/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/product-lines/elevator_spec9_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:47:44,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:47:44,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:47:44,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:47:44,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:47:44,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:47:44,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:47:44,309 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:47:44,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:47:44,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:47:44,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:47:44,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:47:44,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:47:44,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:47:44,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:47:44,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:47:44,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:47:44,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:47:44,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:47:44,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:47:44,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:47:44,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:47:44,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:47:44,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:47:44,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:47:44,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:47:44,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:47:44,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:47:44,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:47:44,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:47:44,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:47:44,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:47:44,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:47:44,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:47:44,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:47:44,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:47:44,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:47:44,387 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:47:44,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:47:44,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:47:44,390 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:47:44,390 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:47:44,390 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:47:44,390 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:47:44,390 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:47:44,391 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:47:44,391 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:47:44,391 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:47:44,391 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:47:44,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:47:44,392 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:47:44,392 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:47:44,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:47:44,394 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:47:44,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:47:44,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:47:44,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:47:44,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:47:44,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:47:44,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:47:44,396 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:47:44,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:47:44,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:47:44,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:47:44,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:47:44,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:47:44,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:47:44,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:47:44,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:47:44,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:47:44,398 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:47:44,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:47:44,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:47:44,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:47:44,400 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:47:44,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:47:44,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:47:44,745 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:47:44,746 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:47:44,747 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:47:44,748 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-11-24 04:47:44,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4388f0d1/a1f10ffe194e4bc086ef0ae4c7074f69/FLAG4005f3599 [2019-11-24 04:47:45,417 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:47:45,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product28.cil.c [2019-11-24 04:47:45,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4388f0d1/a1f10ffe194e4bc086ef0ae4c7074f69/FLAG4005f3599 [2019-11-24 04:47:45,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4388f0d1/a1f10ffe194e4bc086ef0ae4c7074f69 [2019-11-24 04:47:45,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:47:45,677 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:47:45,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:47:45,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:47:45,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:47:45,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:47:45" (1/1) ... [2019-11-24 04:47:45,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12954213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:45, skipping insertion in model container [2019-11-24 04:47:45,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:47:45" (1/1) ... [2019-11-24 04:47:45,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:47:45,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:47:46,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:47:46,644 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:47:46,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:47:46,883 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:47:46,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46 WrapperNode [2019-11-24 04:47:46,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:47:46,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:47:46,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:47:46,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:47:46,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:46,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:47,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:47:47,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:47:47,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:47:47,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:47:47,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:47,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:47,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:47,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:47,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:47,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:47,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... [2019-11-24 04:47:47,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:47:47,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:47:47,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:47:47,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:47:47,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:47:47,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:47:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:47:47,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:47:47,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:48:44,167 