/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-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 01:16:06,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 01:16:06,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 01:16:06,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 01:16:06,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 01:16:06,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 01:16:06,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 01:16:06,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 01:16:06,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 01:16:06,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 01:16:06,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 01:16:06,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 01:16:06,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 01:16:06,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 01:16:06,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 01:16:06,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 01:16:06,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 01:16:06,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 01:16:06,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 01:16:06,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 01:16:06,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 01:16:06,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 01:16:06,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 01:16:06,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 01:16:06,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 01:16:06,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 01:16:06,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 01:16:06,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 01:16:06,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 01:16:06,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 01:16:06,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 01:16:06,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 01:16:06,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 01:16:06,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 01:16:06,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 01:16:06,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 01:16:06,978 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 01:16:06,995 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 01:16:06,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 01:16:06,996 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 01:16:06,997 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 01:16:06,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 01:16:06,997 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 01:16:06,997 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 01:16:06,997 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 01:16:06,998 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 01:16:06,998 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 01:16:06,998 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 01:16:06,998 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 01:16:06,999 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 01:16:06,999 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 01:16:06,999 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 01:16:07,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 01:16:07,000 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 01:16:07,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 01:16:07,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 01:16:07,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 01:16:07,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 01:16:07,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 01:16:07,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 01:16:07,001 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 01:16:07,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 01:16:07,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 01:16:07,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 01:16:07,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 01:16:07,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 01:16:07,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 01:16:07,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 01:16:07,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 01:16:07,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 01:16:07,003 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 01:16:07,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 01:16:07,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 01:16:07,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 01:16:07,004 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 01:16:07,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 01:16:07,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 01:16:07,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 01:16:07,313 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 01:16:07,314 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 01:16:07,314 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2019-11-24 01:16:07,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5e57de4/e7ed77c984094dd78c57eb60ec6c4aa1/FLAG6b1f10cab [2019-11-24 01:16:08,123 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 01:16:08,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2019-11-24 01:16:08,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5e57de4/e7ed77c984094dd78c57eb60ec6c4aa1/FLAG6b1f10cab [2019-11-24 01:16:08,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f5e57de4/e7ed77c984094dd78c57eb60ec6c4aa1 [2019-11-24 01:16:08,230 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 01:16:08,231 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 01:16:08,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 01:16:08,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 01:16:08,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 01:16:08,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:08" (1/1) ... [2019-11-24 01:16:08,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f25d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:08, skipping insertion in model container [2019-11-24 01:16:08,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:08" (1/1) ... [2019-11-24 01:16:08,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 01:16:08,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 01:16:09,918 WARN L612 FunctionHandler]: implicit declaration of function ldv_malloc [2019-11-24 01:16:09,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:16:10,003 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 01:16:10,366 WARN L612 FunctionHandler]: implicit declaration of function ldv_malloc [2019-11-24 01:16:10,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:16:10,955 INFO L208 MainTranslator]: Completed translation [2019-11-24 01:16:10,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10 WrapperNode [2019-11-24 01:16:10,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 01:16:10,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 01:16:10,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 01:16:10,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 01:16:10,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 01:16:11,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 01:16:11,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 01:16:11,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 01:16:11,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (1/1) ... [2019-11-24 01:16:11,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 01:16:11,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 01:16:11,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 01:16:11,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 01:16:11,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (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 01:16:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 01:16:11,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 01:16:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 01:16:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 01:16:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-24 01:16:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 01:16:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 01:16:11,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 01:16:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 01:16:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 01:16:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 01:16:11,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 01:16:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 01:16:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2019-11-24 01:16:11,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 01:16:11,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 01:16:12,182 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:12,328 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:16,582 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##511: assume false; [2019-11-24 01:16:16,582 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##512: assume !false; [2019-11-24 01:16:16,583 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume !false; [2019-11-24 01:16:16,583 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##40: assume false; [2019-11-24 01:17:10,665 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 01:17:10,665 INFO L284 CfgBuilder]: Removed 635 assume(true) statements. [2019-11-24 01:17:10,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:17:10 BoogieIcfgContainer [2019-11-24 01:17:10,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 01:17:10,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 01:17:10,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 01:17:10,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 01:17:10,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:16:08" (1/3) ... [2019-11-24 01:17:10,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4e7fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:17:10, skipping insertion in model container [2019-11-24 01:17:10,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:10" (2/3) ... [2019-11-24 01:17:10,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4e7fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:17:10, skipping insertion in model container [2019-11-24 01:17:10,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:17:10" (3/3) ... [2019-11-24 01:17:10,674 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2019-11-24 01:17:10,685 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 01:17:10,693 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2019-11-24 01:17:10,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2019-11-24 01:17:10,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 01:17:10,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 01:17:10,730 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 01:17:10,730 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 01:17:10,730 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 01:17:10,731 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 01:17:10,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 01:17:10,731 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 01:17:10,754 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states. [2019-11-24 01:17:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 01:17:10,760 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:17:10,761 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 01:17:10,761 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:17:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:17:10,768 INFO L82 PathProgramCache]: Analyzing trace with hash 86853814, now