/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_spec1_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:18:05,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:18:05,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:18:05,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:18:05,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:18:05,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:18:05,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:18:05,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:18:05,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:18:05,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:18:05,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:18:05,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:18:05,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:18:05,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:18:05,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:18:05,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:18:05,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:18:05,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:18:05,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:18:05,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:18:05,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:18:05,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:18:05,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:18:05,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:18:05,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:18:05,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:18:05,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:18:05,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:18:05,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:18:05,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:18:05,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:18:05,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:18:05,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:18:05,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:18:05,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:18:05,219 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:18:05,219 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 05:18:05,247 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:18:05,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:18:05,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:18:05,249 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:18:05,249 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:18:05,249 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:18:05,249 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:18:05,249 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:18:05,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:18:05,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:18:05,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:18:05,250 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:18:05,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:18:05,251 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:18:05,251 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:18:05,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:18:05,252 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:18:05,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:18:05,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:18:05,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:18:05,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:18:05,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:18:05,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:18:05,253 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:18:05,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:18:05,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:18:05,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:18:05,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:18:05,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:18:05,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:18:05,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:18:05,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:18:05,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:18:05,255 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:18:05,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:18:05,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:18:05,256 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:18:05,256 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:18:05,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:18:05,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:18:05,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:18:05,555 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:18:05,555 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:18:05,556 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2019-11-24 05:18:05,637 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f3abca0/b03f977191a742f1a82501eb432b3f9b/FLAG7fbb7bd1e [2019-11-24 05:18:06,240 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:18:06,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product46.cil.c [2019-11-24 05:18:06,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f3abca0/b03f977191a742f1a82501eb432b3f9b/FLAG7fbb7bd1e [2019-11-24 05:18:06,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18f3abca0/b03f977191a742f1a82501eb432b3f9b [2019-11-24 05:18:06,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:18:06,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:18:06,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:18:06,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:18:06,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:18:06,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:18:06" (1/1) ... [2019-11-24 05:18:06,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e49450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:06, skipping insertion in model container [2019-11-24 05:18:06,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:18:06" (1/1) ... [2019-11-24 05:18:06,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:18:06,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:18:07,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:18:07,106 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:18:07,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:18:07,263 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:18:07,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07 WrapperNode [2019-11-24 05:18:07,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:18:07,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:18:07,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:18:07,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:18:07,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:18:07,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:18:07,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:18:07,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:18:07,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (1/1) ... [2019-11-24 05:18:07,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:18:07,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:18:07,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:18:07,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:18:07,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (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 05:18:07,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:18:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:18:07,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:18:07,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:18:09,911 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:18:09,912 INFO L284 CfgBuilder]: Removed 194 assume(true) statements. [2019-11-24 05:18:09,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:18:09 BoogieIcfgContainer [2019-11-24 05:18:09,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:18:09,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:18:09,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:18:09,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:18:09,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:18:06" (1/3) ... [2019-11-24 05:18:09,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1723768c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:18:09, skipping insertion in model container [2019-11-24 05:18:09,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:18:07" (2/3) ... [2019-11-24 05:18:09,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1723768c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:18:09, skipping insertion in model container [2019-11-24 05:18:09,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:18:09" (3/3) ... [2019-11-24 05:18:09,925 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product46.cil.c [2019-11-24 05:18:09,935 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:18:09,943 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:18:09,954 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:18:09,981 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:18:09,981 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:18:09,981 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:18:09,982 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:18:09,982 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:18:09,982 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:18:09,982 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:18:09,983 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:18:10,000 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:18:10,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:18:10,007 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:10,008 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:10,009 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:10,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:10,015 INFO L82 PathProgramCache]: Analyzing trace with hash -580154404, now seen corresponding path program 1 times [2019-11-24 05:18:10,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:10,029 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983714061] [2019-11-24 05:18:10,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:10,405 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 05:18:10,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983714061] [2019-11-24 05:18:10,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:18:10,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:18:10,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302946680] [2019-11-24 05:18:10,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:18:10,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:18:10,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:18:10,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:18:10,431 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-24 05:18:10,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:18:10,453 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-24 05:18:10,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:18:10,454 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-24 05:18:10,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:18:10,462 INFO L225 Difference]: With dead ends: 44 [2019-11-24 05:18:10,463 INFO L226 Difference]: Without dead ends: 21 [2019-11-24 05:18:10,466 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 05:18:10,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-24 05:18:10,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-24 05:18:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-24 05:18:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-24 05:18:10,501 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2019-11-24 05:18:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:18:10,501 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-24 05:18:10,502 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:18:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-24 05:18:10,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:18:10,502 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:10,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:10,503 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:10,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:10,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1124974129, now seen corresponding path program 1 times [2019-11-24 05:18:10,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:10,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865085483] [2019-11-24 05:18:10,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:10,824 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 05:18:10,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865085483] [2019-11-24 05:18:10,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:18:10,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:18:10,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231416592] [2019-11-24 05:18:10,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:18:10,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:18:10,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:18:10,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:18:10,828 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2019-11-24 05:18:10,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:18:10,991 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-11-24 05:18:10,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:18:10,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 05:18:10,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:18:10,993 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:18:10,993 INFO L226 Difference]: Without dead ends: 44 [2019-11-24 05:18:10,994 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 05:18:10,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-24 05:18:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2019-11-24 05:18:11,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-24 05:18:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-11-24 05:18:11,003 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2019-11-24 05:18:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:18:11,003 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-24 05:18:11,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:18:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-11-24 05:18:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:18:11,004 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:18:11,004 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:18:11,005 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:18:11,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:18:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1921373051, now seen corresponding path program 1 times [2019-11-24 05:18:11,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:18:11,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547108916] [2019-11-24 05:18:11,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:18:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:11,317 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 05:18:11,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547108916] [2019-11-24 05:18:11,318 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914038245] [2019-11-24 05:18:11,318 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 05:18:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:18:11,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 37 conjunts are in the unsatisfiable core [2019-11-24 05:18:11,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:18:11,826 WARN L192 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2019-11-24 05:18:12,011 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-11-24 05:18:12,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,216 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 05:18:12,216 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:18:12,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,277 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,297 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,306 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,309 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,355 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:18:12,493 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 05:18:12,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1525354531] [2019-11-24 05:18:12,522 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:18:12,522 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:18:12,528 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:18:12,535 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:18:12,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:18:22,535 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:18:24,189 WARN L192 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:18:24,328 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:18:24,945 WARN L192 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 594 DAG size of output: 594 [2019-11-24 05:18:25,784 WARN L192 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 695 [2019-11-24 05:18:30,974 WARN L192 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 953 DAG size of output: 908 [2019-11-24 05:18:36,637 WARN L192 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 906 DAG size of output: 901 [2019-11-24 05:19:09,274 WARN L192 SmtUtils]: Spent 28.46 s on a formula simplification. DAG size of input: 2226 DAG size of output: 1756