/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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:52:03,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:52:03,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:52:03,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 03:52:03,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 03:52:03,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 03:52:03,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 03:52:03,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 03:52:03,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 03:52:03,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 03:52:03,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 03:52:03,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 03:52:03,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 03:52:03,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 03:52:03,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 03:52:03,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 03:52:03,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 03:52:03,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 03:52:03,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 03:52:03,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 03:52:03,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 03:52:03,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 03:52:03,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 03:52:03,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 03:52:03,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 03:52:03,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 03:52:03,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 03:52:03,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 03:52:03,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 03:52:03,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 03:52:03,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 03:52:03,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 03:52:03,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 03:52:03,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 03:52:03,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 03:52:03,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 03:52:03,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 03:52:03,320 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:52:03,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:52:03,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:52:03,322 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:52:03,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:52:03,322 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:52:03,322 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:52:03,322 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:52:03,324 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:52:03,324 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:52:03,324 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:52:03,324 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:52:03,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:52:03,325 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:52:03,325 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:52:03,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:52:03,326 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:52:03,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:52:03,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:52:03,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:52:03,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:52:03,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:52:03,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:52:03,329 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:52:03,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:52:03,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:52:03,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:52:03,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:52:03,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:52:03,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:52:03,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:52:03,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:52:03,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:52:03,331 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:52:03,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:52:03,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:52:03,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:52:03,335 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:52:03,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:52:03,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:52:03,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:52:03,649 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:52:03,649 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:52:03,650 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2019-11-24 03:52:03,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955d24852/bb84fb7f93f2413bb2ff722c852e0021/FLAG7e0357ab5 [2019-11-24 03:52:04,516 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:52:04,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2019-11-24 03:52:04,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955d24852/bb84fb7f93f2413bb2ff722c852e0021/FLAG7e0357ab5 [2019-11-24 03:52:04,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/955d24852/bb84fb7f93f2413bb2ff722c852e0021 [2019-11-24 03:52:04,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:52:04,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:52:04,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:52:04,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:52:04,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:52:04,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:52:04" (1/1) ... [2019-11-24 03:52:04,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155f1e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:04, skipping insertion in model container [2019-11-24 03:52:04,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:52:04" (1/1) ... [2019-11-24 03:52:04,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:52:04,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:52:06,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:52:06,226 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:52:06,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:52:06,768 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:52:06,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06 WrapperNode [2019-11-24 03:52:06,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:52:06,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:52:06,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:52:06,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:52:06,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:06,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:07,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:52:07,032 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:52:07,032 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:52:07,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:52:07,046 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:07,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:07,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:07,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:07,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:07,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:07,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (1/1) ... [2019-11-24 03:52:07,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:52:07,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:52:07,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:52:07,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:52:07,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (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 03:52:07,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 03:52:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 03:52:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 03:52:07,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 03:52:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 03:52:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 03:52:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 03:52:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 03:52:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-11-24 03:52:07,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 03:52:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 03:52:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 03:52:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 03:52:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 03:52:07,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:52:07,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:53:33,794 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:53:33,795 INFO L284 CfgBuilder]: Removed 922 assume(true) statements. [2019-11-24 03:53:33,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:53:33 BoogieIcfgContainer [2019-11-24 03:53:33,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:53:33,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:53:33,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:53:33,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:53:33,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:52:04" (1/3) ... [2019-11-24 03:53:33,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7150ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:53:33, skipping insertion in model container [2019-11-24 03:53:33,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:52:06" (2/3) ... [2019-11-24 03:53:33,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7150ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:53:33, skipping insertion in model container [2019-11-24 03:53:33,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:53:33" (3/3) ... [2019-11-24 03:53:33,803 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_mm.ko-entry_point.cil.out.i [2019-11-24 03:53:33,812 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:53:33,819 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-24 03:53:33,827 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-24 03:53:33,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:53:33,850 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:53:33,850 