/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/email_spec27_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:57:41,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:57:41,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:57:41,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:57:41,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:57:41,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:57:41,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:57:41,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:57:41,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:57:41,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:57:41,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:57:41,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:57:41,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:57:41,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:57:41,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:57:41,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:57:41,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:57:41,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:57:41,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:57:41,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:57:41,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:57:41,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:57:41,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:57:41,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:57:41,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:57:41,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:57:41,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:57:41,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:57:41,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:57:41,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:57:41,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:57:41,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:57:41,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:57:41,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:57:41,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:57:41,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:57:41,349 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 04:57:41,381 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:57:41,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:57:41,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:57:41,385 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:57:41,386 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:57:41,386 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:57:41,386 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:57:41,386 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:57:41,386 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:57:41,387 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:57:41,387 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:57:41,387 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:57:41,387 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:57:41,387 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:57:41,388 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:57:41,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:57:41,389 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:57:41,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:57:41,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:57:41,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:57:41,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:57:41,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:57:41,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:57:41,391 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:57:41,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:57:41,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:57:41,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:57:41,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:57:41,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:57:41,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:57:41,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:57:41,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:57:41,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:57:41,393 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:57:41,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:57:41,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:57:41,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:57:41,394 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:57:41,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:57:41,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:57:41,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:57:41,692 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:57:41,693 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:57:41,694 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c [2019-11-24 04:57:41,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b16e75e/c137d50e52114c8a98af22e2e7853cda/FLAG31c2864f1 [2019-11-24 04:57:42,417 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:57:42,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product29.cil.c [2019-11-24 04:57:42,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b16e75e/c137d50e52114c8a98af22e2e7853cda/FLAG31c2864f1 [2019-11-24 04:57:42,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91b16e75e/c137d50e52114c8a98af22e2e7853cda [2019-11-24 04:57:42,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:57:42,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:57:42,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:57:42,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:57:42,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:57:42,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:57:42" (1/1) ... [2019-11-24 04:57:42,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d9ee48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:42, skipping insertion in model container [2019-11-24 04:57:42,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:57:42" (1/1) ... [2019-11-24 04:57:42,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:57:42,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:57:43,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:57:43,516 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:57:43,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:57:43,722 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:57:43,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43 WrapperNode [2019-11-24 04:57:43,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:57:43,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:57:43,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:57:43,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:57:43,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:43,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:43,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:57:43,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:57:43,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:57:43,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:57:43,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:43,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:43,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:43,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:44,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:44,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:44,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (1/1) ... [2019-11-24 04:57:44,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:57:44,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:57:44,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:57:44,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:57:44,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (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 04:57:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:57:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:57:44,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:57:44,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:57:44,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:57:59,242 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:57:59,242 INFO L284 CfgBuilder]: Removed 617 assume(true) statements. [2019-11-24 04:57:59,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:57:59 BoogieIcfgContainer [2019-11-24 04:57:59,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:57:59,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:57:59,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:57:59,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:57:59,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:57:42" (1/3) ... [2019-11-24 04:57:59,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428cc510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:57:59, skipping insertion in model container [2019-11-24 04:57:59,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:57:43" (2/3) ... [2019-11-24 04:57:59,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428cc510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:57:59, skipping insertion in model container [2019-11-24 04:57:59,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:57:59" (3/3) ... [2019-11-24 04:57:59,253 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product29.cil.c [2019-11-24 04:57:59,263 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:57:59,271 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 04:57:59,283 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 04:57:59,309 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:57:59,310 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:57:59,310 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:57:59,310 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:57:59,310 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:57:59,310 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:57:59,311 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:57:59,311 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:57:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 04:57:59,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:57:59,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:57:59,337 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:57:59,338 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:57:59,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:57:59,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1538164822, now seen corresponding path program 1 times [2019-11-24 04:57:59,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:57:59,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052399679] [2019-11-24 04:57:59,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:57:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:57:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:57:59,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052399679] [2019-11-24 04:57:59,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:57:59,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:57:59,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585951342] [2019-11-24 04:57:59,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:57:59,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:57:59,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:57:59,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:57:59,893 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 04:57:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:57:59,931 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 04:57:59,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:57:59,933 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:57:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:57:59,950 INFO L225 Difference]: With dead ends: 100 [2019-11-24 04:57:59,950 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 04:57:59,955 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 04:57:59,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 04:57:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 04:58:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 04:58:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 04:58:00,006 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 04:58:00,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:00,007 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 04:58:00,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:58:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 04:58:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:58:00,009 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:00,010 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:00,010 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:58:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:00,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1409133273, now seen corresponding path program 1 times [2019-11-24 04:58:00,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:00,012 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353278802] [2019-11-24 04:58:00,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:00,183 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 04:58:00,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353278802] [2019-11-24 04:58:00,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:00,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:58:00,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848916186] [2019-11-24 04:58:00,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:58:00,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:00,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:58:00,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:58:00,187 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 04:58:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:00,214 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 04:58:00,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:58:00,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:58:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:00,218 INFO L225 Difference]: With dead ends: 94 [2019-11-24 04:58:00,218 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 04:58:00,220 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 04:58:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 04:58:00,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 04:58:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:58:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 04:58:00,242 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 04:58:00,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:00,245 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 04:58:00,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:58:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 04:58:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:58:00,246 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:00,246 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:00,247 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:58:00,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:00,247 INFO L82 PathProgramCache]: Analyzing trace with hash 764089700, now seen corresponding path program 1 times [2019-11-24 04:58:00,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:00,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282148569] [2019-11-24 04:58:00,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:58:00,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282148569] [2019-11-24 04:58:00,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:58:00,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:58:00,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336156598] [2019-11-24 04:58:00,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:58:00,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:58:00,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:58:00,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:58:00,480 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 5 states. [2019-11-24 04:58:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:58:00,819 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-11-24 04:58:00,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:58:00,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 04:58:00,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:58:00,822 INFO L225 Difference]: With dead ends: 136 [2019-11-24 04:58:00,823 INFO L226 Difference]: Without dead ends: 110 [2019-11-24 04:58:00,823 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:58:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-24 04:58:00,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2019-11-24 04:58:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-24 04:58:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2019-11-24 04:58:00,835 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 13 [2019-11-24 04:58:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:58:00,835 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2019-11-24 04:58:00,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:58:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2019-11-24 04:58:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:58:00,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:58:00,837 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:58:00,837 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:58:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:58:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash 764928298, now seen corresponding path program 1 times [2019-11-24 04:58:00,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:58:00,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199409722] [2019-11-24 04:58:00,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:58:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:58:01,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199409722] [2019-11-24 04:58:01,136 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519717240] [2019-11-24 04:58:01,136 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 04:58:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:58:01,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:58:01,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:58:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:58:01,641 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:58:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:58:01,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [675955730] [2019-11-24 04:58:01,706 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 04:58:01,707 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:58:01,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:58:01,721 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:58:01,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:58:56,350 WARN L192 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 698 [2019-11-24 04:59:00,605 WARN L192 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 329 DAG size of output: 267 [2019-11-24 04:59:01,106 WARN L192 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 745 [2019-11-24 04:59:01,487 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8