./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c59d24ca7e400c1a8a00858a94bd019ea47bce8fc36becb9b508e062f91a0ddc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:10:43,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:10:43,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:10:43,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:10:43,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:10:43,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:10:43,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:10:43,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:10:43,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:10:43,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:10:43,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:10:43,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:10:43,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:10:43,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:10:43,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:10:43,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:10:43,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:10:43,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:10:43,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:10:43,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:10:43,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:10:43,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:10:43,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:10:43,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:10:43,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:10:43,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:10:43,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:10:43,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:10:43,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:10:43,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:10:43,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:10:43,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:10:43,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:10:43,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:10:43,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:10:43,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:10:43,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:10:43,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:10:43,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:10:43,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:10:43,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:10:43,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:10:43,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:10:43,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:10:43,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:10:43,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:10:43,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:10:43,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:10:43,985 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:10:43,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:10:43,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:10:43,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:10:43,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:10:43,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:10:43,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:10:43,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:10:43,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:10:43,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:10:43,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:10:43,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:10:43,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:10:43,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:10:43,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:10:43,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:10:43,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:10:43,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:10:43,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:10:43,988 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:10:43,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:10:43,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:10:43,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:10:43,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c59d24ca7e400c1a8a00858a94bd019ea47bce8fc36becb9b508e062f91a0ddc [2021-11-06 15:10:44,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:10:44,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:10:44,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:10:44,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:10:44,168 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:10:44,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2021-11-06 15:10:44,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e30bcd54/eed01fffc1e54950b6359ac31260a9a3/FLAG5fb7c65fa [2021-11-06 15:10:44,897 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:10:44,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2021-11-06 15:10:44,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e30bcd54/eed01fffc1e54950b6359ac31260a9a3/FLAG5fb7c65fa [2021-11-06 15:10:45,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e30bcd54/eed01fffc1e54950b6359ac31260a9a3 [2021-11-06 15:10:45,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:10:45,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:10:45,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:10:45,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:10:45,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:10:45,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:10:45" (1/1) ... [2021-11-06 15:10:45,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216095c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:45, skipping insertion in model container [2021-11-06 15:10:45,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:10:45" (1/1) ... [2021-11-06 15:10:45,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:10:45,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:10:45,744 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4050] [2021-11-06 15:10:45,744 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4051-4052] [2021-11-06 15:10:46,101 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i[126730,126743] [2021-11-06 15:10:47,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:10:47,539 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:10:47,624 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [4050] [2021-11-06 15:10:47,625 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [4051-4052] [2021-11-06 15:10:47,633 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i[126730,126743] [2021-11-06 15:10:47,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:10:47,953 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:10:47,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47 WrapperNode [2021-11-06 15:10:47,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:10:47,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:10:47,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:10:47,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:10:47,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:48,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:49,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:10:49,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:10:49,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:10:49,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:10:49,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:49,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:49,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:49,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:50,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:50,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:50,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:50,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:10:50,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:10:50,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:10:50,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:10:50,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (1/1) ... [2021-11-06 