/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:25:47,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:25:47,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:25:47,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:25:47,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:25:47,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:25:47,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:25:47,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:25:47,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:25:47,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:25:47,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:25:47,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:25:47,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:25:47,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:25:47,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:25:47,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:25:47,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:25:47,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:25:47,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:25:47,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:25:47,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:25:47,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:25:47,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:25:47,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:25:47,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:25:47,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 05:25:47,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 05:25:47,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 05:25:47,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 05:25:47,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 05:25:47,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 05:25:47,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 05:25:47,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 05:25:47,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:25:47,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:25:47,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:25:47,527 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 05:25:47,548 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:25:47,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:25:47,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:25:47,552 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:25:47,552 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:25:47,553 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:25:47,553 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:25:47,553 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:25:47,553 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:25:47,553 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:25:47,554 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:25:47,554 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:25:47,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:25:47,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:25:47,554 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:25:47,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:25:47,555 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:25:47,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:25:47,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:25:47,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:25:47,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:25:47,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:25:47,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:25:47,559 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:25:47,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:25:47,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:25:47,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:25:47,559 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:25:47,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:25:47,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:25:47,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:25:47,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:25:47,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:25:47,561 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:25:47,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:25:47,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:25:47,562 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:25:47,562 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:25:47,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:25:47,840 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:25:47,844 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:25:47,845 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:25:47,845 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:25:47,846 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product34.cil.c [2019-11-24 05:25:47,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c97b538/385b06b30121478e955111f316557585/FLAGdf393e9af [2019-11-24 05:25:48,429 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:25:48,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product34.cil.c [2019-11-24 05:25:48,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c97b538/385b06b30121478e955111f316557585/FLAGdf393e9af [2019-11-24 05:25:48,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79c97b538/385b06b30121478e955111f316557585 [2019-11-24 05:25:48,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:25:48,792 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:25:48,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:48,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:25:48,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:25:48,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:48" (1/1) ... [2019-11-24 05:25:48,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f393570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:48, skipping insertion in model container [2019-11-24 05:25:48,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:48" (1/1) ... [2019-11-24 05:25:48,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:25:48,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:25:49,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:49,283 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:25:49,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:49,405 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:25:49,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49 WrapperNode [2019-11-24 05:25:49,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:49,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:49,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:25:49,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:25:49,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:49,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:25:49,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:25:49,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:25:49,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (1/1) ... [2019-11-24 05:25:49,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:25:49,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:25:49,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:25:49,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:25:49,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (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 05:25:49,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:25:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:25:49,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:25:49,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:25:51,008 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:25:51,008 INFO L284 CfgBuilder]: Removed 104 assume(true) statements. [2019-11-24 05:25:51,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:25:51 BoogieIcfgContainer [2019-11-24 05:25:51,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:25:51,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:25:51,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:25:51,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:25:51,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:25:48" (1/3) ... [2019-11-24 05:25:51,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@828d669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:25:51, skipping insertion in model container [2019-11-24 05:25:51,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:49" (2/3) ... [2019-11-24 05:25:51,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@828d669 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:25:51, skipping insertion in model container [2019-11-24 05:25:51,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:25:51" (3/3) ... [2019-11-24 05:25:51,019 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product34.cil.c [2019-11-24 05:25:51,028 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:25:51,033 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:25:51,042 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:25:51,060 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:25:51,060 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:25:51,060 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:25:51,060 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:25:51,060 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:25:51,060 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:25:51,061 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:25:51,061 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:25:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:25:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:25:51,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:51,080 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:51,081 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:51,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:51,087 INFO L82 PathProgramCache]: Analyzing trace with hash -256018791, now seen corresponding path program 1 times [2019-11-24 05:25:51,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:51,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918014966] [2019-11-24 05:25:51,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:51,516 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 05:25:51,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918014966] [2019-11-24 05:25:51,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:25:51,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:25:51,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712275979] [2019-11-24 05:25:51,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:25:51,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:25:51,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:25:51,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:25:51,541 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-11-24 05:25:51,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:25:51,893 INFO L93 Difference]: Finished difference Result 114 states and 168 transitions. [2019-11-24 05:25:51,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:25:51,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:25:51,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:25:51,910 INFO L225 Difference]: With dead ends: 114 [2019-11-24 05:25:51,910 INFO L226 Difference]: Without dead ends: 42 [2019-11-24 05:25:51,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-24 05:25:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-24 05:25:51,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2019-11-24 05:25:51,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-24 05:25:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2019-11-24 05:25:51,963 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 8 [2019-11-24 05:25:51,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:25:51,964 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2019-11-24 05:25:51,964 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:25:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2019-11-24 05:25:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:25:51,965 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:25:51,965 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:25:51,965 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:25:51,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:25:51,966 INFO L82 PathProgramCache]: Analyzing trace with hash 621158844, now seen corresponding path program 1 times [2019-11-24 05:25:51,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:25:51,967 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414211279] [2019-11-24 05:25:51,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:25:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:52,274 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 05:25:52,274 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414211279] [2019-11-24 05:25:52,275 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263715689] [2019-11-24 05:25:52,275 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 05:25:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:25:52,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-24 05:25:52,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:25:52,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:52,528 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:52,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:52,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:52,602 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 05:25:52,602 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:25:52,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:52,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:25:52,707 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 05:25:52,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [439281282] [2019-11-24 05:25:52,733 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:25:52,733 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:25:52,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:25:52,746 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:25:52,747 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:26:02,599 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:26:04,366 WARN L192 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:26:04,508 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:26:05,052 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 578 [2019-11-24 05:26:05,835 WARN L192 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 678 [2019-11-24 05:26:08,703 WARN L192 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 785 DAG size of output: 773 [2019-11-24 05:26:12,860 WARN L192 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 773 DAG size of output: 772 [2019-11-24 05:26:39,766 WARN L192 SmtUtils]: Spent 22.00 s on a formula simplification. DAG size of input: 1646 DAG size of output: 1426 [2019-11-24 05:27:12,234 WARN L192 SmtUtils]: Spent 22.69 s on a formula simplification. DAG size of input: 1377 DAG size of output: 1359