/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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:33:07,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:33:07,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:33:07,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:33:07,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:33:07,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:33:07,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:33:07,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:33:07,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:33:07,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:33:07,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:33:07,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:33:07,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:33:07,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:33:07,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:33:07,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:33:07,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:33:07,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:33:07,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:33:07,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:33:07,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:33:07,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:33:07,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:33:07,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:33:07,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:33:07,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:33:07,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:33:07,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:33:07,198 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 05:33:07,213 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:33:07,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:33:07,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:33:07,214 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:33:07,215 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:33:07,215 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:33:07,215 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:33:07,215 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:33:07,215 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:33:07,216 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:33:07,216 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:33:07,216 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:33:07,216 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:33:07,217 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:33:07,217 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:33:07,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:33:07,218 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:33:07,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:33:07,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:33:07,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:33:07,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:33:07,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:33:07,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:33:07,219 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:33:07,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:33:07,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:33:07,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:33:07,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:33:07,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:33:07,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:33:07,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:33:07,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:33:07,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:33:07,221 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:33:07,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:33:07,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:33:07,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:33:07,222 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:33:07,490 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:33:07,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:33:07,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:33:07,517 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:33:07,517 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:33:07,518 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-11-24 05:33:07,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cd992cb/9bdcebf69e9b446685c6922cd4a97e74/FLAGa0447b875 [2019-11-24 05:33:08,182 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:33:08,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2019-11-24 05:33:08,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cd992cb/9bdcebf69e9b446685c6922cd4a97e74/FLAGa0447b875 [2019-11-24 05:33:08,419 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18cd992cb/9bdcebf69e9b446685c6922cd4a97e74 [2019-11-24 05:33:08,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:33:08,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:33:08,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:33:08,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:33:08,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:33:08,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7d9541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08, skipping insertion in model container [2019-11-24 05:33:08,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:33:08,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:33:08,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:33:08,988 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:33:09,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:33:09,138 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:33:09,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:09 WrapperNode [2019-11-24 05:33:09,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:33:09,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:33:09,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:33:09,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:33:09,147 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 05:33:09,166 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 05:33:09,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:33:09,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:33:09,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:33:09,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:33:09,220 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 05:33:09,220 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 05:33:09,225 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 05:33:09,225 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 05:33:09,235 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 05:33:09,243 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 05:33:09,246 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 05:33:09,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:33:09,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:33:09,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:33:09,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:33:09,260 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 05:33:09,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:33:09,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:33:09,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:33:09,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:33:10,830 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:33:10,831 INFO L284 CfgBuilder]: Removed 114 assume(true) statements. [2019-11-24 05:33:10,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:33:10 BoogieIcfgContainer [2019-11-24 05:33:10,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:33:10,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:33:10,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:33:10,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:33:10,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:33:08" (1/3) ... [2019-11-24 05:33:10,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bec21ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:33:10, skipping insertion in model container [2019-11-24 05:33:10,838 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 05:33:10,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bec21ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:33:10, skipping insertion in model container [2019-11-24 05:33:10,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:33:10" (3/3) ... [2019-11-24 05:33:10,840 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2019-11-24 05:33:10,850 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:33:10,858 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:33:10,869 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:33:10,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:33:10,894 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:33:10,894 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:33:10,894 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:33:10,895 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:33:10,895 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:33:10,895 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:33:10,895 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:33:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:33:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:33:10,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:33:10,918 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:33:10,919 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:33:10,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:33:10,925 INFO L82 PathProgramCache]: Analyzing trace with hash -547335085, now seen corresponding path program 1 times [2019-11-24 05:33:10,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:33:10,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034309462] [2019-11-24 05:33:10,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:33:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:11,202 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 05:33:11,203 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034309462] [2019-11-24 05:33:11,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:33:11,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:33:11,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842688244] [2019-11-24 05:33:11,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:33:11,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:33:11,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:33:11,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:33:11,227 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:33:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:33:11,249 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:33:11,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:33:11,250 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:33:11,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:33:11,261 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:33:11,262 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:33:11,265 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 05:33:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:33:11,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:33:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:33:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:33:11,301 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:33:11,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:33:11,302 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:33:11,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:33:11,303 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:33:11,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:33:11,304 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:33:11,304 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:33:11,305 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:33:11,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:33:11,305 INFO L82 PathProgramCache]: Analyzing trace with hash 930893795, now seen corresponding path program 1 times [2019-11-24 05:33:11,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:33:11,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728015768] [2019-11-24 05:33:11,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:33:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:11,630 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 05:33:11,631 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728015768] [2019-11-24 05:33:11,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:33:11,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:33:11,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631332349] [2019-11-24 05:33:11,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:33:11,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:33:11,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:33:11,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:33:11,635 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 5 states. [2019-11-24 05:33:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:33:11,823 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2019-11-24 05:33:11,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:33:11,823 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:33:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:33:11,825 INFO L225 Difference]: With dead ends: 80 [2019-11-24 05:33:11,825 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:33:11,826 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 05:33:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:33:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:33:11,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:33:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:33:11,854 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:33:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:33:11,854 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:33:11,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:33:11,855 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:33:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:33:11,855 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:33:11,855 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:33:11,856 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:33:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:33:11,856 INFO L82 PathProgramCache]: Analyzing trace with hash 677701152, now seen corresponding path program 1 times [2019-11-24 05:33:11,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:33:11,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543073172] [2019-11-24 05:33:11,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:33:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:12,140 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 05:33:12,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543073172] [2019-11-24 05:33:12,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258193738] [2019-11-24 05:33:12,142 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 05:33:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:12,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:33:12,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:33:12,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:12,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:12,368 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 05:33:12,368 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:33:12,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:12,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:12,420 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 05:33:12,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1806868] [2019-11-24 05:33:12,453 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:33:12,461 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:33:12,469 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:33:12,478 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:33:12,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:33:21,620 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:33:23,331 WARN L192 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:33:23,482 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:33:24,048 WARN L192 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 604 DAG size of output: 594 [2019-11-24 05:33:25,440 WARN L192 SmtUtils]: Spent 954.00 ms on a formula simplification that was a NOOP. DAG size: 694 [2019-11-24 05:33:27,322 WARN L192 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 766 DAG size of output: 746 [2019-11-24 05:33:31,906 WARN L192 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 750 DAG size of output: 749 [2019-11-24 05:33:52,914 WARN L192 SmtUtils]: Spent 16.46 s on a formula simplification. DAG size of input: 1473 DAG size of output: 1117 [2019-11-24 05:34:19,555 WARN L192 SmtUtils]: Spent 8.39 s on a formula simplification. DAG size of input: 1053 DAG size of output: 1001