/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_spec5_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:36:21,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:36:21,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:36:21,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:36:21,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:36:21,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:36:21,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:36:21,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:36:21,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:36:21,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:36:21,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:36:21,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:36:21,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:36:21,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:36:21,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:36:21,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:36:21,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:36:21,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:36:21,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:36:21,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:36:21,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:36:21,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:36:21,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:36:21,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:36:21,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 05:36:21,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 05:36:21,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 05:36:21,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 05:36:21,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 05:36:21,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 05:36:21,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:36:21,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:36:21,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:36:21,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:36:21,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:36:21,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:36:21,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:36:21,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:36:21,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:36:21,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:36:21,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:36:21,454 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 05:36:21,469 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:36:21,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:36:21,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:36:21,470 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:36:21,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:36:21,470 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:36:21,471 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:36:21,471 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:36:21,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:36:21,471 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:36:21,471 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:36:21,472 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:36:21,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:36:21,472 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:36:21,472 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:36:21,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:36:21,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:36:21,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:36:21,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:36:21,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:36:21,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:36:21,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:36:21,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:36:21,475 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:36:21,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:36:21,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:36:21,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:36:21,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:36:21,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:36:21,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:36:21,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:36:21,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:36:21,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:36:21,477 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:36:21,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:36:21,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:36:21,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:36:21,477 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:36:21,762 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:36:21,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:36:21,781 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:36:21,783 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:36:21,783 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:36:21,784 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2019-11-24 05:36:21,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd260ed69/719ceeab3a26409e8336886c24a0d67b/FLAGa94781045 [2019-11-24 05:36:22,415 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:36:22,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2019-11-24 05:36:22,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd260ed69/719ceeab3a26409e8336886c24a0d67b/FLAGa94781045 [2019-11-24 05:36:22,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd260ed69/719ceeab3a26409e8336886c24a0d67b [2019-11-24 05:36:22,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:36:22,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:36:22,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:36:22,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:36:22,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:36:22,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6886fec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:22, skipping insertion in model container [2019-11-24 05:36:22,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:36:22" (1/1) ... [2019-11-24 05:36:22,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:36:22,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:36:23,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:36:23,284 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:36:23,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:36:23,404 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:36:23,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23 WrapperNode [2019-11-24 05:36:23,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:36:23,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:36:23,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:36:23,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:36:23,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:36:23,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:36:23,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:36:23,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:36:23,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (1/1) ... [2019-11-24 05:36:23,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:36:23,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:36:23,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:36:23,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:36:23,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (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 05:36:23,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:36:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:36:23,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:36:23,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:36:27,388 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:36:27,388 INFO L284 CfgBuilder]: Removed 294 assume(true) statements. [2019-11-24 05:36:27,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:36:27 BoogieIcfgContainer [2019-11-24 05:36:27,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:36:27,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:36:27,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:36:27,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:36:27,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:36:22" (1/3) ... [2019-11-24 05:36:27,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15419b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:36:27, skipping insertion in model container [2019-11-24 05:36:27,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:36:23" (2/3) ... [2019-11-24 05:36:27,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15419b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:36:27, skipping insertion in model container [2019-11-24 05:36:27,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:36:27" (3/3) ... [2019-11-24 05:36:27,399 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2019-11-24 05:36:27,410 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:36:27,419 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:36:27,433 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:36:27,457 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:36:27,457 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:36:27,457 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:36:27,457 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:36:27,458 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:36:27,458 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:36:27,458 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:36:27,458 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:36:27,474 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:36:27,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:36:27,480 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:27,481 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:27,482 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:27,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:27,488 INFO L82 PathProgramCache]: Analyzing trace with hash -211657476, now seen corresponding path program 1 times [2019-11-24 05:36:27,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:27,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993917128] [2019-11-24 05:36:27,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:27,740 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 05:36:27,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993917128] [2019-11-24 05:36:27,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:36:27,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:36:27,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311715993] [2019-11-24 05:36:27,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:36:27,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:36:27,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:36:27,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:36:27,760 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:36:27,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:36:27,780 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:36:27,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:36:27,781 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:36:27,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:36:27,791 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:36:27,791 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:36:27,795 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 05:36:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:36:27,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:36:27,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:36:27,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:36:27,832 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:36:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:36:27,833 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:36:27,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:36:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:36:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:36:27,834 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:27,834 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:27,834 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1301072723, now seen corresponding path program 1 times [2019-11-24 05:36:27,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:27,835 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991467558] [2019-11-24 05:36:27,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:28,290 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 05:36:28,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991467558] [2019-11-24 05:36:28,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:36:28,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:36:28,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521152025] [2019-11-24 05:36:28,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:36:28,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:36:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:36:28,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:36:28,294 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2019-11-24 05:36:28,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:36:28,518 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2019-11-24 05:36:28,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:36:28,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:36:28,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:36:28,521 INFO L225 Difference]: With dead ends: 80 [2019-11-24 05:36:28,521 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:36:28,524 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:36:28,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:36:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:36:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:36:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:36:28,535 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:36:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:36:28,536 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:36:28,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:36:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:36:28,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:36:28,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:36:28,538 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:36:28,538 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:36:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:36:28,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1321403823, now seen corresponding path program 1 times [2019-11-24 05:36:28,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:36:28,541 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335478646] [2019-11-24 05:36:28,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:36:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:28,923 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 05:36:28,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335478646] [2019-11-24 05:36:28,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083197018] [2019-11-24 05:36:28,924 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 05:36:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:36:29,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:36:29,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:36:29,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:36:29,214 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:36:29,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,252 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:36:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:36:29,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [957167249] [2019-11-24 05:36:29,326 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:36:29,327 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:36:29,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:36:29,340 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:36:29,341 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:36:40,083 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:36:41,779 WARN L192 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:36:41,913 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:36:42,513 WARN L192 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 688 DAG size of output: 594 [2019-11-24 05:36:44,041 WARN L192 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 694 [2019-11-24 05:36:46,037 WARN L192 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 933 DAG size of output: 842 [2019-11-24 05:36:54,997 WARN L192 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 834 DAG size of output: 830 [2019-11-24 05:37:16,974 WARN L192 SmtUtils]: Spent 12.27 s on a formula simplification. DAG size of input: 2196 DAG size of output: 1291 [2019-11-24 05:37:43,073 WARN L192 SmtUtils]: Spent 8.84 s on a formula simplification. DAG size of input: 1201 DAG size of output: 1148