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:48:44,168 INFO L284 CfgBuilder]: Removed 1233 assume(true) statements. [2019-11-24 04:48:44,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:48:44 BoogieIcfgContainer [2019-11-24 04:48:44,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:48:44,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:48:44,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:48:44,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:48:44,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:47:45" (1/3) ... [2019-11-24 04:48:44,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296bedbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:48:44, skipping insertion in model container [2019-11-24 04:48:44,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:47:46" (2/3) ... [2019-11-24 04:48:44,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296bedbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:48:44, skipping insertion in model container [2019-11-24 04:48:44,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:48:44" (3/3) ... [2019-11-24 04:48:44,179 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2019-11-24 04:48:44,188 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:48:44,198 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-24 04:48:44,207 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-24 04:48:44,257 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:48:44,258 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:48:44,258 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:48:44,258 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:48:44,258 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:48:44,259 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:48:44,259 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:48:44,259 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:48:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states. [2019-11-24 04:48:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 04:48:44,318 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:44,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:48:44,319 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:44,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:44,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1100499322, now seen corresponding path program 1 times [2019-11-24 04:48:44,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:44,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991868989] [2019-11-24 04:48:44,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:48:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:48:44,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991868989] [2019-11-24 04:48:44,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:48:44,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:48:44,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976034642] [2019-11-24 04:48:44,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:48:44,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:48:44,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:48:44,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:48:44,758 INFO L87 Difference]: Start difference. First operand 1445 states. Second operand 2 states. [2019-11-24 04:48:44,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:48:44,857 INFO L93 Difference]: Finished difference Result 1462 states and 2811 transitions. [2019-11-24 04:48:44,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:48:44,859 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-24 04:48:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:48:44,892 INFO L225 Difference]: With dead ends: 1462 [2019-11-24 04:48:44,892 INFO L226 Difference]: Without dead ends: 1443 [2019-11-24 04:48:44,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:48:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2019-11-24 04:48:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2019-11-24 04:48:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2019-11-24 04:48:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2781 transitions. [2019-11-24 04:48:45,061 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2781 transitions. Word has length 10 [2019-11-24 04:48:45,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:48:45,062 INFO L462 AbstractCegarLoop]: Abstraction has 1443 states and 2781 transitions. [2019-11-24 04:48:45,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:48:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2781 transitions. [2019-11-24 04:48:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 04:48:45,072 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:45,072 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:48:45,073 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:45,073 INFO L82 PathProgramCache]: Analyzing trace with hash -361947287, now seen corresponding path program 1 times [2019-11-24 04:48:45,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:45,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468613310] [2019-11-24 04:48:45,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:48:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:48:45,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468613310] [2019-11-24 04:48:45,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:48:45,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:48:45,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764418106] [2019-11-24 04:48:45,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:48:45,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:48:45,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:48:45,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:48:45,280 INFO L87 Difference]: Start difference. First operand 1443 states and 2781 transitions. Second operand 3 states. [2019-11-24 04:48:45,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:48:45,780 INFO L93 Difference]: Finished difference Result 2533 states and 4873 transitions. [2019-11-24 04:48:45,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:48:45,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-24 04:48:45,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:48:45,792 INFO L225 Difference]: With dead ends: 2533 [2019-11-24 04:48:45,792 INFO L226 Difference]: Without dead ends: 1802 [2019-11-24 04:48:45,797 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 04:48:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2019-11-24 04:48:45,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1728. [2019-11-24 04:48:45,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2019-11-24 04:48:45,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 3325 transitions. [2019-11-24 04:48:45,848 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 3325 transitions. Word has length 11 [2019-11-24 04:48:45,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:48:45,848 INFO L462 AbstractCegarLoop]: Abstraction has 1728 states and 3325 transitions. [2019-11-24 04:48:45,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:48:45,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 3325 transitions. [2019-11-24 04:48:45,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-24 04:48:45,850 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:45,850 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:48:45,850 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:45,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:45,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1664566073, now seen corresponding path program 1 times [2019-11-24 04:48:45,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:45,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291343448] [2019-11-24 