 4, 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, 1, 1, 1, 1] [2019-11-24 06:03:48,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:48,257 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:48,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:48,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1924334460, now seen corresponding path program 1 times [2019-11-24 06:03:48,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:48,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871518349] [2019-11-24 06:03:48,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-24 06:03:48,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871518349] [2019-11-24 06:03:48,372 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173323369] [2019-11-24 06:03:48,372 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 06:03:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:48,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-24 06:03:48,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-24 06:03:48,528 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:48,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:48,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:48,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:48,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:48,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:48,579 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:48,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:48,647 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-24 06:03:48,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 06:03:48,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 10 [2019-11-24 06:03:48,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938272708] [2019-11-24 06:03:48,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-24 06:03:48,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:48,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-24 06:03:48,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-24 06:03:48,761 INFO L87 Difference]: Start difference. First operand 687 states and 909 transitions. Second operand 7 states. [2019-11-24 06:03:48,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:48,876 INFO L93 Difference]: Finished difference Result 2462 states and 3246 transitions. [2019-11-24 06:03:48,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 06:03:48,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2019-11-24 06:03:48,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:48,886 INFO L225 Difference]: With dead ends: 2462 [2019-11-24 06:03:48,886 INFO L226 Difference]: Without dead ends: 1777 [2019-11-24 06:03:48,888 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-24 06:03:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2019-11-24 06:03:48,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1373. [2019-11-24 06:03:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2019-11-24 06:03:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1817 transitions. [2019-11-24 06:03:48,931 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1817 transitions. Word has length 171 [2019-11-24 06:03:48,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:48,932 INFO L462 AbstractCegarLoop]: Abstraction has 1373 states and 1817 transitions. [2019-11-24 06:03:48,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-24 06:03:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1817 transitions. [2019-11-24 06:03:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2019-11-24 06:03:48,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:48,944 INFO L410 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:49,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:49,148 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:49,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1354232873, now seen corresponding path program 1 times [2019-11-24 06:03:49,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:49,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850379176] [2019-11-24 06:03:49,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 710 proven. 25 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-11-24 06:03:49,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850379176] [2019-11-24 06:03:49,292 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286567761] [2019-11-24 06:03:49,292 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 06:03:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:49,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-24 06:03:49,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 548 proven. 135 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2019-11-24 06:03:49,557 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:49,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:49,602 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1034 backedges. 548 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2019-11-24 06:03:49,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 06:03:49,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4] total 8 [2019-11-24 06:03:49,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596062015] [2019-11-24 06:03:49,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:49,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:49,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:49,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 06:03:49,765 INFO L87 Difference]: Start difference. First operand 1373 states and 1817 transitions. Second operand 3 states. [2019-11-24 06:03:49,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:49,832 INFO L93 Difference]: Finished difference Result 2433 states and 3213 transitions. [2019-11-24 06:03:49,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:49,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 293 [2019-11-24 06:03:49,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:49,844 INFO L225 Difference]: With dead ends: 2433 [2019-11-24 06:03:49,844 INFO L226 Difference]: Without dead ends: 1748 [2019-11-24 06:03:49,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 580 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 06:03:49,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2019-11-24 06:03:49,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1681. [2019-11-24 06:03:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1681 states. [2019-11-24 06:03:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2230 transitions. [2019-11-24 06:03:49,903 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2230 transitions. Word has length 293 [2019-11-24 06:03:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:49,904 INFO L462 AbstractCegarLoop]: Abstraction has 1681 states and 2230 transitions. [2019-11-24 06:03:49,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:49,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2230 transitions. [2019-11-24 06:03:49,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2019-11-24 06:03:49,911 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:49,911 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 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] [2019-11-24 06:03:50,115 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:50,116 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:50,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1438226541, now seen corresponding path program 1 times [2019-11-24 06:03:50,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:50,117 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639853750] [2019-11-24 06:03:50,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 553 proven. 