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:53:33,851 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:53:33,851 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:53:33,851 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:53:33,851 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:53:33,851 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:53:33,976 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states. [2019-11-24 03:53:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-24 03:53:33,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:53:33,991 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:53:33,991 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 03:53:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:53:34,000 INFO L82 PathProgramCache]: Analyzing trace with hash 868084690, now seen corresponding path program 1 times [2019-11-24 03:53:34,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:53:34,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911397470] [2019-11-24 03:53:34,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:53:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:34,603 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 03:53:34,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911397470] [2019-11-24 03:53:34,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:53:34,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 03:53:34,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457206671] [2019-11-24 03:53:34,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-24 03:53:34,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:53:34,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-24 03:53:34,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-24 03:53:34,633 INFO L87 Difference]: Start difference. First operand 218 states. Second operand 2 states. [2019-11-24 03:53:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:53:34,684 INFO L93 Difference]: Finished difference Result 430 states and 729 transitions. [2019-11-24 03:53:34,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-24 03:53:34,687 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-11-24 03:53:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:53:34,703 INFO L225 Difference]: With dead ends: 430 [2019-11-24 03:53:34,703 INFO L226 Difference]: Without dead ends: 213 [2019-11-24 03:53:34,707 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 03:53:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-11-24 03:53:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2019-11-24 03:53:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2019-11-24 03:53:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 353 transitions. [2019-11-24 03:53:34,781 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 353 transitions. Word has length 35 [2019-11-24 03:53:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:53:34,782 INFO L462 AbstractCegarLoop]: Abstraction has 213 states and 353 transitions. [2019-11-24 03:53:34,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-24 03:53:34,782 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 353 transitions. [2019-11-24 03:53:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-24 03:53:34,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:53:34,784 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:53:34,785 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 03:53:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:53:34,785 INFO L82 PathProgramCache]: Analyzing trace with hash -958217659, now seen corresponding path program 1 times [2019-11-24 03:53:34,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:53:34,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563611576] [2019-11-24 03:53:34,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:53:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:35,021 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 03:53:35,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563611576] [2019-11-24 03:53:35,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:53:35,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:53:35,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376694797] [2019-11-24 03:53:35,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:53:35,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:53:35,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:53:35,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:53:35,027 INFO L87 Difference]: Start difference. First operand 213 states and 353 transitions. Second operand 3 states. [2019-11-24 03:53:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:53:35,164 INFO L93 Difference]: Finished difference Result 432 states and 715 transitions. [2019-11-24 03:53:35,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:53:35,164 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-11-24 03:53:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:53:35,167 INFO L225 Difference]: With dead ends: 432 [2019-11-24 03:53:35,167 INFO L226 Difference]: Without dead ends: 225 [2019-11-24 03:53:35,169 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 03:53:35,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2019-11-24 03:53:35,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2019-11-24 03:53:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2019-11-24 03:53:35,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 372 transitions. [2019-11-24 03:53:35,187 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 372 transitions. Word has length 36 [2019-11-24 03:53:35,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:53:35,188 INFO L462 AbstractCegarLoop]: Abstraction has 225 states and 372 transitions. [2019-11-24 03:53:35,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:53:35,188 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 372 transitions. [2019-11-24 03:53:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-24 03:53:35,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:53:35,191 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:53:35,191 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 03:53:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:53:35,192 INFO L82 PathProgramCache]: Analyzing trace with hash 420102399, now seen corresponding path program 1 times [2019-11-24 03:53:35,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:53:35,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275744481] [2019-11-24 03:53:35,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:53:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:53:35,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275744481] [2019-11-24 03:53:35,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:53:35,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:53:35,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118625006] [2019-11-24 03:53:35,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:53:35,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:53:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:53:35,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:53:35,428 INFO L87 Difference]: Start difference. First operand 225 states and 372 transitions. Second operand 3 states. [2019-11-24 03:53:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:53:35,664 INFO L93 Difference]: Finished difference Result 464 states and 768 transitions. [2019-11-24 03:53:35,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:53:35,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-24 03:53:35,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:53:35,668 INFO L225 Difference]: With dead ends: 464 [2019-11-24 03:53:35,668 INFO L226 Difference]: Without dead ends: 245 [2019-11-24 03:53:35,670 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 03:53:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2019-11-24 03:53:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2019-11-24 03:53:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2019-11-24 03:53:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 404 transitions. [2019-11-24 03:53:35,692 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 404 transitions. Word has length 46 [2019-11-24 03:53:35,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:53:35,693 INFO L462 AbstractCegarLoop]: Abstraction has 245 states and 404 transitions. [2019-11-24 03:53:35,693 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:53:35,693 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 404 transitions. [2019-11-24 03:53:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-24 03:53:35,696 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:53:35,700 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:53:35,700 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 03:53:35,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:53:35,701 INFO L82 PathProgramCache]: Analyzing trace with hash -371081721, now seen corresponding path program 1 times [2019-11-24 03:53:35,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:53:35,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249114459] [2019-11-24 03:53:35,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:53:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-24 03:53:36,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249114459] [2019-11-24 03:53:36,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:53:36,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:53:36,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703288381] [2019-11-24 03:53:36,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:53:36,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:53:36,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:53:36,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:53:36,065 INFO L87 Difference]: Start difference. First operand 245 states and 404 transitions. Second operand 3 states. [2019-11-24 03:53:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:53:36,333 INFO L93 Difference]: Finished difference Result 693 states and 1154 transitions. [2019-11-24 03:53:36,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:53:36,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-11-24 03:53:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:53:36,339 INFO L225 Difference]: With dead ends: 693 [2019-11-24 03:53:36,339 INFO L226 Difference]: Without dead ends: 454 [2019-11-24 03:53:36,341 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 03:53:36,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2019-11-24 