/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_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:27:16,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:27:16,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:27:16,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:27:16,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:27:16,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:27:16,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:27:16,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:27:16,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:27:16,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:27:16,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:27:16,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:27:16,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:27:16,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:27:16,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:27:16,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:27:16,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:27:16,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:27:16,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:27:16,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:27:16,188 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 05:27:16,223 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:27:16,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:27:16,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:27:16,225 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:27:16,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:27:16,225 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:27:16,225 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:27:16,225 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:27:16,225 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:27:16,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:27:16,228 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:27:16,228 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:27:16,229 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:27:16,229 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:27:16,229 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:27:16,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:27:16,230 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:27:16,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:27:16,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:27:16,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:27:16,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:27:16,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:27:16,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:27:16,232 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:27:16,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:27:16,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:27:16,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:27:16,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:27:16,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:27:16,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:27:16,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:27:16,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:27:16,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:27:16,235 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:27:16,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:27:16,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:27:16,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:27:16,236 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:27:16,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:27:16,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:27:16,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:27:16,532 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:27:16,532 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:27:16,535 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product49.cil.c [2019-11-24 05:27:16,607 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b295c839b/1ffff9b6f03741909dbc1b498609ac96/FLAG14c4fd6f0 [2019-11-24 05:27:17,144 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:27:17,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product49.cil.c [2019-11-24 05:27:17,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b295c839b/1ffff9b6f03741909dbc1b498609ac96/FLAG14c4fd6f0 [2019-11-24 05:27:17,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b295c839b/1ffff9b6f03741909dbc1b498609ac96 [2019-11-24 05:27:17,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:27:17,453 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:27:17,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:27:17,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:27:17,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:27:17,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:27:17" (1/1) ... [2019-11-24 05:27:17,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@720b1c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:17, skipping insertion in model container [2019-11-24 05:27:17,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:27:17" (1/1) ... [2019-11-24 05:27:17,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:27:17,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:27:17,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:27:17,958 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:27:18,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:27:18,100 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:27:18,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18 WrapperNode [2019-11-24 05:27:18,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:27:18,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:27:18,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:27:18,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:27:18,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:27:18,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:27:18,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:27:18,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:27:18,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (1/1) ... [2019-11-24 05:27:18,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:27:18,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:27:18,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:27:18,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:27:18,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (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 05:27:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:27:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:27:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:27:18,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:27:20,365 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:27:20,366 INFO L284 CfgBuilder]: Removed 162 assume(true) statements. [2019-11-24 05:27:20,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:27:20 BoogieIcfgContainer [2019-11-24 05:27:20,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:27:20,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:27:20,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:27:20,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:27:20,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:27:17" (1/3) ... [2019-11-24 05:27:20,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4014efed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:27:20, skipping insertion in model container [2019-11-24 05:27:20,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:27:18" (2/3) ... [2019-11-24 05:27:20,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4014efed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:27:20, skipping insertion in model container [2019-11-24 05:27:20,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:27:20" (3/3) ... [2019-11-24 05:27:20,375 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product49.cil.c [2019-11-24 05:27:20,385 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:27:20,393 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:27:20,404 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:27:20,428 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:27:20,428 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:27:20,428 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:27:20,429 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:27:20,429 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:27:20,429 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:27:20,429 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:27:20,429 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:27:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:27:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:27:20,451 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:27:20,452 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:27:20,453 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:27:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:27:20,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1596910146, now seen corresponding path program 1 times [2019-11-24 05:27:20,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:27:20,469 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082587270] [2019-11-24 05:27:20,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:27:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:27:20,744 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 05:27:20,745 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082587270] [2019-11-24 05:27:20,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:27:20,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:27:20,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686659904] [2019-11-24 05:27:20,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:27:20,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:27:20,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:27:20,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:27:20,770 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:27:20,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:27:20,800 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:27:20,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:27:20,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:27:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:27:20,814 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:27:20,814 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:27:20,820 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 05:27:20,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:27:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:27:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:27:20,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:27:20,858 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:27:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:27:20,858 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:27:20,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:27:20,858 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:27:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:27:20,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:27:20,859 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:27:20,860 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:27:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:27:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1233524924, now seen corresponding path program 1 times [2019-11-24 05:27:20,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:27:20,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619181568] [2019-11-24 05:27:20,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:27:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:27:21,082 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 05:27:21,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619181568] [2019-11-24 05:27:21,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:27:21,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:27:21,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130618763] [2019-11-24 05:27:21,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:27:21,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:27:21,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:27:21,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:27:21,086 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 6 states. [2019-11-24 05:27:21,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:27:21,418 INFO L93 Difference]: Finished difference Result 72 states and 92 transitions. [2019-11-24 05:27:21,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:27:21,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:27:21,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:27:21,420 INFO L225 Difference]: With dead ends: 72 [2019-11-24 05:27:21,420 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:27:21,421 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 05:27:21,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:27:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2019-11-24 05:27:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-24 05:27:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-11-24 05:27:21,431 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 8 [2019-11-24 05:27:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:27:21,431 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-24 05:27:21,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:27:21,432 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2019-11-24 05:27:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:27:21,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:27:21,433 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:27:21,434 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:27:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:27:21,434 INFO L82 PathProgramCache]: Analyzing trace with hash 458294884, now seen corresponding path program 1 times [2019-11-24 05:27:21,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:27:21,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479325995] [2019-11-24 05:27:21,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:27:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:27:21,852 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 05:27:21,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479325995] [2019-11-24 05:27:21,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657044071] [2019-11-24 05:27:21,853 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 05:27:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:27:22,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-24 05:27:22,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:27:22,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,133 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,143 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,152 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,169 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,307 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 17 [2019-11-24 05:27:22,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:27:22,362 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 05:27:22,362 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:27:22,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,404 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,413 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,422 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,423 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,437 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,442 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,491 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:27:22,718 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 05:27:22,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310887820] [2019-11-24 05:27:22,744 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:27:22,744 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:27:22,751 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:27:22,758 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:27:22,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:27:30,520 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:27:32,303 WARN L192 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:27:32,434 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:27:33,003 WARN L192 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 577 [2019-11-24 05:27:34,098 WARN L192 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 677 [2019-11-24 05:27:38,711 WARN L192 SmtUtils]: Spent 3.84 s on a formula simplification. DAG size of input: 879 DAG size of output: 848 [2019-11-24 05:27:45,538 WARN L192 SmtUtils]: Spent 3.87 s on a formula simplification. DAG size of input: 845 DAG size of output: 833 [2019-11-24 05:27:58,728 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:28:03,259 WARN L192 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 484 DAG size of output: 429