/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/minepump_spec3_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:26:03,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:26:03,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:26:03,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:26:03,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:26:03,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:26:03,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:26:03,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:26:03,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:26:03,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:26:03,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:26:03,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:26:03,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:26:03,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:26:03,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:26:03,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:26:03,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:26:03,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:26:03,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:26:03,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:26:03,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:26:03,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:26:03,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:26:03,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:26:03,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:26:03,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:26:03,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:26:03,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:26:03,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:26:03,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:26:03,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:26:03,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:26:03,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:26:03,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:26:03,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:26:03,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:26:03,176 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 05:26:03,192 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:26:03,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:26:03,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:26:03,193 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:26:03,193 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:26:03,193 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:26:03,194 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:26:03,194 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:26:03,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:26:03,194 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:26:03,194 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:26:03,194 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:26:03,195 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:26:03,195 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:26:03,195 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:26:03,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:26:03,196 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:26:03,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:26:03,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:26:03,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:26:03,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:26:03,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:26:03,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:26:03,197 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:26:03,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:26:03,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:26:03,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:26:03,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:26:03,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:26:03,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:26:03,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:26:03,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:26:03,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:26:03,199 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:26:03,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:26:03,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:26:03,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:26:03,200 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:26:03,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:26:03,468 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:26:03,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:26:03,475 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:26:03,475 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:26:03,476 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c [2019-11-24 05:26:03,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06829eb1e/9addbf36f47247c9848b070c3cecc4af/FLAGdfa356932 [2019-11-24 05:26:04,157 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:26:04,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c [2019-11-24 05:26:04,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06829eb1e/9addbf36f47247c9848b070c3cecc4af/FLAGdfa356932 [2019-11-24 05:26:04,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06829eb1e/9addbf36f47247c9848b070c3cecc4af [2019-11-24 05:26:04,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:26:04,398 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:26:04,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:26:04,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:26:04,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:26:04,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:26:04" (1/1) ... [2019-11-24 05:26:04,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164a32c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:04, skipping insertion in model container [2019-11-24 05:26:04,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:26:04" (1/1) ... [2019-11-24 05:26:04,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:26:04,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:26:04,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:26:04,957 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:26:05,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:26:05,075 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:26:05,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05 WrapperNode [2019-11-24 05:26:05,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:26:05,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:26:05,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:26:05,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:26:05,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,104 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:26:05,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:26:05,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:26:05,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:26:05,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (1/1) ... [2019-11-24 05:26:05,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:26:05,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:26:05,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:26:05,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:26:05,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (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 05:26:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:26:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:26:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:26:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:26:07,756 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:26:07,757 INFO L284 CfgBuilder]: Removed 198 assume(true) statements. [2019-11-24 05:26:07,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:07 BoogieIcfgContainer [2019-11-24 05:26:07,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:26:07,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:26:07,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:26:07,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:26:07,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:26:04" (1/3) ... [2019-11-24 05:26:07,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a0384d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:07, skipping insertion in model container [2019-11-24 05:26:07,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:26:05" (2/3) ... [2019-11-24 05:26:07,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a0384d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:07, skipping insertion in model container [2019-11-24 05:26:07,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:07" (3/3) ... [2019-11-24 05:26:07,772 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product45.cil.c [2019-11-24 05:26:07,782 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:26:07,790 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:26:07,802 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:26:07,837 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:26:07,838 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:26:07,838 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:26:07,838 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:26:07,838 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:26:07,839 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:26:07,839 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:26:07,839 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:26:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:26:07,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:26:07,871 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:07,872 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:07,873 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:07,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1702564986, now seen corresponding path program 1 times [2019-11-24 05:26:07,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:07,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610414461] [2019-11-24 05:26:07,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:08,202 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 05:26:08,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610414461] [2019-11-24 05:26:08,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:26:08,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:26:08,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870322848] [2019-11-24 05:26:08,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:26:08,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:26:08,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:26:08,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:26:08,221 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:26:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:26:08,243 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:26:08,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:26:08,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:26:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:26:08,255 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:26:08,255 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:26:08,259 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 05:26:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:26:08,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:26:08,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:26:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:26:08,298 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:26:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:26:08,298 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:26:08,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:26:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:26:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:26:08,299 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:08,299 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:08,300 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:08,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1527240371, now seen corresponding path program 1 times [2019-11-24 05:26:08,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:08,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557154122] [2019-11-24 05:26:08,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:08,608 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 05:26:08,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557154122] [2019-11-24 05:26:08,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:26:08,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:26:08,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372719895] [2019-11-24 05:26:08,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:26:08,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:26:08,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:26:08,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:26:08,613 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 6 states. [2019-11-24 05:26:08,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:26:08,984 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2019-11-24 05:26:08,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:26:08,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:26:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:26:08,987 INFO L225 Difference]: With dead ends: 55 [2019-11-24 05:26:08,987 INFO L226 Difference]: Without dead ends: 51 [2019-11-24 05:26:08,989 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:26:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-24 05:26:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2019-11-24 05:26:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 05:26:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2019-11-24 05:26:09,003 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 8 [2019-11-24 05:26:09,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:26:09,004 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2019-11-24 05:26:09,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:26:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2019-11-24 05:26:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:26:09,005 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:09,005 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:09,006 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:09,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:09,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1508312626, now seen corresponding path program 1 times [2019-11-24 05:26:09,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:09,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726912140] [2019-11-24 05:26:09,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:09,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:26:09,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726912140] [2019-11-24 05:26:09,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912622868] [2019-11-24 05:26:09,278 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 05:26:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:09,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 05:26:09,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:26:09,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:09,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:09,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:09,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:09,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:09,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:09,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:26:09,623 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:26:09,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:26:09,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1308195671] [2019-11-24 05:26:09,769 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:26:09,769 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:26:09,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:26:09,781 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:26:09,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:26:18,298 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:26:19,986 WARN L192 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:26:20,158 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:26:20,712 WARN L192 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 594 DAG size of output: 594 [2019-11-24 05:26:21,754 WARN L192 SmtUtils]: Spent 689.00 ms on a formula simplification that was a NOOP. DAG size: 695 [2019-11-24 05:26:23,636 WARN L192 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 835 DAG size of output: 772 [2019-11-24 05:26:27,315 WARN L192 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 770 DAG size of output: 767 [2019-11-24 05:26:50,364 WARN L192 SmtUtils]: Spent 14.31 s on a formula simplification. DAG size of input: 1812 DAG size of output: 1232 [2019-11-24 05:27:04,031 WARN L192 SmtUtils]: Spent 13.65 s on a formula simplification. DAG size of input: 1812 DAG size of output: 1232 [2019-11-24 05:27:16,367 WARN L192 SmtUtils]: Spent 12.32 s on a formula simplification. DAG size of input: 1180 DAG size of output: 1146 [2019-11-24 05:27:16,378 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:27:20,999 WARN L192 SmtUtils]: Spent 4.48 s on a formula simplification. DAG size of input: 484 DAG size of output: 429