04:48:45,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:48:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:48:45,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291343448] [2019-11-24 04:48:45,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:48:45,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:48:45,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041147721] [2019-11-24 04:48:45,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:48:45,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:48:45,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:48:45,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:48:45,927 INFO L87 Difference]: Start difference. First operand 1728 states and 3325 transitions. Second operand 3 states. [2019-11-24 04:48:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:48:46,435 INFO L93 Difference]: Finished difference Result 3514 states and 6753 transitions. [2019-11-24 04:48:46,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:48:46,436 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-11-24 04:48:46,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:48:46,449 INFO L225 Difference]: With dead ends: 3514 [2019-11-24 04:48:46,450 INFO L226 Difference]: Without dead ends: 2511 [2019-11-24 04:48:46,453 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 04:48:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2019-11-24 04:48:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2287. [2019-11-24 04:48:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2019-11-24 04:48:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 4393 transitions. [2019-11-24 04:48:46,526 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 4393 transitions. Word has length 12 [2019-11-24 04:48:46,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:48:46,527 INFO L462 AbstractCegarLoop]: Abstraction has 2287 states and 4393 transitions. [2019-11-24 04:48:46,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:48:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 4393 transitions. [2019-11-24 04:48:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:48:46,529 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:46,529 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:48:46,530 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:46,531 INFO L82 PathProgramCache]: Analyzing trace with hash 61970802, now seen corresponding path program 1 times [2019-11-24 04:48:46,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:46,532 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453805770] [2019-11-24 04:48:46,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:48:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:48:46,639 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453805770] [2019-11-24 04:48:46,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:48:46,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:48:46,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737908918] [2019-11-24 04:48:46,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:48:46,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:48:46,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:48:46,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:48:46,641 INFO L87 Difference]: Start difference. First operand 2287 states and 4393 transitions. Second operand 3 states. [2019-11-24 04:48:47,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:48:47,135 INFO L93 Difference]: Finished difference Result 3836 states and 7363 transitions. [2019-11-24 04:48:47,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:48:47,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 04:48:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:48:47,151 INFO L225 Difference]: With dead ends: 3836 [2019-11-24 04:48:47,151 INFO L226 Difference]: Without dead ends: 2285 [2019-11-24 04:48:47,154 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 04:48:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2019-11-24 04:48:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 2285. [2019-11-24 04:48:47,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2285 states. [2019-11-24 04:48:47,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 4383 transitions. [2019-11-24 04:48:47,662 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 4383 transitions. Word has length 13 [2019-11-24 04:48:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:48:47,663 INFO L462 AbstractCegarLoop]: Abstraction has 2285 states and 4383 transitions. [2019-11-24 04:48:47,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:48:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 4383 transitions. [2019-11-24 04:48:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-24 04:48:47,664 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:47,665 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:48:47,665 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:47,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:47,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1921124962, now seen corresponding path program 1 times [2019-11-24 04:48:47,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:47,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423664402] [2019-11-24 04:48:47,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:48:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:48:47,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423664402] [2019-11-24 04:48:47,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:48:47,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:48:47,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656152977] [2019-11-24 04:48:47,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:48:47,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:48:47,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:48:47,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:48:47,751 INFO L87 Difference]: Start difference. First operand 2285 states and 4383 transitions. Second operand 3 states. [2019-11-24 04:48:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:48:48,325 INFO L93 Difference]: Finished difference Result 5235 states and 10030 transitions. [2019-11-24 04:48:48,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:48:48,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-11-24 04:48:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:48:48,346 INFO L225 Difference]: With dead ends: 5235 [2019-11-24 04:48:48,346 INFO L226 Difference]: Without dead ends: 3689 [2019-11-24 04:48:48,350 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 04:48:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2019-11-24 04:48:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3389. [2019-11-24 04:48:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3389 states. [2019-11-24 04:48:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3389 states to 3389 states and 6484 transitions. [2019-11-24 04:48:48,497 INFO L78 Accepts]: Start accepts. Automaton has 3389 states and 6484 transitions. Word has length 14 [2019-11-24 04:48:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:48:48,497 INFO L462 AbstractCegarLoop]: Abstraction has 3389 states and 6484 transitions. [2019-11-24 04:48:48,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:48:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3389 states and 6484 transitions. [2019-11-24 04:48:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-24 04:48:48,500 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:48,500 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:48:48,500 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:48,501 INFO L82 PathProgramCache]: Analyzing trace with hash -574638213, now seen corresponding path program 1 times [2019-11-24 04:48:48,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:48,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392078245] [2019-11-24 04:48:48,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:48:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:48:48,588 