/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/SifaCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 12:06:09,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 12:06:09,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 12:06:09,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 12:06:09,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 12:06:09,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 12:06:09,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 12:06:09,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 12:06:09,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 12:06:09,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 12:06:09,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 12:06:09,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 12:06:09,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 12:06:09,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 12:06:09,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 12:06:09,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 12:06:09,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 12:06:09,192 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 12:06:09,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 12:06:09,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 12:06:09,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 12:06:09,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 12:06:09,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 12:06:09,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 12:06:09,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 12:06:09,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 12:06:09,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 12:06:09,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 12:06:09,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 12:06:09,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 12:06:09,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 12:06:09,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 12:06:09,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 12:06:09,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 12:06:09,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 12:06:09,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 12:06:09,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 12:06:09,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 12:06:09,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 12:06:09,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 12:06:09,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 12:06:09,225 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 12:06:09,258 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 12:06:09,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 12:06:09,262 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 12:06:09,263 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 12:06:09,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 12:06:09,263 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 12:06:09,263 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 12:06:09,264 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 12:06:09,264 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 12:06:09,264 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 12:06:09,264 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 12:06:09,264 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 12:06:09,265 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 12:06:09,266 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 12:06:09,266 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 12:06:09,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 12:06:09,267 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 12:06:09,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 12:06:09,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 12:06:09,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 12:06:09,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 12:06:09,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 12:06:09,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 12:06:09,269 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 12:06:09,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 12:06:09,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 12:06:09,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 12:06:09,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 12:06:09,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 12:06:09,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 12:06:09,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 12:06:09,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 12:06:09,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 12:06:09,271 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 12:06:09,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 12:06:09,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 12:06:09,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 12:06:09,273 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 12:06:09,578 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 12:06:09,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 12:06:09,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 12:06:09,596 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 12:06:09,597 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 12:06:09,598 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2019-11-24 12:06:09,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5154a86d0/96fb42b38ae14684ac0340b54a00e8f4/FLAG13bada535 [2019-11-24 12:06:10,525 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 12:06:10,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2019-11-24 12:06:10,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5154a86d0/96fb42b38ae14684ac0340b54a00e8f4/FLAG13bada535 [2019-11-24 12:06:10,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5154a86d0/96fb42b38ae14684ac0340b54a00e8f4 [2019-11-24 12:06:10,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 12:06:10,987 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 12:06:10,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 12:06:10,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 12:06:10,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 12:06:10,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:06:10" (1/1) ... [2019-11-24 12:06:10,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e54d529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:10, skipping insertion in model container [2019-11-24 12:06:10,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:06:10" (1/1) ... [2019-11-24 12:06:11,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 12:06:11,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 12:06:13,095 WARN L612 FunctionHandler]: implicit declaration of function ldv_malloc [2019-11-24 12:06:13,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 12:06:13,183 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 12:06:13,614 WARN L612 FunctionHandler]: implicit declaration of function ldv_malloc [2019-11-24 12:06:13,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 12:06:13,793 INFO L208 MainTranslator]: Completed translation [2019-11-24 12:06:13,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13 WrapperNode [2019-11-24 12:06:13,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 12:06:13,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 12:06:13,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 12:06:13,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 12:06:13,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:13,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:14,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 12:06:14,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 12:06:14,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 12:06:14,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 12:06:14,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:14,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:14,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:14,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:14,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:14,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:14,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (1/1) ... [2019-11-24 12:06:14,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 12:06:14,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 12:06:14,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 12:06:14,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 12:06:14,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:06:13" (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 12:06:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 12:06:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 12:06:14,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 12:06:14,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 12:06:14,770 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2019-11-24 12:06:14,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2019-11-24 12:06:14,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-24 12:06:14,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 12:06:14,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 12:06:14,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 12:06:14,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-24 12:06:14,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-24 12:06:14,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 12:06:14,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 12:06:14,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 12:06:14,772 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2019-11-24 12:06:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2019-11-24 12:06:14,772 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2019-11-24 12:06:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2019-11-24 12:06:14,772 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2019-11-24 12:06:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2019-11-24 12:06:14,772 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2019-11-24 12:06:14,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2019-11-24 12:06:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 12:06:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 12:06:14,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 12:06:14,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 12:06:15,956 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 12:06:22,082 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##607: assume !false; [2019-11-24 12:06:22,082 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##606: assume false; [2019-11-24 12:06:22,084 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 12:06:22,302 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2019-11-24 12:06:22,303 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2019-11-24 12:06:22,308 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 12:06:22,309 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 12:06:30,330 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##229: assume !false; [2019-11-24 12:06:30,331 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume false; [2019-11-24 12:06:30,331 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint L8642: ttusb_dec_start_feed_#res := 0; [2019-11-24 12:06:30,331 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##189: assume false; [2019-11-24 12:06:30,331 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##190: assume !false; [2019-11-24 12:06:30,334 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 12:06:35,001 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2019-11-24 12:06:35,002 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false;