15:10:50,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:10:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:10:50,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 15:10:50,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 15:10:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_tx_chars [2021-11-06 15:10:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_tx_chars [2021-11-06 15:10:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_rx_chars [2021-11-06 15:10:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_rx_chars [2021-11-06 15:10:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_do_pm [2021-11-06 15:10:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_do_pm [2021-11-06 15:10:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure serial_dl_write [2021-11-06 15:10:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_dl_write [2021-11-06 15:10:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_start_tx [2021-11-06 15:10:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_start_tx [2021-11-06 15:10:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig_16550a [2021-11-06 15:10:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig_16550a [2021-11-06 15:10:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure __dma_tx_complete [2021-11-06 15:10:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __dma_tx_complete [2021-11-06 15:10:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 15:10:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-06 15:10:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure serial_in [2021-11-06 15:10:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_in [2021-11-06 15:10:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_handle_irq [2021-11-06 15:10:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_handle_irq [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure broken_efr [2021-11-06 15:10:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure broken_efr [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_modem_status [2021-11-06 15:10:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_modem_status [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 15:10:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_tx_dma [2021-11-06 15:10:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_tx_dma [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:10:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:10:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure disable_rsa [2021-11-06 15:10:50,902 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_rsa [2021-11-06 15:10:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure serial_out [2021-11-06 15:10:50,902 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_out [2021-11-06 15:10:50,902 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_set_termios [2021-11-06 15:10:50,903 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_set_termios [2021-11-06 15:10:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-06 15:10:50,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-06 15:10:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:10:50,903 INFO L130 BoogieDeclarations]: Found specification of procedure serial_port_in [2021-11-06 15:10:50,904 INFO L138 BoogieDeclarations]: Found implementation of procedure serial_port_in [2021-11-06 15:10:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:10:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:10:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_pm [2021-11-06 15:10:50,904 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_pm [2021-11-06 15:10:50,904 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig [2021-11-06 15:10:50,905 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig [2021-11-06 15:10:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:10:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:10:50,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 15:10:50,905 INFO L130 BoogieDeclarations]: Found specification of procedure uart_handle_break [2021-11-06 15:10:50,906 INFO L138 BoogieDeclarations]: Found implementation of procedure uart_handle_break [2021-11-06 15:10:50,906 INFO L130 BoogieDeclarations]: Found specification of procedure dma_async_issue_pending [2021-11-06 15:10:50,906 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_async_issue_pending [2021-11-06 15:10:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_config_port [2021-11-06 15:10:50,907 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_config_port [2021-11-06 15:10:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_shutdown [2021-11-06 15:10:50,907 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_shutdown [2021-11-06 15:10:50,907 INFO L130 BoogieDeclarations]: Found specification of procedure autoconfig_has_efr [2021-11-06 15:10:50,908 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconfig_has_efr [2021-11-06 15:10:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_rx_dma [2021-11-06 15:10:50,908 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_rx_dma [2021-11-06 15:10:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure size_fifo [2021-11-06 15:10:50,908 INFO L138 BoogieDeclarations]: Found implementation of procedure size_fifo [2021-11-06 15:10:50,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:10:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure serial8250_set_sleep [2021-11-06 15:10:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure serial8250_set_sleep [2021-11-06 15:10:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:10:50,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:10:50,909 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~VOID [2021-11-06 15:10:50,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~VOID [2021-11-06 15:13:10,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:13:10,340 INFO L299 CfgBuilder]: Removed 7609 assume(true) statements. [2021-11-06 15:13:10,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:13:10 BoogieIcfgContainer [2021-11-06 15:13:10,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:13:10,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:13:10,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:13:10,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:13:10,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:10:45" (1/3) ... [2021-11-06 15:13:10,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f1d3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:13:10, skipping insertion in model container [2021-11-06 15:13:10,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:10:47" (2/3) ... [2021-11-06 15:13:10,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f1d3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:13:10, skipping insertion in model container [2021-11-06 15:13:10,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:13:10" (3/3) ... [2021-11-06 15:13:10,358 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--tty--serial--8250--8250.ko-entry_point.cil.out.i [2021-11-06 15:13:10,364 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:13:10,365 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-06 15:13:10,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:13:10,435 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 15:13:10,435 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-06 15:13:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 10227 states, 9132 states have (on average 1.396298729741568) internal successors, (12751), 9192 states have internal predecessors, (12751), 1053 states have call successors, (1053), 31 states have call predecessors, (1053), 31 states have return successors, (1053), 1044 states have call predecessors, (1053), 1053 states have call successors, (1053) [2021-11-06 15:13:10,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-06 