/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-usb-misc-iowarrior.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 01:16:30,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 01:16:30,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 01:16:30,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 01:16:30,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 01:16:30,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 01:16:30,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 01:16:30,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 01:16:30,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 01:16:30,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 01:16:30,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 01:16:30,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 01:16:30,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 01:16:30,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 01:16:30,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 01:16:30,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 01:16:30,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 01:16:30,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 01:16:30,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 01:16:30,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 01:16:30,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 01:16:30,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 01:16:30,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 01:16:30,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 01:16:30,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 01:16:30,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 01:16:30,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 01:16:30,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 01:16:30,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 01:16:30,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 01:16:30,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 01:16:30,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 01:16:30,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 01:16:30,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 01:16:30,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 01:16:30,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 01:16:30,649 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 01:16:30,665 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 01:16:30,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 01:16:30,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 01:16:30,666 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 01:16:30,666 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 01:16:30,666 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 01:16:30,666 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 01:16:30,667 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 01:16:30,667 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 01:16:30,667 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 01:16:30,667 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 01:16:30,667 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 01:16:30,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 01:16:30,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 01:16:30,668 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 01:16:30,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 01:16:30,669 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 01:16:30,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 01:16:30,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 01:16:30,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 01:16:30,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 01:16:30,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 01:16:30,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 01:16:30,670 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 01:16:30,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 01:16:30,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 01:16:30,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 01:16:30,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 01:16:30,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 01:16:30,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 01:16:30,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 01:16:30,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 01:16:30,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 01:16:30,672 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 01:16:30,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 01:16:30,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 01:16:30,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 01:16:30,673 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 01:16:30,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 01:16:30,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 01:16:30,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 01:16:30,955 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 01:16:30,955 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 01:16:30,956 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2019-11-24 01:16:31,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19f21765/f1522bbc282143df828bb7c7c2ed6dfc/FLAGe87d6e291 [2019-11-24 01:16:31,846 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 01:16:31,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2019-11-24 01:16:31,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19f21765/f1522bbc282143df828bb7c7c2ed6dfc/FLAGe87d6e291 [2019-11-24 01:16:31,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e19f21765/f1522bbc282143df828bb7c7c2ed6dfc [2019-11-24 01:16:31,926 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 01:16:31,930 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 01:16:31,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 01:16:31,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 01:16:31,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 01:16:31,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:31" (1/1) ... [2019-11-24 01:16:31,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6357b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:31, skipping insertion in model container [2019-11-24 01:16:31,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:31" (1/1) ... [2019-11-24 01:16:31,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 01:16:32,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 01:16:33,296 WARN L612 FunctionHandler]: implicit declaration of function ldv_malloc [2019-11-24 01:16:33,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:16:33,385 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 01:16:33,615 WARN L612 FunctionHandler]: implicit declaration of function ldv_malloc [2019-11-24 01:16:33,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:16:33,801 INFO L208 MainTranslator]: Completed translation [2019-11-24 01:16:33,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33 WrapperNode [2019-11-24 01:16:33,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 01:16:33,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 01:16:33,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 01:16:33,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 01:16:33,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:33,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:34,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 01:16:34,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 01:16:34,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 01:16:34,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 01:16:34,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:34,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:34,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:34,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:34,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:34,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:34,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (1/1) ... [2019-11-24 01:16:34,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 01:16:34,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 01:16:34,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 01:16:34,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 01:16:34,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (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 01:16:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 01:16:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 01:16:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 01:16:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 01:16:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-24 01:16:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 01:16:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 01:16:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 01:16:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2019-11-24 01:16:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 01:16:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 01:16:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 01:16:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 01:16:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 01:16:34,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 01:16:34,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 01:16:34,889 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:34,898 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:34,901 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:34,909 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:34,914 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:34,916 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:34,936 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 01:16:38,167 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##249: assume !false; [2019-11-24 01:16:38,167 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##248: assume false; [2019-11-24 01:16:38,168 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##229: assume !false; [2019-11-24 01:16:38,168 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume false; [2019-11-24 01:16:38,168 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##434: assume false; [2019-11-24 01:16:38,168 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##435: assume !false; [2019-11-24 01:16:38,169 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##188: assume !false; [2019-11-24 01:16:38,169 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##187: assume false; [2019-11-24 01:16:38,169 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2019-11-24 01:16:38,169 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2019-11-24 01:16:38,169 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##135: assume !false; [2019-11-24 01:16:38,169 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume false; [2019-11-24 01:16:38,170 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume false; [2019-11-24 01:16:38,170 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !false; [2019-11-24 01:16:49,360 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 01:16:49,360 INFO L284 CfgBuilder]: Removed 487 assume(true) statements. [2019-11-24 01:16:49,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:49 BoogieIcfgContainer [2019-11-24 01:16:49,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 01:16:49,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 01:16:49,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 01:16:49,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 01:16:49,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:16:31" (1/3) ... [2019-11-24 01:16:49,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192022e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:16:49, skipping insertion in model container [2019-11-24 01:16:49,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:33" (2/3) ... [2019-11-24 01:16:49,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192022e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:16:49, skipping insertion in model container [2019-11-24 01:16:49,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:49" (3/3) ... [2019-11-24 01:16:49,378 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2019-11-24 01:16:49,394 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 01:16:49,405 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-11-24 01:16:49,424 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-11-24 01:16:49,472 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 01:16:49,473 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 01:16:49,473 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 01:16:49,473 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 01:16:49,474 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 01:16:49,475 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 01:16:49,475 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 01:16:49,475 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 01:16:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states. [2019-11-24 01:16:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 01:16:49,516 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:49,517 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 01:16:49,518 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:49,526 INFO L82 PathProgramCache]: Analyzing trace with hash 66959274, now seen corresponding path program 1 times [2019-11-24 01:16:49,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:49,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737597971] [2019-11-24 01:16:49,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:50,085 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 01:16:50,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737597971] [2019-11-24 01:16:50,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:50,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:16:50,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449807642] [2019-11-24 01:16:50,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:50,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:50,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:50,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:50,113 INFO L87 Difference]: Start difference. First operand 184 states. Second operand 3 states. [2019-11-24 01:16:50,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:50,273 INFO L93 Difference]: Finished difference Result 489 states and 826 transitions. [2019-11-24 01:16:50,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:50,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-24 01:16:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:50,309 INFO L225 Difference]: With dead ends: 489 [2019-11-24 01:16:50,309 INFO L226 Difference]: Without dead ends: 297 [2019-11-24 01:16:50,315 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 01:16:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-11-24 01:16:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 289. [2019-11-24 01:16:50,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2019-11-24 01:16:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 459 transitions. [2019-11-24 01:16:50,405 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 459 transitions. Word has length 4 [2019-11-24 01:16:50,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:50,406 INFO L462 AbstractCegarLoop]: Abstraction has 289 states and 459 transitions. [2019-11-24 01:16:50,406 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:50,406 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 459 transitions. [2019-11-24 01:16:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-24 01:16:50,407 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:50,407 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-24 01:16:50,408 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:50,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:50,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2075737894, now seen corresponding path program 1 times [2019-11-24 01:16:50,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:50,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996696547] [2019-11-24 01:16:50,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:50,568 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 01:16:50,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996696547] [2019-11-24 01:16:50,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:50,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 01:16:50,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089944331] [2019-11-24 01:16:50,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:50,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:50,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:50,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:50,573 