/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/email_spec27_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:56:17,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:56:17,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:56:17,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:56:17,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:56:17,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:56:17,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:56:17,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:56:17,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:56:17,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:56:17,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:56:17,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:56:17,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:56:17,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:56:17,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:56:17,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:56:17,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:56:17,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:56:17,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:56:17,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:56:17,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:56:17,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:56:17,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:56:17,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:56:17,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 04:56:17,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 04:56:17,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 04:56:17,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 04:56:17,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 04:56:17,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 04:56:17,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 04:56:17,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 04:56:17,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 04:56:17,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 04:56:17,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 04:56:17,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 04:56:17,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 04:56:17,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 04:56:17,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:56:17,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:56:17,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:56:17,277 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 04:56:17,292 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:56:17,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:56:17,293 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:56:17,293 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:56:17,293 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:56:17,294 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:56:17,294 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:56:17,294 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:56:17,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:56:17,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:56:17,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:56:17,295 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:56:17,295 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:56:17,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:56:17,295 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:56:17,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:56:17,296 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:56:17,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:56:17,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:56:17,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:56:17,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:56:17,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:56:17,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:56:17,298 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:56:17,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:56:17,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:56:17,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:56:17,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:56:17,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:56:17,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:56:17,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:56:17,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:56:17,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:56:17,300 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:56:17,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:56:17,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:56:17,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:56:17,301 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:56:17,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:56:17,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:56:17,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:56:17,623 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:56:17,624 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:56:17,624 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c [2019-11-24 04:56:17,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be24e656/9ff2c7a4c7454cf6be5a20a7ff403e33/FLAG85adbf64a [2019-11-24 04:56:18,287 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:56:18,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c [2019-11-24 04:56:18,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be24e656/9ff2c7a4c7454cf6be5a20a7ff403e33/FLAG85adbf64a [2019-11-24 04:56:18,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be24e656/9ff2c7a4c7454cf6be5a20a7ff403e33 [2019-11-24 04:56:18,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:56:18,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:56:18,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:56:18,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:56:18,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:56:18,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:56:18" (1/1) ... [2019-11-24 04:56:18,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f1b3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:18, skipping insertion in model container [2019-11-24 04:56:18,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:56:18" (1/1) ... [2019-11-24 04:56:18,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:56:18,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:56:19,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:56:19,477 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:56:19,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:56:19,722 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:56:19,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19 WrapperNode [2019-11-24 04:56:19,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:56:19,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:56:19,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:56:19,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:56:19,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:19,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:19,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:56:19,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:56:19,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:56:19,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:56:19,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:19,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:19,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:19,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:19,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:20,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:20,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (1/1) ... [2019-11-24 04:56:20,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:56:20,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:56:20,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:56:20,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:56:20,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (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 04:56:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-24 04:56:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 04:56:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 04:56:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:56:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:56:31,292 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:56:31,293 INFO L284 CfgBuilder]: Removed 449 assume(true) statements. [2019-11-24 04:56:31,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:56:31 BoogieIcfgContainer [2019-11-24 04:56:31,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:56:31,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:56:31,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:56:31,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:56:31,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:56:18" (1/3) ... [2019-11-24 04:56:31,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7252f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:56:31, skipping insertion in model container [2019-11-24 04:56:31,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:56:19" (2/3) ... [2019-11-24 04:56:31,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7252f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:56:31, skipping insertion in model container [2019-11-24 04:56:31,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:56:31" (3/3) ... [2019-11-24 04:56:31,309 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product17.cil.c [2019-11-24 04:56:31,319 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:56:31,328 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 04:56:31,339 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 04:56:31,367 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:56:31,367 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:56:31,367 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:56:31,368 