/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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:19:43,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:19:43,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:19:43,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:19:43,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:19:43,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:19:43,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:19:43,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:19:43,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:19:43,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:19:43,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:19:43,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:19:43,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:19:43,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:19:43,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:19:43,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:19:43,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:19:43,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:19:43,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:19:43,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:19:43,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:19:43,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:19:43,202 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:19:43,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:19:43,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:19:43,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:19:43,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:19:43,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:19:43,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:19:43,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:19:43,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:19:43,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:19:43,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:19:43,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:19:43,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:19:43,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:19:43,214 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 05:19:43,228 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:19:43,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:19:43,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:19:43,230 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:19:43,230 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:19:43,230 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:19:43,230 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:19:43,231 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:19:43,231 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:19:43,231 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:19:43,231 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:19:43,231 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:19:43,232 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:19:43,232 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:19:43,232 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:19:43,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:19:43,233 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:19:43,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:19:43,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:19:43,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:19:43,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:19:43,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:19:43,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:19:43,234 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:19:43,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:19:43,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:19:43,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:19:43,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:19:43,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:19:43,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:19:43,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:19:43,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:19:43,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:19:43,236 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:19:43,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:19:43,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:19:43,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:19:43,237 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:19:43,499 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:19:43,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:19:43,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:19:43,522 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:19:43,523 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:19:43,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product63.cil.c [2019-11-24 05:19:43,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3e67a55/60ed6f7d494340dc8d7440265215094a/FLAGf3fc22c3f [2019-11-24 05:19:44,135 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:19:44,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product63.cil.c [2019-11-24 05:19:44,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3e67a55/60ed6f7d494340dc8d7440265215094a/FLAGf3fc22c3f [2019-11-24 05:19:44,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b3e67a55/60ed6f7d494340dc8d7440265215094a [2019-11-24 05:19:44,460 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:19:44,462 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:19:44,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:19:44,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:19:44,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:19:44,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:19:44" (1/1) ... [2019-11-24 05:19:44,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac184fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:44, skipping insertion in model container [2019-11-24 05:19:44,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:19:44" (1/1) ... [2019-11-24 05:19:44,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:19:44,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:19:45,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:19:45,039 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:19:45,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:19:45,172 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:19:45,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45 WrapperNode [2019-11-24 05:19:45,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:19:45,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:19:45,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:19:45,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:19:45,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:19:45,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:19:45,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:19:45,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:19:45,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (1/1) ... [2019-11-24 05:19:45,405 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:19:45,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:19:45,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:19:45,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:19:45,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (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 05:19:45,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:19:45,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:19:45,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:19:45,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:19:49,657 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:19:49,657 INFO L284 CfgBuilder]: Removed 352 assume(true) statements. [2019-11-24 05:19:49,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:19:49 BoogieIcfgContainer [2019-11-24 05:19:49,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:19:49,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:19:49,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:19:49,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:19:49,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:19:44" (1/3) ... [2019-11-24 05:19:49,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625f843c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:19:49, skipping insertion in model container [2019-11-24 05:19:49,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:19:45" (2/3) ... [2019-11-24 05:19:49,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@625f843c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:19:49, skipping insertion in model container [2019-11-24 05:19:49,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:19:49" (3/3) ... [2019-11-24 05:19:49,667 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product63.cil.c [2019-11-24 05:19:49,677 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:19:49,684 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:19:49,694 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:19:49,714 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:19:49,714 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:19:49,714 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:19:49,714 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:19:49,714 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:19:49,715 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:19:49,715 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:19:49,715 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:19:49,730 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-24 05:19:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 05:19:49,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:19:49,739 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:19:49,740 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:19:49,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:19:49,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1218293990, now seen corresponding path program 1 times [2019-11-24 05:19:49,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:19:49,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592826857] [2019-11-24 05:19:49,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:19:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:50,319 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 05:19:50,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592826857] [2019-11-24 05:19:50,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:19:50,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:19:50,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877488000] [2019-11-24 05:19:50,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:19:50,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:19:50,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:19:50,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:19:50,345 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-24 05:19:50,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:19:50,681 INFO L93 Difference]: Finished difference Result 73 states and 105 transitions. [2019-11-24 05:19:50,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:19:50,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 05:19:50,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:19:50,696 INFO L225 Difference]: With dead ends: 73 [2019-11-24 05:19:50,697 INFO L226 Difference]: Without dead ends: 44 [2019-11-24 05:19:50,701 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 05:19:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-24 05:19:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2019-11-24 05:19:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-24 05:19:50,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-11-24 05:19:50,741 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2019-11-24 05:19:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:19:50,742 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-24 05:19:50,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:19:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-11-24 05:19:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-24 05:19:50,744 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:19:50,744 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:19:50,745 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:19:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:19:50,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1041893670, now seen corresponding path program 1 times [2019-11-24 05:19:50,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:19:50,746 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106036328] [2019-11-24 05:19:50,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:19:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:51,174 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 05:19:51,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106036328] [2019-11-24 05:19:51,177 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012724009] [2019-11-24 05:19:51,177 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 05:19:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:19:51,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-24 05:19:51,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:19:51,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,476 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,482 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,485 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:51,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,039 WARN L192 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 72 [2019-11-24 05:19:52,310 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-11-24 05:19:52,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,512 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 05:19:52,512 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:19:52,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,555 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,562 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,563 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,566 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:19:52,676 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 05:19:52,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1833833728] [2019-11-24 05:19:52,719 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 05:19:52,720 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:19:52,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:19:52,731 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:19:52,731 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:20:00,780 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:20:02,695 WARN L192 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:20:02,818 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:20:03,460 WARN L192 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 599 [2019-11-24 05:20:04,823 WARN L192 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 699 [2019-11-24 05:20:10,594 WARN L192 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 1019 DAG size of output: 912 [2019-11-24 05:20:15,273 WARN L192 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 892 DAG size of output: 884 [2019-11-24 05:21:11,761 WARN L192 SmtUtils]: Spent 45.89 s on a formula simplification. DAG size of input: 4143 DAG size of output: 2478