316 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2019-11-24 06:03:50,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639853750] [2019-11-24 06:03:50,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950723802] [2019-11-24 06:03:50,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:50,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-24 06:03:50,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:03:50,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:50,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 631 proven. 151 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2019-11-24 06:03:50,642 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:03:50,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:03:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 682 proven. 100 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2019-11-24 06:03:50,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2038809237] [2019-11-24 06:03:50,883 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2019-11-24 06:03:50,884 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 06:03:50,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 06:03:50,900 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 06:03:50,900 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 06:03:51,410 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2019-11-24 06:03:51,522 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2019-11-24 06:03:51,744 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 226 [2019-11-24 06:03:51,960 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 253 DAG size of output: 253 [2019-11-24 06:03:52,184 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 304 [2019-11-24 06:03:52,325 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 304 [2019-11-24 06:03:52,767 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 317 [2019-11-24 06:03:52,900 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 317 [2019-11-24 06:03:53,029 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2019-11-24 06:03:53,198 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:53,425 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:53,570 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:53,722 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:53,866 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:54,006 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2019-11-24 06:03:54,241 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 337 [2019-11-24 06:03:54,518 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 338 [2019-11-24 06:03:54,763 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 331 [2019-11-24 06:03:54,899 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 343 DAG size of output: 331 [2019-11-24 06:03:55,008 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-24 06:03:55,128 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-24 06:03:55,279 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-24 06:03:55,503 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-24 06:03:55,638 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 329 [2019-11-24 06:03:55,944 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 347 [2019-11-24 06:03:56,129 WARN L192 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 349 DAG size of output: 347 [2019-11-24 06:03:56,263 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2019-11-24 06:03:56,413 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2019-11-24 06:03:56,564 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2019-11-24 06:03:56,695 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 346 [2019-11-24 06:03:57,009 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 374 [2019-11-24 06:03:57,450 WARN L192 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 375 DAG size of output: 375 [2019-11-24 06:03:57,700 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 242 [2019-11-24 06:03:57,803 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 246 DAG size of output: 242 [2019-11-24 06:03:57,921 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-11-24 06:03:58,099 WARN L192 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-11-24 06:03:58,345 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-11-24 06:03:58,599 WARN L192 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-11-24 06:03:58,897 WARN L192 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2019-11-24 06:03:59,189 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2019-11-24 06:03:59,472 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 252 [2019-11-24 06:04:00,155 WARN L192 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 312 [2019-11-24 06:04:00,574 WARN L192 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 314 DAG size of output: 312 [2019-11-24 06:04:00,810 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2019-11-24 06:04:01,305 WARN L192 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2019-11-24 06:04:01,908 WARN L192 SmtUtils]: Spent 600.