/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_spec3_product41.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:25:57,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:25:57,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:25:57,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:25:57,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:25:57,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:25:57,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:25:57,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:25:57,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:25:57,316 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:25:57,317 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:25:57,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:25:57,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:25:57,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:25:57,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:25:57,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:25:57,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:25:57,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:25:57,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:25:57,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:25:57,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:25:57,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:25:57,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:25:57,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:25:57,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:25:57,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 05:25:57,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 05:25:57,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 05:25:57,351 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 05:25:57,365 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:25:57,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:25:57,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:25:57,367 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:25:57,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:25:57,367 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:25:57,367 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:25:57,367 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:25:57,368 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:25:57,368 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:25:57,368 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:25:57,368 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:25:57,368 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:25:57,369 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:25:57,369 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:25:57,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:25:57,370 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:25:57,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:25:57,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:25:57,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:25:57,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:25:57,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:25:57,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:25:57,372 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:25:57,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:25:57,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:25:57,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:25:57,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:25:57,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:25:57,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:25:57,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:25:57,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:25:57,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:25:57,374 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:25:57,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:25:57,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:25:57,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:25:57,375 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:25:57,629 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:25:57,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:25:57,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:25:57,654 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:25:57,654 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:25:57,655 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2019-11-24 05:25:57,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eaf96cc2/1fe0fd70d89742d5acce6c4aad687383/FLAGcbd59b49d [2019-11-24 05:25:58,213 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:25:58,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product41.cil.c [2019-11-24 05:25:58,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eaf96cc2/1fe0fd70d89742d5acce6c4aad687383/FLAGcbd59b49d [2019-11-24 05:25:58,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eaf96cc2/1fe0fd70d89742d5acce6c4aad687383 [2019-11-24 05:25:58,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:25:58,547 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:25:58,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:58,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:25:58,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:25:58,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:58" (1/1) ... [2019-11-24 05:25:58,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c97442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:58, skipping insertion in model container [2019-11-24 05:25:58,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:58" (1/1) ... [2019-11-24 05:25:58,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:25:58,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:25:59,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:59,133 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:25:59,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:59,275 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:25:59,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59 WrapperNode [2019-11-24 05:25:59,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:59,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:59,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:25:59,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:25:59,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:59,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:25:59,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:25:59,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:25:59,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (1/1) ... [2019-11-24 05:25:59,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:25:59,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:25:59,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:25:59,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:25:59,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (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 05:25:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:25:59,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:25:59,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:25:59,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:26:01,273 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:26:01,273 INFO L284 CfgBuilder]: Removed 120 assume(true) statements. [2019-11-24 05:26:01,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:01 BoogieIcfgContainer [2019-11-24 05:26:01,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:26:01,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:26:01,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:26:01,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:26:01,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:25:58" (1/3) ... [2019-11-24 05:26:01,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714b8a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:01, skipping insertion in model container [2019-11-24 05:26:01,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:59" (2/3) ... [2019-11-24 05:26:01,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714b8a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:01, skipping insertion in model container [2019-11-24 05:26:01,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:01" (3/3) ... [2019-11-24 05:26:01,286 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product41.cil.c [2019-11-24 05:26:01,295 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:26:01,303 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:26:01,314 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:26:01,334 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:26:01,334 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:26:01,334 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:26:01,334 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:26:01,335 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:26:01,335 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:26:01,335 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:26:01,335 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:26:01,351 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:26:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:26:01,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:01,358 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:01,358 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:01,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:01,364 INFO L82 PathProgramCache]: Analyzing trace with hash -14545312, now seen corresponding path program 1 times [2019-11-24 05:26:01,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:01,373 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853095506] [2019-11-24 05:26:01,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:01,902 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 05:26:01,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853095506] [2019-11-24 05:26:01,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:26:01,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:26:01,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457040952] [2019-11-24 05:26:01,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:26:01,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:26:01,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:26:01,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:26:01,930 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-11-24 05:26:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:26:02,281 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2019-11-24 05:26:02,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:26:02,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:26:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:26:02,294 INFO L225 Difference]: With dead ends: 95 [2019-11-24 05:26:02,294 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 05:26:02,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-24 05:26:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 05:26:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 33. [2019-11-24 05:26:02,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-24 05:26:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2019-11-24 05:26:02,339 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 8 [2019-11-24 05:26:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:26:02,340 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2019-11-24 05:26:02,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:26:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2019-11-24 05:26:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:26:02,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:02,341 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:02,342 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:02,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:02,342 INFO L82 PathProgramCache]: Analyzing trace with hash 617407882, now seen corresponding path program 1 times [2019-11-24 05:26:02,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:02,343 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237774763] [2019-11-24 05:26:02,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:02,562 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 05:26:02,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237774763] [2019-11-24 05:26:02,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401461285] [2019-11-24 05:26:02,564 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 05:26:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:02,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 05:26:02,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:26:02,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:02,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:02,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:02,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:26:02,882 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:26:02,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:26:02,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1425056748] [2019-11-24 05:26:02,943 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:26:02,943 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:26:02,952 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:26:02,958 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:26:02,959 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:26:12,291 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:26:13,897 WARN L192 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:26:14,027 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:26:14,581 WARN L192 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 594 DAG size of output: 594 [2019-11-24 05:26:15,511 WARN L192 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 695 [2019-11-24 05:26:19,555 WARN L192 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 918 DAG size of output: 862 [2019-11-24 05:26:24,283 WARN L192 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 857 DAG size of output: 849 [2019-11-24 05:26:32,806 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:26:37,276 WARN L192 SmtUtils]: Spent 4.32 s on a formula simplification. DAG size of input: 484 DAG size of output: 429