/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:33:07,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:33:07,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:33:07,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:33:07,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:33:07,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:33:07,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:33:07,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:33:07,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:33:07,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:33:07,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:33:07,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:33:07,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:33:07,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:33:07,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:33:07,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:33:07,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:33:07,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:33:07,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:33:07,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:33:07,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:33:07,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:33:07,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:33:07,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:33:07,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:33:07,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:33:07,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:33:07,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:33:07,896 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 05:33:07,910 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:33:07,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:33:07,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:33:07,912 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:33:07,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:33:07,912 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:33:07,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:33:07,912 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:33:07,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:33:07,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:33:07,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:33:07,913 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:33:07,913 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:33:07,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:33:07,914 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:33:07,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:33:07,915 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:33:07,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:33:07,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:33:07,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:33:07,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:33:07,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:33:07,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:33:07,916 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:33:07,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:33:07,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:33:07,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:33:07,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:33:07,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:33:07,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:33:07,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:33:07,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:33:07,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:33:07,918 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:33:07,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:33:07,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:33:07,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:33:07,919 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:33:08,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:33:08,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:33:08,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:33:08,188 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:33:08,189 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:33:08,189 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2019-11-24 05:33:08,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1691b406c/78fa21e1cbce444d92d215968b37f958/FLAG673d8db31 [2019-11-24 05:33:08,768 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:33:08,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product36.cil.c [2019-11-24 05:33:08,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1691b406c/78fa21e1cbce444d92d215968b37f958/FLAG673d8db31 [2019-11-24 05:33:09,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1691b406c/78fa21e1cbce444d92d215968b37f958 [2019-11-24 05:33:09,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:33:09,146 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:33:09,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:33:09,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:33:09,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:33:09,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734ee26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09, skipping insertion in model container [2019-11-24 05:33:09,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:33:09,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:33:09,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:33:09,641 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:33:09,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:33:09,778 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:33:09,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09 WrapperNode [2019-11-24 05:33:09,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:33:09,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:33:09,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:33:09,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:33:09,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:33:09,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:33:09,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:33:09,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:33:09,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (1/1) ... [2019-11-24 05:33:09,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:33:09,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:33:09,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:33:09,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:33:09,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (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 05:33:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:33:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:33:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:33:09,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:33:11,508 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:33:11,509 INFO L284 CfgBuilder]: Removed 116 assume(true) statements. [2019-11-24 05:33:11,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:33:11 BoogieIcfgContainer [2019-11-24 05:33:11,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:33:11,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:33:11,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:33:11,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:33:11,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:33:09" (1/3) ... [2019-11-24 05:33:11,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d45e470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:33:11, skipping insertion in model container [2019-11-24 05:33:11,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09" (2/3) ... [2019-11-24 05:33:11,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d45e470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:33:11, skipping insertion in model container [2019-11-24 05:33:11,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:33:11" (3/3) ... [2019-11-24 05:33:11,521 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product36.cil.c [2019-11-24 05:33:11,532 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:33:11,540 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:33:11,552 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:33:11,582 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:33:11,583 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:33:11,583 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:33:11,583 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:33:11,583 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:33:11,583 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:33:11,584 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:33:11,584 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:33:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:33:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:33:11,606 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:33:11,607 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:33:11,608 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:33:11,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:33:11,613 INFO L82 PathProgramCache]: Analyzing trace with hash -67468981, now seen corresponding path program 1 times [2019-11-24 05:33:11,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:33:11,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626557189] [2019-11-24 05:33:11,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:33:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:12,224 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 05:33:12,226 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626557189] [2019-11-24 05:33:12,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:33:12,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:33:12,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090104231] [2019-11-24 05:33:12,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:33:12,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:33:12,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:33:12,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:33:12,252 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-11-24 05:33:12,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:33:12,451 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2019-11-24 05:33:12,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:33:12,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:33:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:33:12,474 INFO L225 Difference]: With dead ends: 92 [2019-11-24 05:33:12,474 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:33:12,480 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:33:12,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:33:12,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:33:12,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:33:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:33:12,525 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:33:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:33:12,526 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:33:12,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:33:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:33:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:33:12,527 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:33:12,527 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:33:12,528 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:33:12,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:33:12,528 INFO L82 PathProgramCache]: Analyzing trace with hash 799339443, now seen corresponding path program 1 times [2019-11-24 05:33:12,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:33:12,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330164734] [2019-11-24 05:33:12,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:33:12,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:33:12,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330164734] [2019-11-24 05:33:12,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228101582] [2019-11-24 05:33:12,787 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 05:33:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:12,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:33:12,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:33:12,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:12,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:12,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:33:13,104 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:33:13,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,132 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:33:13,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1199496404] [2019-11-24 05:33:13,212 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:33:13,213 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:33:13,220 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:33:13,227 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:33:13,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:33:22,462 WARN L192 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:33:23,952 WARN L192 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:33:24,134 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:33:29,694 WARN L192 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 715 DAG size of output: 705 [2019-11-24 05:33:30,683 WARN L192 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 705 DAG size of output: 705 [2019-11-24 05:33:35,132 WARN L192 SmtUtils]: Spent 3.53 s on a formula simplification. DAG size of input: 929 DAG size of output: 910 [2019-11-24 05:33:39,910 WARN L192 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 907 DAG size of output: 892 [2019-11-24 05:33:48,012 WARN L192 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 896 DAG size of output: 895 [2019-11-24 05:33:49,658 WARN L192 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 896 DAG size of output: 895 [2019-11-24 05:33:51,698 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 894 DAG size of output: 894 [2019-11-24 05:33:53,343 WARN L192 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 896 DAG size of output: 895 [2019-11-24 05:33:54,978 WARN L192 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 896 DAG size of output: 895 [2019-11-24 05:33:56,865 WARN L192 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 894 DAG size of output: 894 [2019-11-24 05:33:56,870 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:34:07,151 WARN L192 SmtUtils]: Spent 10.08 s on a formula simplification. DAG size of input: 885 DAG size of output: 207 [2019-11-24 05:34:11,456 WARN L192 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:34:25,515 WARN L192 SmtUtils]: Spent 13.72 s on a formula simplification. DAG size of input: 886 DAG size of output: 568