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2019-11-24 06:04:02,523 WARN L192 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2019-11-24 06:04:03,403 WARN L192 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 410 DAG size of output: 406 [2019-11-24 06:04:04,474 WARN L192 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 406 DAG size of output: 403 [2019-11-24 06:04:04,741 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 394 DAG size of output: 350 [2019-11-24 06:04:04,860 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 394 DAG size of output: 350 [2019-11-24 06:04:04,964 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 348 [2019-11-24 06:04:05,095 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 350 [2019-11-24 06:04:05,209 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 350 [2019-11-24 06:04:05,315 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2019-11-24 06:04:05,541 WARN L192 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 381 [2019-11-24 06:04:05,764 WARN L192 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 381 [2019-11-24 06:04:06,005 WARN L192 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 380 [2019-11-24 06:04:06,287 WARN L192 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 391 [2019-11-24 06:04:06,539 WARN L192 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 391 DAG size of output: 391 [2019-11-24 06:04:06,797 WARN L192 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2019-11-24 06:04:07,086 WARN L192 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2019-11-24 06:04:07,369 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2019-11-24 06:04:07,642 WARN L192 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2019-11-24 06:04:08,261 WARN L192 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 458 DAG size of output: 454 [2019-11-24 06:04:09,094 WARN L192 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 451 DAG size of output: 451 [2019-11-24 06:04:09,595 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 383 [2019-11-24 06:04:09,892 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 442 DAG size of output: 383 [2019-11-24 06:04:10,131 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 378 [2019-11-24 06:04:10,417 WARN L192 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 394 DAG size of output: 390 [2019-11-24 06:04:10,681 WARN L192 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 394 DAG size of output: 390 [2019-11-24 06:04:10,987 WARN L192 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 390 [2019-11-24 06:04:11,374 WARN L192 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 417 DAG size of output: 416 [2019-11-24 06:04:11,755 WARN L192 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 417 DAG size of output: 416 [2019-11-24 06:04:12,145 WARN L192 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 415 DAG size of output: 415 [2019-11-24 06:04:12,645 WARN L192 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 439 [2019-11-24 06:04:13,127 WARN L192 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 439 [2019-11-24 06:04:13,624 WARN L192 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 438 [2019-11-24 06:04:14,196 WARN L192 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-11-24 06:04:14,755 WARN L192 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-11-24 06:04:15,312 WARN L192 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 455 [2019-11-24 06:04:15,977 WARN L192 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 455 DAG size of output: 455 [2019-11-24 06:04:16,508 WARN L192 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 455 DAG size of output: 455 [2019-11-24 06:04:17,059 WARN L192 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 454 [2019-11-24 06:04:17,383 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 331 [2019-11-24 06:04:17,673 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 331 [2019-11-24 06:04:17,993 WARN L192 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 329 [2019-11-24 06:04:18,293 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 331 [2019-11-24 06:04:18,608 WARN L192 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 331 [2019-11-24 06:04:18,930 WARN L192 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 329 [2019-11-24 06:04:19,267 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2019-11-24 06:04:19,557 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2019-11-24 06:04:19,848 WARN L192 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2019-11-24 06:04:20,159 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 06:04:20,453 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 06:04:20,746 WARN L192 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 06:04:21,044 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 06:04:21,339 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 06:04:21,650 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-24 06:04:21,953 WARN L192 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 290 [2019-11-24 06:04:22,114 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 290 [2019-11-24 06:04:22,276 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 290 [2019-11-24 06:04:22,669 WARN L192 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 325 [2019-11-24 06:04:22,940 WARN L192 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 325 [2019-11-24 06:04:23,244 WARN L192 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 325 [2019-11-24 06:04:23,757 WARN L192 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 420 [2019-11-24 06:04:24,166 WARN L192 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 432 DAG size of output: 420 [2019-11-24 06:04:24,572 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 418 [2019-11-24 06:04:25,197 WARN L192 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 464 DAG size of output: 456 [2019-11-24 06:04:25,728 WARN L192 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 464 DAG size of output: 456 [2019-11-24 06:04:26,256 WARN L192 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 453 [2019-11-24 06:04:26,882 WARN L192 SmtUtils]: Spent 555.00 ms on a formula simplification that was a NOOP. DAG size: 470 [2019-11-24 06:04:27,448 WARN L192 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 470 [2019-11-24 06:04:28,025 WARN L192 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 470 [2019-11-24 06:04:28,027 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 06:04:28,743 WARN L192 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2019-11-24 06:04:35,135 WARN L192 SmtUtils]: Spent 6.24 s on a formula simplification. DAG size of input: 433 DAG size of output: 232 [2019-11-24 06:04:39,353 WARN L192 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 311 DAG size of output: 224 [2019-11-24 06:04:42,202 WARN L192 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 332 DAG size of output: 152 [2019-11-24 06:04:43,698 WARN L192 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 330 DAG size of output: 155 [2019-11-24 06:04:49,490 WARN L192 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 446 DAG size of output: 230 [2019-11-24 06:04:55,021 WARN L192 SmtUtils]: Spent 5.28 s on a formula simplification. DAG size of input: 432 DAG size of output: 225 [2019-11-24 06:05:01,397 WARN L192 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 333 DAG size of output: 212 [2019-11-24 06:05:03,810 WARN L192 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 339 DAG size of output: 164 [2019-11-24 06:05:05,625 WARN L192 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 333 DAG size of output: 166