seen corresponding path program 1 times [2019-11-24 01:17:10,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:17:10,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880264208] [2019-11-24 01:17:10,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:17:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:17:11,264 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 01:17:11,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880264208] [2019-11-24 01:17:11,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:17:11,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:17:11,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065255601] [2019-11-24 01:17:11,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:17:11,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:17:11,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:17:11,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:17:11,290 INFO L87 Difference]: Start difference. First operand 223 states. Second operand 3 states. [2019-11-24 01:17:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:17:12,091 INFO L93 Difference]: Finished difference Result 567 states and 915 transitions. [2019-11-24 01:17:12,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:17:12,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-24 01:17:12,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:17:12,126 INFO L225 Difference]: With dead ends: 567 [2019-11-24 01:17:12,126 INFO L226 Difference]: Without dead ends: 328 [2019-11-24 01:17:12,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:17:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2019-11-24 01:17:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 320. [2019-11-24 01:17:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-24 01:17:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 479 transitions. [2019-11-24 01:17:12,247 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 479 transitions. Word has length 4 [2019-11-24 01:17:12,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:17:12,248 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 479 transitions. [2019-11-24 01:17:12,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:17:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 479 transitions. [2019-11-24 01:17:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 01:17:12,249 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:17:12,249 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 01:17:12,249 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:17:12,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:17:12,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1602498124, now seen corresponding path program 1 times [2019-11-24 01:17:12,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:17:12,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23037321] [2019-11-24 01:17:12,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:17:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:17:12,424 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 01:17:12,425 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23037321] [2019-11-24 01:17:12,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:17:12,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:17:12,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742094600] [2019-11-24 01:17:12,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:17:12,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:17:12,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:17:12,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:17:12,429 INFO L87 Difference]: Start difference. First operand 320 states and 479 transitions. Second operand 3 states. [2019-11-24 01:17:12,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:17:12,443 INFO L93 Difference]: Finished difference Result 320 states and 479 transitions. [2019-11-24 01:17:12,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:17:12,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-24 01:17:12,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:17:12,445 INFO L225 Difference]: With dead ends: 320 [2019-11-24 01:17:12,446 INFO L226 Difference]: Without dead ends: 315 [2019-11-24 01:17:12,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:17:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-11-24 01:17:12,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2019-11-24 01:17:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-11-24 01:17:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 469 transitions. [2019-11-24 01:17:12,468 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 469 transitions. Word has length 5 [2019-11-24 01:17:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:17:12,468 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 469 transitions. [2019-11-24 01:17:12,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:17:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 469 transitions. [2019-11-24 01:17:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-24 01:17:12,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:17:12,470 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] [2019-11-24 01:17:12,470 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:17:12,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:17:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash -274676271, now seen corresponding path program 1 times [2019-11-24 01:17:12,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:17:12,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27946823] [2019-11-24 01:17:12,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:17:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:17:12,615 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 01:17:12,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27946823] [2019-11-24 01:17:12,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:17:12,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:17:12,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750331921] [2019-11-24 01:17:12,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:17:12,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:17:12,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:17:12,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:17:12,618 INFO L87 Difference]: Start difference. First operand 315 states and 469 transitions. Second operand 3 states. [2019-11-24 01:17:12,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:17:12,774 INFO L93 Difference]: Finished difference Result 798 states and 1228 transitions. [2019-11-24 01:17:12,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:17:12,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-24 01:17:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:17:12,778 INFO L225 Difference]: With dead ends: 798 [2019-11-24 01:17:12,778 INFO L226 Difference]: Without dead ends: 484 [2019-11-24 01:17:12,780 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 01:17:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2019-11-24 01:17:12,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 480. [2019-11-24 01:17:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2019-11-24 01:17:12,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 751 transitions. [2019-11-24 01:17:12,808 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 751 transitions. Word has length 21 [2019-11-24 01:17:12,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:17:12,808 INFO L462 AbstractCegarLoop]: Abstraction has 480 states and 751 transitions. [2019-11-24 01:17:12,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:17:12,809 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 751 transitions. [2019-11-24 01:17:12,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-24 01:17:12,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:17:12,810 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] [2019-11-24 01:17:12,811 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:17:12,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:17:12,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1593896125, now seen corresponding path program 1 times [2019-11-24 01:17:12,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:17:12,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031528495] [2019-11-24 01:17:12,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:17:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:17:12,984 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 01:17:12,985 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031528495] [2019-11-24 01:17:12,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:17:12,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 01:17:12,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869358091] [2019-11-24 01:17:12,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 01:17:12,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:17:12,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 01:17:12,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 01:17:12,986 INFO L87 Difference]: Start difference. First operand 480 states and 751 transitions. Second operand 5 states. [2019-11-24 01:17:44,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:17:44,529 INFO L93 Difference]: Finished difference Result 1145 states and 1818 transitions. [2019-11-24 01:17:44,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 01:17:44,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-24 01:17:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:17:44,536 INFO L225 Difference]: With dead ends: 1145 [2019-11-24 01:17:44,536 INFO L226 Difference]: Without dead ends: 854 [2019-11-24 01:17:44,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-24 01:17:44,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2019-11-24 01:17:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 480. [2019-11-24 01:17:44,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2019-11-24 01:17:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 750 transitions. [2019-11-24 01:17:44,568 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 750 transitions. Word has length 23 [2019-11-24 01:17:44,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:17:44,570 INFO L462 AbstractCegarLoop]: Abstraction has 480 states and 750 transitions. [2019-11-24 01:17:44,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 01:17:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 750 transitions. [2019-11-24 01:17:44,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-24 01:17:44,577 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:17:44,577 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] [2019-11-24 01:17:44,577 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:17:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:17:44,578 INFO L82 PathProgramCache]: Analyzing trace with hash -967566384, now seen corresponding path program 1 times [2019-11-24 01:17:44,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:17:44,578 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436763808] [2019-11-24 01:17:44,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:17:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:17:44,950 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 01:17:44,950 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436763808] [2019-11-24 01:17:44,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:17:44,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 01:17:44,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249666780] [2019-11-24 01:17:44,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 01:17:44,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:17:44,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 01:17:44,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 01:17:44,952 INFO L87 Difference]: Start difference. First operand 480 states and 750 transitions. Second operand 5 states.