03:53:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 251. [2019-11-24 03:53:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2019-11-24 03:53:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 410 transitions. [2019-11-24 03:53:36,382 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 410 transitions. Word has length 54 [2019-11-24 03:53:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:53:36,384 INFO L462 AbstractCegarLoop]: Abstraction has 251 states and 410 transitions. [2019-11-24 03:53:36,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:53:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 410 transitions. [2019-11-24 03:53:36,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-24 03:53:36,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:53:36,388 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:53:36,388 INFO L410 AbstractCegarLoop]: === Iteration 5 === [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 03:53:36,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:53:36,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1048243678, now seen corresponding path program 1 times [2019-11-24 03:53:36,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:53:36,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360412695] [2019-11-24 03:53:36,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:53:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 03:53:36,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360412695] [2019-11-24 03:53:36,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:53:36,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:53:36,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353644912] [2019-11-24 03:53:36,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:53:36,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:53:36,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:53:36,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:53:36,685 INFO L87 Difference]: Start difference. First operand 251 states and 410 transitions. Second operand 3 states. [2019-11-24 03:53:36,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:53:36,820 INFO L93 Difference]: Finished difference Result 705 states and 1166 transitions. [2019-11-24 03:53:36,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:53:36,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-11-24 03:53:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:53:36,824 INFO L225 Difference]: With dead ends: 705 [2019-11-24 03:53:36,824 INFO L226 Difference]: Without dead ends: 460 [2019-11-24 03:53:36,825 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 03:53:36,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-11-24 03:53:36,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 275. [2019-11-24 03:53:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-11-24 03:53:36,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 446 transitions. [2019-11-24 03:53:36,837 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 446 transitions. Word has length 57 [2019-11-24 03:53:36,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:53:36,838 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 446 transitions. [2019-11-24 03:53:36,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:53:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 446 transitions. [2019-11-24 03:53:36,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-24 03:53:36,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:53:36,841 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:53:36,841 INFO L410 AbstractCegarLoop]: === Iteration 6 === [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 03:53:36,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:53:36,841 INFO L82 PathProgramCache]: Analyzing trace with hash 647041393, now seen corresponding path program 1 times [2019-11-24 03:53:36,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:53:36,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082928410] [2019-11-24 03:53:36,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:53:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 03:53:37,278 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082928410] [2019-11-24 03:53:37,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:53:37,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 03:53:37,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047425980] [2019-11-24 03:53:37,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:53:37,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:53:37,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:53:37,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:53:37,282 INFO L87 Difference]: Start difference. First operand 275 states and 446 transitions. Second operand 4 states. [2019-11-24 03:53:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:53:37,502 INFO L93 Difference]: Finished difference Result 678 states and 1101 transitions. [2019-11-24 03:53:37,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 03:53:37,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2019-11-24 03:53:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:53:37,508 INFO L225 Difference]: With dead ends: 678 [2019-11-24 03:53:37,508 INFO L226 Difference]: Without dead ends: 409 [2019-11-24 03:53:37,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:53:37,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2019-11-24 03:53:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 279. [2019-11-24 03:53:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-11-24 03:53:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 450 transitions. [2019-11-24 03:53:37,536 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 450 transitions. Word has length 58 [2019-11-24 03:53:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:53:37,536 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 450 transitions. [2019-11-24 03:53:37,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:53:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 450 transitions. [2019-11-24 03:53:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-24 03:53:37,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:53:37,538 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:53:37,539 INFO L410 AbstractCegarLoop]: === Iteration 7 === [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 03:53:37,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:53:37,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1417921006, now seen corresponding path program 1 times [2019-11-24 03:53:37,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:53:37,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524843787] [2019-11-24 03:53:37,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:53:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 03:53:39,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524843787] [2019-11-24 03:53:39,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:53:39,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:53:39,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311204827] [2019-11-24 03:53:39,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 03:53:39,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:53:39,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 03:53:39,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 03:53:39,155 INFO L87 Difference]: Start difference. First operand 279 states and 450 transitions. Second operand 3 states. [2019-11-24 03:53:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:53:39,195 INFO L93 Difference]: Finished difference Result 556 states and 895 transitions. [2019-11-24 03:53:39,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 03:53:39,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2019-11-24 03:53:39,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:53:39,198 INFO L225 Difference]: With dead ends: 556 [2019-11-24 03:53:39,198 INFO L226 Difference]: Without dead ends: 283 [2019-11-24 03:53:39,199 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 03:53:39,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2019-11-24 03:53:39,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2019-11-24 03:53:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2019-11-24 03:53:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 454 transitions. [2019-11-24 03:53:39,215 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 454 transitions. Word has length 61 [2019-11-24 03:53:39,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:53:39,215 INFO L462 AbstractCegarLoop]: Abstraction has 283 states and 454 transitions. [2019-11-24 03:53:39,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 03:53:39,215 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 454 transitions. [2019-11-24 03:53:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2019-11-24 03:53:39,217 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:53:39,217 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:53:39,218 INFO L410 AbstractCegarLoop]: === Iteration 8 === [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 03:53:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:53:39,218 INFO L82 PathProgramCache]: Analyzing trace with hash -279040169, now seen corresponding path program 1 times [2019-11-24 03:53:39,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:53:39,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459403423] [2019-11-24 03:53:39,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:53:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-24 03:53:39,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459403423] [2019-11-24 03:53:39,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061463241] [2019-11-24 03:53:39,827 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 03:53:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:53:40,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 03:53:40,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:53:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-24 03:53:40,716 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:53:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-24 03:53:40,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1584245242] [2019-11-24 03:53:40,788 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2019-11-24 03:53:40,788 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 03:53:40,795 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 03:53:40,802 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 03:53:40,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs