/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_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:21:14,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:21:14,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:21:14,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:21:14,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:21:14,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:21:14,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:21:14,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:21:14,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:21:14,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:21:14,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:21:14,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:21:14,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:21:14,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:21:14,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:21:14,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:21:14,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:21:14,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:21:14,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:21:14,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:21:14,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:21:14,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:21:14,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:21:14,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:21:14,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:21:14,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:21:14,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:21:14,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:21:14,298 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 05:21:14,323 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:21:14,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:21:14,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:21:14,324 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:21:14,325 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:21:14,325 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:21:14,325 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:21:14,325 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:21:14,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:21:14,326 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:21:14,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:21:14,327 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:21:14,327 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:21:14,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:21:14,328 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:21:14,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:21:14,329 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:21:14,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:21:14,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:21:14,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:21:14,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:21:14,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:21:14,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:21:14,331 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:21:14,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:21:14,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:21:14,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:21:14,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:21:14,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:21:14,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:21:14,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:21:14,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:21:14,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:21:14,334 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:21:14,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:21:14,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:21:14,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:21:14,335 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:21:14,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:21:14,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:21:14,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:21:14,626 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:21:14,627 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:21:14,628 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2019-11-24 05:21:14,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8625b71dc/d2624460257f48e58b1fa0743baaa3e8/FLAG40d8bc690 [2019-11-24 05:21:15,192 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:21:15,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product40.cil.c [2019-11-24 05:21:15,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8625b71dc/d2624460257f48e58b1fa0743baaa3e8/FLAG40d8bc690 [2019-11-24 05:21:15,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8625b71dc/d2624460257f48e58b1fa0743baaa3e8 [2019-11-24 05:21:15,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:21:15,532 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:21:15,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:21:15,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:21:15,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:21:15,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:21:15" (1/1) ... [2019-11-24 05:21:15,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83f7f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:15, skipping insertion in model container [2019-11-24 05:21:15,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:21:15" (1/1) ... [2019-11-24 05:21:15,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:21:15,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:21:15,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:21:16,050 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:21:16,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:21:16,253 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:21:16,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16 WrapperNode [2019-11-24 05:21:16,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:21:16,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:21:16,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:21:16,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:21:16,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:21:16,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:21:16,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:21:16,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:21:16,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (1/1) ... [2019-11-24 05:21:16,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:21:16,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:21:16,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:21:16,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:21:16,376 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (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 05:21:16,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:21:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:21:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:21:16,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:21:18,686 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:21:18,686 INFO L284 CfgBuilder]: Removed 164 assume(true) statements. [2019-11-24 05:21:18,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:21:18 BoogieIcfgContainer [2019-11-24 05:21:18,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:21:18,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:21:18,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:21:18,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:21:18,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:21:15" (1/3) ... [2019-11-24 05:21:18,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4024216a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:21:18, skipping insertion in model container [2019-11-24 05:21:18,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:21:16" (2/3) ... [2019-11-24 05:21:18,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4024216a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:21:18, skipping insertion in model container [2019-11-24 05:21:18,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:21:18" (3/3) ... [2019-11-24 05:21:18,697 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2019-11-24 05:21:18,710 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:21:18,718 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:21:18,734 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:21:18,763 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:21:18,763 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:21:18,763 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:21:18,763 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:21:18,764 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:21:18,764 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:21:18,764 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:21:18,764 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:21:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:21:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:21:18,792 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:18,793 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:21:18,793 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:18,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:18,802 INFO L82 PathProgramCache]: Analyzing trace with hash 290811345, now seen corresponding path program 1 times [2019-11-24 05:21:18,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:18,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014225980] [2019-11-24 05:21:18,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:19,114 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 05:21:19,115 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014225980] [2019-11-24 05:21:19,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:21:19,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 05:21:19,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534175596] [2019-11-24 05:21:19,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 05:21:19,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:21:19,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 05:21:19,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 05:21:19,141 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-24 05:21:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:21:19,164 INFO L93 Difference]: Finished difference Result 50 states and 75 transitions. [2019-11-24 05:21:19,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 05:21:19,167 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 05:21:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:21:19,177 INFO L225 Difference]: With dead ends: 50 [2019-11-24 05:21:19,178 INFO L226 Difference]: Without dead ends: 24 [2019-11-24 05:21:19,181 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 05:21:19,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-24 05:21:19,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-24 05:21:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-24 05:21:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2019-11-24 05:21:19,218 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 8 [2019-11-24 05:21:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:21:19,218 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2019-11-24 05:21:19,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 05:21:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2019-11-24 05:21:19,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:21:19,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:19,219 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:21:19,220 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:19,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:19,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1424482482, now seen corresponding path program 1 times [2019-11-24 05:21:19,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:19,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218981893] [2019-11-24 05:21:19,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:19,336 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 05:21:19,337 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218981893] [2019-11-24 05:21:19,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:21:19,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 05:21:19,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506252131] [2019-11-24 05:21:19,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 05:21:19,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:21:19,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 05:21:19,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 05:21:19,343 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand 3 states. [2019-11-24 05:21:19,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:21:19,423 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2019-11-24 05:21:19,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 05:21:19,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-24 05:21:19,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:21:19,425 INFO L225 Difference]: With dead ends: 46 [2019-11-24 05:21:19,425 INFO L226 Difference]: Without dead ends: 40 [2019-11-24 05:21:19,427 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 05:21:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-24 05:21:19,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-11-24 05:21:19,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 05:21:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2019-11-24 05:21:19,444 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 8 [2019-11-24 05:21:19,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:21:19,444 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2019-11-24 05:21:19,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 05:21:19,445 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2019-11-24 05:21:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 05:21:19,446 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:21:19,446 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-24 05:21:19,447 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:21:19,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:21:19,447 INFO L82 PathProgramCache]: Analyzing trace with hash 665095110, now seen corresponding path program 1 times [2019-11-24 05:21:19,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:21:19,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605154993] [2019-11-24 05:21:19,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:21:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:19,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605154993] [2019-11-24 05:21:19,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600357420] [2019-11-24 05:21:19,816 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 05:21:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:21:20,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-24 05:21:20,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:21:20,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,548 WARN L192 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2019-11-24 05:21:20,758 WARN L192 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-11-24 05:21:20,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:20,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:21,073 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:21:21,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,103 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,119 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:21:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:21:21,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [517499082] [2019-11-24 05:21:21,315 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:21:21,315 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:21:21,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:21:21,328 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:21:21,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:21:30,025 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:21:31,728 WARN L192 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:21:31,892 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:21:34,369 WARN L192 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 892 DAG size of output: 811 [2019-11-24 05:21:40,578 WARN L192 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 908 DAG size of output: 906 [2019-11-24 05:21:41,538 WARN L192 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-11-24 05:21:41,856 WARN L192 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-11-24 05:21:42,199 WARN L192 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-11-24 05:21:42,479 WARN L192 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-11-24 05:21:42,781 WARN L192 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-11-24 05:21:43,080 WARN L192 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 705 [2019-11-24 05:21:43,082 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:21:47,579 WARN L192 SmtUtils]: Spent 4.25 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:22:09,034 WARN L192 SmtUtils]: Spent 20.98 s on a formula simplification. DAG size of input: 705 DAG size of output: 523 [2019-11-24 05:22:43,929 WARN L192 SmtUtils]: Spent 34.35 s on a formula simplification. DAG size of input: 893 DAG size of output: 584