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:56:31,368 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:56:31,368 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:56:31,368 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:56:31,368 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:56:31,386 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2019-11-24 04:56:31,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:56:31,393 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:56:31,394 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:56:31,395 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:56:31,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:56:31,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2093599864, now seen corresponding path program 1 times [2019-11-24 04:56:31,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:56:31,411 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113412513] [2019-11-24 04:56:31,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:56:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:56:31,788 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 04:56:31,789 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113412513] [2019-11-24 04:56:31,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:56:31,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 04:56:31,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216222659] [2019-11-24 04:56:31,794 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 04:56:31,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:56:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 04:56:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 04:56:31,808 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 2 states. [2019-11-24 04:56:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:56:31,835 INFO L93 Difference]: Finished difference Result 100 states and 153 transitions. [2019-11-24 04:56:31,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 04:56:31,837 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-24 04:56:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:56:31,849 INFO L225 Difference]: With dead ends: 100 [2019-11-24 04:56:31,850 INFO L226 Difference]: Without dead ends: 59 [2019-11-24 04:56:31,853 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 04:56:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-24 04:56:31,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2019-11-24 04:56:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-24 04:56:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2019-11-24 04:56:31,898 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 8 [2019-11-24 04:56:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:56:31,898 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2019-11-24 04:56:31,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 04:56:31,899 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2019-11-24 04:56:31,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 04:56:31,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:56:31,900 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:56:31,900 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:56:31,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:56:31,901 INFO L82 PathProgramCache]: Analyzing trace with hash 73960770, now seen corresponding path program 1 times [2019-11-24 04:56:31,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:56:31,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999522708] [2019-11-24 04:56:31,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:56:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:56:32,058 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 04:56:32,058 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999522708] [2019-11-24 04:56:32,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:56:32,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:56:32,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89476267] [2019-11-24 04:56:32,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 04:56:32,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:56:32,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 04:56:32,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 04:56:32,063 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand 3 states. [2019-11-24 04:56:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:56:32,086 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2019-11-24 04:56:32,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 04:56:32,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-24 04:56:32,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:56:32,090 INFO L225 Difference]: With dead ends: 94 [2019-11-24 04:56:32,090 INFO L226 Difference]: Without dead ends: 61 [2019-11-24 04:56:32,092 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 04:56:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-24 04:56:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-24 04:56:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-24 04:56:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2019-11-24 04:56:32,112 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 9 [2019-11-24 04:56:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:56:32,115 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2019-11-24 04:56:32,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 04:56:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2019-11-24 04:56:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:56:32,117 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:56:32,118 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:56:32,118 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:56:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:56:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash -520599670, now seen corresponding path program 1 times [2019-11-24 04:56:32,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:56:32,120 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191200806] [2019-11-24 04:56:32,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:56:32,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:56:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 04:56:32,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191200806] [2019-11-24 04:56:32,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:56:32,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 04:56:32,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007339181] [2019-11-24 04:56:32,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:56:32,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:56:32,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:56:32,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:56:32,380 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand 5 states. [2019-11-24 04:56:32,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:56:32,628 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2019-11-24 04:56:32,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:56:32,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-24 04:56:32,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:56:32,631 INFO L225 Difference]: With dead ends: 136 [2019-11-24 04:56:32,631 INFO L226 Difference]: Without dead ends: 110 [2019-11-24 04:56:32,632 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:56:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-11-24 04:56:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2019-11-24 04:56:32,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-24 04:56:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 137 transitions. [2019-11-24 04:56:32,644 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 137 transitions. Word has length 13 [2019-11-24 04:56:32,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:56:32,644 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 137 transitions. [2019-11-24 04:56:32,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:56:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 137 transitions. [2019-11-24 04:56:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:56:32,645 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:56:32,645 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:56:32,646 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:56:32,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:56:32,646 INFO L82 PathProgramCache]: Analyzing trace with hash -524625576, now seen corresponding path program 1 times [2019-11-24 04:56:32,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:56:32,647 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014436350] [2019-11-24 04:56:32,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:56:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:56:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:56:32,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014436350] [2019-11-24 04:56:32,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258186528] [2019-11-24 04:56:32,882 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 04:56:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:56:33,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 04:56:33,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:56:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:56:33,289 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:56:33,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:56:33,329 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1517598645] [2019-11-24 04:56:33,390 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-24 04:56:33,391 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:56:33,399 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:56:33,513 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:56:33,514 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:57:09,681 WARN L192 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 676 [2019-11-24 04:57:13,216 WARN L192 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 294 DAG size of output: 239 [2019-11-24 04:57:13,570 WARN L192 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 715 [2019-11-24 04:57:13,770 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8