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392078245] [2019-11-24 04:48:48,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:48:48,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:48:48,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501397723] [2019-11-24 04:48:48,590 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:48:48,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:48:48,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:48:48,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:48:48,591 INFO L87 Difference]: Start difference. First operand 3389 states and 6484 transitions. Second operand 3 states. [2019-11-24 04:48:49,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:48:49,122 INFO L93 Difference]: Finished difference Result 3389 states and 6484 transitions. [2019-11-24 04:48:49,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:48:49,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-24 04:48:49,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:48:49,141 INFO L225 Difference]: With dead ends: 3389 [2019-11-24 04:48:49,141 INFO L226 Difference]: Without dead ends: 3382 [2019-11-24 04:48:49,143 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 04:48:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2019-11-24 04:48:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3382. [2019-11-24 04:48:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3382 states. [2019-11-24 04:48:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 6472 transitions. [2019-11-24 04:48:49,300 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 6472 transitions. Word has length 15 [2019-11-24 04:48:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:48:49,301 INFO L462 AbstractCegarLoop]: Abstraction has 3382 states and 6472 transitions. [2019-11-24 04:48:49,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:48:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 6472 transitions. [2019-11-24 04:48:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-24 04:48:49,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:49,312 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] [2019-11-24 04:48:49,313 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:49,314 INFO L82 PathProgramCache]: Analyzing trace with hash 322896969, now seen corresponding path program 1 times [2019-11-24 04:48:49,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:49,325 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38113986] [2019-11-24 04:48:49,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:48:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:48:49,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38113986] [2019-11-24 04:48:49,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:48:49,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:48:49,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896161371] [2019-11-24 04:48:49,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:48:49,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:48:49,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:48:49,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:48:49,609 INFO L87 Difference]: Start difference. First operand 3382 states and 6472 transitions. Second operand 4 states. [2019-11-24 04:48:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:48:49,958 INFO L93 Difference]: Finished difference Result 7722 states and 14626 transitions. [2019-11-24 04:48:49,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 04:48:49,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-24 04:48:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:48:49,982 INFO L225 Difference]: With dead ends: 7722 [2019-11-24 04:48:49,982 INFO L226 Difference]: Without dead ends: 4692 [2019-11-24 04:48:49,988 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:48:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4692 states. [2019-11-24 04:48:50,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4692 to 3199. [2019-11-24 04:48:50,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3199 states. [2019-11-24 04:48:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 6055 transitions. [2019-11-24 04:48:50,140 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 6055 transitions. Word has length 30 [2019-11-24 04:48:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:48:50,140 INFO L462 AbstractCegarLoop]: Abstraction has 3199 states and 6055 transitions. [2019-11-24 04:48:50,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:48:50,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 6055 transitions. [2019-11-24 04:48:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-24 04:48:50,144 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:50,144 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] [2019-11-24 04:48:50,144 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:50,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1280435626, now seen corresponding path program 1 times [2019-11-24 04:48:50,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:50,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114715592] [2019-11-24 04:48:50,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:48:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:48:50,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114715592] [2019-11-24 04:48:50,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:48:50,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:48:50,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095891769] [2019-11-24 04:48:50,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:48:50,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:48:50,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:48:50,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:48:50,460 INFO L87 Difference]: Start difference. First operand 3199 states and 6055 transitions. Second operand 3 states. [2019-11-24 04:48:52,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:48:52,449 INFO L93 Difference]: Finished difference Result 8526 states and 16092 transitions. [2019-11-24 04:48:52,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:48:52,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2019-11-24 04:48:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:48:52,491 INFO L225 Difference]: With dead ends: 8526 [2019-11-24 04:48:52,491 INFO L226 Difference]: Without dead ends: 5533 [2019-11-24 04:48:52,499 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 04:48:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2019-11-24 04:48:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 3139. [2019-11-24 04:48:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3139 states. [2019-11-24 04:48:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5905 transitions. [2019-11-24 04:48:52,670 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5905 transitions. Word has length 31 [2019-11-24 04:48:52,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:48:52,671 INFO L462 AbstractCegarLoop]: Abstraction has 3139 states and 5905 transitions. [2019-11-24 04:48:52,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:48:52,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5905 transitions. [2019-11-24 04:48:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-24 04:48:52,674 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:48:52,674 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] [2019-11-24 04:48:52,674 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:48:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:48:52,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1807808998, now seen corresponding path program 1 times [2019-11-24 04:48:52,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:48:52,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851216887] [2019-11-24 04:48:52,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:48:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat