/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_spec2_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:22:05,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:22:05,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:22:05,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:22:05,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:22:05,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:22:05,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:22:05,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:22:05,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:22:05,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:22:05,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:22:05,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:22:05,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:22:05,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:22:05,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:22:05,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:22:05,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:22:05,221 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 05:22:05,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:22:05,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:22:05,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:22:05,237 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:22:05,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:22:05,237 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:22:05,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:22:05,237 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:22:05,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:22:05,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:22:05,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:22:05,238 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:22:05,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:22:05,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:22:05,239 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:22:05,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:22:05,240 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:22:05,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:22:05,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:22:05,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:22:05,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:22:05,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:22:05,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:22:05,241 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:22:05,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:22:05,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:22:05,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:22:05,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:22:05,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:22:05,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:22:05,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:22:05,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:22:05,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:22:05,243 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:22:05,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:22:05,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:22:05,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:22:05,244 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:22:05,491 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:22:05,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:22:05,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:22:05,516 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:22:05,516 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:22:05,517 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product48.cil.c [2019-11-24 05:22:05,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1f50e1a/6ffe24309397476b846eb406c1338880/FLAG0c8ab58d7 [2019-11-24 05:22:06,130 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:22:06,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product48.cil.c [2019-11-24 05:22:06,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1f50e1a/6ffe24309397476b846eb406c1338880/FLAG0c8ab58d7 [2019-11-24 05:22:06,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1f50e1a/6ffe24309397476b846eb406c1338880 [2019-11-24 05:22:06,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:22:06,417 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:22:06,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:22:06,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:22:06,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:22:06,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:22:06" (1/1) ... [2019-11-24 05:22:06,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d5a3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:06, skipping insertion in model container [2019-11-24 05:22:06,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:22:06" (1/1) ... [2019-11-24 05:22:06,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:22:06,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:22:06,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:22:06,926 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:22:07,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:22:07,063 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:22:07,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07 WrapperNode [2019-11-24 05:22:07,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:22:07,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:22:07,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:22:07,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:22:07,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:22:07,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:22:07,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:22:07,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:22:07,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... [2019-11-24 05:22:07,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:22:07,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:22:07,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:22:07,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:22:07,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:22:07,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:22:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:22:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:22:07,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:22:09,788 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:22:09,789 INFO L284 CfgBuilder]: Removed 200 assume(true) statements. [2019-11-24 05:22:09,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:22:09 BoogieIcfgContainer [2019-11-24 05:22:09,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:22:09,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:22:09,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:22:09,795 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:22:09,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:22:06" (1/3) ... [2019-11-24 05:22:09,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c69c75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:22:09, skipping insertion in model container [2019-11-24 05:22:09,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:22:07" (2/3) ... [2019-11-24 05:22:09,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c69c75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:22:09, skipping insertion in model container [2019-11-24 05:22:09,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:22:09" (3/3) ... [2019-11-24 05:22:09,800 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product48.cil.c [2019-11-24 05:22:09,809 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:22:09,817 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:22:09,828 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:22:09,854 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:22:09,854 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:22:09,854 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:22:09,854 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:22:09,856 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:22:09,856 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:22:09,856 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:22:09,856 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:22:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:22:09,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:22:09,886 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:22:09,886 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:22:09,887 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:22:09,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:22:09,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1158295530, now seen corresponding path program 1 times [2019-11-24 05:22:09,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:22:09,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129095940] [2019-11-24 05:22:09,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:22:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:10,329 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 05:22:10,330 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129095940] [2019-11-24 05:22:10,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:22:10,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:22:10,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643672921] [2019-11-24 05:22:10,338 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:22:10,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:22:10,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:22:10,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:22:10,351 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-11-24 05:22:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:22:10,430 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2019-11-24 05:22:10,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:22:10,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:22:10,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:22:10,444 INFO L225 Difference]: With dead ends: 68 [2019-11-24 05:22:10,444 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:22:10,448 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:22:10,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:22:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:22:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:22:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:22:10,489 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:22:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:22:10,489 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:22:10,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:22:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:22:10,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:22:10,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:22:10,491 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:22:10,491 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:22:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:22:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash 63628689, now seen corresponding path program 1 times [2019-11-24 05:22:10,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:22:10,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390577271] [2019-11-24 05:22:10,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:22:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:22:10,916 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390577271] [2019-11-24 05:22:10,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:22:10,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:22:10,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595976037] [2019-11-24 05:22:10,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:22:10,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:22:10,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:22:10,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:22:10,919 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand 5 states. [2019-11-24 05:22:11,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:22:11,105 INFO L93 Difference]: Finished difference Result 108 states and 146 transitions. [2019-11-24 05:22:11,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 05:22:11,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 05:22:11,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:22:11,107 INFO L225 Difference]: With dead ends: 108 [2019-11-24 05:22:11,107 INFO L226 Difference]: Without dead ends: 55 [2019-11-24 05:22:11,108 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:22:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-24 05:22:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2019-11-24 05:22:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-24 05:22:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2019-11-24 05:22:11,117 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 13 [2019-11-24 05:22:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:22:11,117 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2019-11-24 05:22:11,118 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:22:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2019-11-24 05:22:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-24 05:22:11,119 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:22:11,119 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-24 05:22:11,119 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:22:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:22:11,120 INFO L82 PathProgramCache]: Analyzing trace with hash -709588723, now seen corresponding path program 1 times [2019-11-24 05:22:11,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:22:11,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919586483] [2019-11-24 05:22:11,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:22:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:22:11,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919586483] [2019-11-24 05:22:11,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310711898] [2019-11-24 05:22:11,667 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 05:22:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:22:11,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 53 conjunts are in the unsatisfiable core [2019-11-24 05:22:11,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:22:11,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:11,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:11,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,247 WARN L192 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2019-11-24 05:22:12,438 WARN L192 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-11-24 05:22:12,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,463 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,474 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,483 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,484 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,502 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,522 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:12,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:13,759 WARN L192 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 143 DAG size of output: 91 [2019-11-24 05:22:14,233 WARN L192 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2019-11-24 05:22:14,254 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 05:22:14,255 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:22:14,305 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,319 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,335 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,342 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,352 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,466 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:22:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:22:14,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [849821960] [2019-11-24 05:22:14,573 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:22:14,573 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:22:14,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:22:14,586 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:22:14,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:22:23,556 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:22:25,225 WARN L192 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:22:25,394 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:22:25,992 WARN L192 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 622 DAG size of output: 602 [2019-11-24 05:22:27,309 WARN L192 SmtUtils]: Spent 972.00 ms on a formula simplification that was a NOOP. DAG size: 703 [2019-11-24 05:22:33,402 WARN L192 SmtUtils]: Spent 4.60 s on a formula simplification. DAG size of input: 1005 DAG size of output: 904 [2019-11-24 05:22:40,207 WARN L192 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 897 DAG size of output: 886 [2019-11-24 05:23:30,002 WARN L192 SmtUtils]: Spent 41.76 s on a formula simplification. DAG size of input: 3001 DAG size of output: 2229