INFO L87 Difference]: Start difference. First operand 289 states and 459 transitions. Second operand 3 states. [2019-11-24 01:16:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:50,622 INFO L93 Difference]: Finished difference Result 436 states and 692 transitions. [2019-11-24 01:16:50,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:50,622 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-24 01:16:50,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:50,625 INFO L225 Difference]: With dead ends: 436 [2019-11-24 01:16:50,625 INFO L226 Difference]: Without dead ends: 431 [2019-11-24 01:16:50,627 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 01:16:50,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-11-24 01:16:50,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 423. [2019-11-24 01:16:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-11-24 01:16:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 679 transitions. [2019-11-24 01:16:50,736 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 679 transitions. Word has length 5 [2019-11-24 01:16:50,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:50,736 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 679 transitions. [2019-11-24 01:16:50,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:50,736 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 679 transitions. [2019-11-24 01:16:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 01:16:50,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:50,738 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:50,738 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:50,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:50,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1846835696, now seen corresponding path program 1 times [2019-11-24 01:16:50,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:50,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652706832] [2019-11-24 01:16:50,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:50,894 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 01:16:50,894 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652706832] [2019-11-24 01:16:50,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:50,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:16:50,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144580518] [2019-11-24 01:16:50,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:50,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:50,898 INFO L87 Difference]: Start difference. First operand 423 states and 679 transitions. Second operand 3 states. [2019-11-24 01:16:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:51,318 INFO L93 Difference]: Finished difference Result 1042 states and 1683 transitions. [2019-11-24 01:16:51,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:51,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-24 01:16:51,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:51,323 INFO L225 Difference]: With dead ends: 1042 [2019-11-24 01:16:51,323 INFO L226 Difference]: Without dead ends: 621 [2019-11-24 01:16:51,326 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 01:16:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2019-11-24 01:16:51,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 607. [2019-11-24 01:16:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-11-24 01:16:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 980 transitions. [2019-11-24 01:16:51,355 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 980 transitions. Word has length 18 [2019-11-24 01:16:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:51,356 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 980 transitions. [2019-11-24 01:16:51,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 980 transitions. [2019-11-24 01:16:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-24 01:16:51,358 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:51,358 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 01:16:51,358 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:51,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:51,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1757298860, now seen corresponding path program 1 times [2019-11-24 01:16:51,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:51,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342770448] [2019-11-24 01:16:51,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:51,471 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 01:16:51,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342770448] [2019-11-24 01:16:51,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:16:51,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:16:51,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070682084] [2019-11-24 01:16:51,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:16:51,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:16:51,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:16:51,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:16:51,473 INFO L87 Difference]: Start difference. First operand 607 states and 980 transitions. Second operand 3 states. [2019-11-24 01:16:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:16:51,876 INFO L93 Difference]: Finished difference Result 1678 states and 2733 transitions. [2019-11-24 01:16:51,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:16:51,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-24 01:16:51,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:16:51,883 INFO L225 Difference]: With dead ends: 1678 [2019-11-24 01:16:51,883 INFO L226 Difference]: Without dead ends: 1071 [2019-11-24 01:16:51,886 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 01:16:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2019-11-24 01:16:51,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1053. [2019-11-24 01:16:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2019-11-24 01:16:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1724 transitions. [2019-11-24 01:16:51,931 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1724 transitions. Word has length 21 [2019-11-24 01:16:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:16:51,931 INFO L462 AbstractCegarLoop]: Abstraction has 1053 states and 1724 transitions. [2019-11-24 01:16:51,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:16:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1724 transitions. [2019-11-24 01:16:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-24 01:16:51,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:16:51,934 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:16:51,934 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:16:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:16:51,935 INFO L82 PathProgramCache]: Analyzing trace with hash -876023537, now seen corresponding path program 1 times [2019-11-24 01:16:51,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:16:51,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273275428] [2019-11-24 01:16:51,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:16:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:52,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:16:52,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273275428] [2019-11-24 01:16:52,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564825911] [2019-11-24 01:16:52,125 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 01:16:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:16:52,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 1248 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 01:16:52,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:16:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:16:52,687 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:16:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:16:52,718 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1985915533] [2019-11-24 01:16:52,826 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2019-11-24 01:16:52,827 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 01:16:52,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 01:16:52,843 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 01:16:52,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 01:16:55,728 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 1898