/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_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:34:47,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:34:47,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:34:47,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:34:47,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:34:47,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:34:47,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:34:47,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:34:47,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:34:47,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:34:47,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:34:47,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:34:47,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:34:47,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:34:47,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:34:47,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:34:47,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:34:47,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:34:47,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:34:47,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:34:47,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:34:47,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:34:47,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:34:47,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:34:47,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:34:47,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:34:47,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:34:47,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:34:47,471 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 05:34:47,485 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:34:47,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:34:47,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:34:47,487 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:34:47,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:34:47,487 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:34:47,487 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:34:47,487 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:34:47,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:34:47,488 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:34:47,488 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:34:47,488 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:34:47,488 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:34:47,489 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:34:47,489 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:34:47,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:34:47,491 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:34:47,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:34:47,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:34:47,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:34:47,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:34:47,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:34:47,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:34:47,492 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:34:47,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:34:47,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:34:47,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:34:47,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:34:47,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:34:47,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:34:47,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:34:47,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:34:47,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:34:47,495 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:34:47,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:34:47,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:34:47,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:34:47,495 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:34:47,766 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:34:47,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:34:47,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:34:47,787 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:34:47,788 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:34:47,789 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-11-24 05:34:47,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300cf51c4/3898cd6e20694a8ba669c21762e315ac/FLAG230bce6a2 [2019-11-24 05:34:48,409 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:34:48,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-11-24 05:34:48,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300cf51c4/3898cd6e20694a8ba669c21762e315ac/FLAG230bce6a2 [2019-11-24 05:34:48,682 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300cf51c4/3898cd6e20694a8ba669c21762e315ac [2019-11-24 05:34:48,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:34:48,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:34:48,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:34:48,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:34:48,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:34:48,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d5a3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:48, skipping insertion in model container [2019-11-24 05:34:48,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:34:48" (1/1) ... [2019-11-24 05:34:48,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:34:48,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:34:49,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:34:49,230 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:34:49,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:34:49,381 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:34:49,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49 WrapperNode [2019-11-24 05:34:49,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:34:49,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:34:49,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:34:49,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:34:49,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:34:49,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:34:49,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:34:49,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:34:49,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (1/1) ... [2019-11-24 05:34:49,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:34:49,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:34:49,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:34:49,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:34:49,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (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 05:34:49,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:34:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:34:49,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:34:49,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:34:52,181 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:34:52,182 INFO L284 CfgBuilder]: Removed 212 assume(true) statements. [2019-11-24 05:34:52,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:34:52 BoogieIcfgContainer [2019-11-24 05:34:52,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:34:52,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:34:52,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:34:52,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:34:52,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:34:48" (1/3) ... [2019-11-24 05:34:52,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b13745f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:34:52, skipping insertion in model container [2019-11-24 05:34:52,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:34:49" (2/3) ... [2019-11-24 05:34:52,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b13745f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:34:52, skipping insertion in model container [2019-11-24 05:34:52,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:34:52" (3/3) ... [2019-11-24 05:34:52,196 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2019-11-24 05:34:52,206 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:34:52,214 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:34:52,229 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:34:52,259 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:34:52,260 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:34:52,260 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:34:52,260 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:34:52,260 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:34:52,260 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:34:52,261 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:34:52,261 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:34:52,278 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:34:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:34:52,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:52,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:52,289 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:52,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:52,296 INFO L82 PathProgramCache]: Analyzing trace with hash -2010904698, now seen corresponding path program 1 times [2019-11-24 05:34:52,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:52,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689984015] [2019-11-24 05:34:52,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:52,942 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 05:34:52,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689984015] [2019-11-24 05:34:52,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:34:52,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:34:52,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347991921] [2019-11-24 05:34:52,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:34:52,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:34:52,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:34:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:34:52,967 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-11-24 05:34:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:34:53,336 INFO L93 Difference]: Finished difference Result 87 states and 128 transitions. [2019-11-24 05:34:53,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:34:53,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:34:53,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:34:53,358 INFO L225 Difference]: With dead ends: 87 [2019-11-24 05:34:53,358 INFO L226 Difference]: Without dead ends: 53 [2019-11-24 05:34:53,366 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-24 05:34:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-24 05:34:53,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2019-11-24 05:34:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 05:34:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2019-11-24 05:34:53,421 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 8 [2019-11-24 05:34:53,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:34:53,422 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2019-11-24 05:34:53,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:34:53,422 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2019-11-24 05:34:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:34:53,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:34:53,425 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:34:53,425 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:34:53,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:34:53,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1495460127, now seen corresponding path program 1 times [2019-11-24 05:34:53,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:34:53,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640363975] [2019-11-24 05:34:53,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:34:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:53,622 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 05:34:53,624 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640363975] [2019-11-24 05:34:53,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703000119] [2019-11-24 05:34:53,625 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 05:34:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:34:53,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:34:53,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:34:53,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:53,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:53,866 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 05:34:53,866 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:34:53,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:53,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:34:53,898 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 05:34:53,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [870124217] [2019-11-24 05:34:53,952 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:34:53,952 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:34:53,960 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:34:53,969 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:34:53,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:35:04,366 WARN L192 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:35:06,229 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:35:06,391 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:35:07,052 WARN L192 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 653 DAG size of output: 615 [2019-11-24 05:35:08,566 WARN L192 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 715 [2019-11-24 05:35:22,781 WARN L192 SmtUtils]: Spent 7.84 s on a formula simplification. DAG size of input: 1611 DAG size of output: 1233 [2019-11-24 05:36:01,612 WARN L192 SmtUtils]: Spent 6.49 s on a formula simplification. DAG size of input: 1193 DAG size of output: 1151