15:13:10,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:13:10,622 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:13:10,622 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:13:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:13:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1538672586, now seen corresponding path program 1 times [2021-11-06 15:13:10,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:13:10,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018258329] [2021-11-06 15:13:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:13:10,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:13:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-06 15:13:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:13:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 15:13:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-06 15:13:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:13:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 15:13:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-06 15:13:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:13:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 15:13:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-06 15:13:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:13:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 15:13:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:13:11,682 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-06 15:13:11,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:13:11,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018258329] [2021-11-06 15:13:11,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018258329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:13:11,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:13:11,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:13:11,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917065958] [2021-11-06 15:13:11,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:13:11,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:13:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:13:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:13:11,716 INFO L87 Difference]: Start difference. First operand has 10227 states, 9132 states have (on average 1.396298729741568) internal successors, (12751), 9192 states have internal predecessors, (12751), 1053 states have call successors, (1053), 31 states have call predecessors, (1053), 31 states have return successors, (1053), 1044 states have call predecessors, (1053), 1053 states have call successors, (1053) Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 15:16:42,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:16:42,791 INFO L93 Difference]: Finished difference Result 26614 states and 39263 transitions. [2021-11-06 15:16:42,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:16:42,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 139 [2021-11-06 15:16:42,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:16:42,885 INFO L225 Difference]: With dead ends: 26614 [2021-11-06 15:16:42,885 INFO L226 Difference]: Without dead ends: 16262 [2021-11-06 15:16:42,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:16:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16262 states. [2021-11-06 15:16:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16262 to 15711. [2021-11-06 15:16:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15711 states, 14131 states have (on average 1.3763357158021372) internal successors, (19449), 14217 states have internal predecessors, (19449), 1518 states have call successors, (1518), 52 states have call predecessors, (1518), 52 states have return successors, (1518), 1504 states have call predecessors, (1518), 1518 states have call successors, (1518) [2021-11-06 15:16:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15711 states to 15711 states and 22485 transitions. [2021-11-06 15:16:43,909 INFO L78 Accepts]: Start accepts. Automaton has 15711 states and 22485 transitions. Word has length 139 [2021-11-06 15:16:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:16:43,909 INFO L470 AbstractCegarLoop]: Abstraction has 15711 states and 22485 transitions. [2021-11-06 15:16:43,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 15:16:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 15711 states and 22485 transitions. [2021-11-06 15:16:43,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-06 15:16:43,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:16:43,950 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:16:43,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:16:43,953 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:16:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:16:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1382177980, now seen corresponding path program 1 times [2021-11-06 15:16:43,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:16:43,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833577245] [2021-11-06 15:16:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:16:43,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:16:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-06 15:16:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:16:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 15:16:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-06 15:16:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:16:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 15:16:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-06 15:16:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:16:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 15:16:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-06 15:16:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:16:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-06 15:16:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:16:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-06 15:16:44,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:16:44,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833577245] [2021-11-06 15:16:44,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833577245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:16:44,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:16:44,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:16:44,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018183562] [2021-11-06 15:16:44,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 15:16:44,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:16:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 15:16:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 15:16:44,986 INFO L87 Difference]: Start difference. First operand 15711 states and 22485 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 15:18:00,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:18:00,164 INFO L93 Difference]: Finished difference Result 34139 states and 52739 transitions. [2021-11-06 15:18:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:18:00,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 142 [2021-11-06 15:18:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:18:00,317 INFO L225 Difference]: With dead ends: 34139 [2021-11-06 15:18:00,317 INFO L226 Difference]: Without dead ends: 34119 [2021-11-06 15:18:00,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:18:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34119 states. [2021-11-06 15:18:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34119 to 32264. [2021-11-06 15:18:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32264 states, 28722 states have (on average 1.3792563191978275) internal successors, (39615), 28921 states have internal predecessors, (39615), 3371 states have call successors, (3371), 100 states have call predecessors, (3371), 161 states have return successors, (5650), 3378 states have call predecessors, (5650), 3371 states have call successors, (5650) [2021-11-06 15:18:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32264 states to 32264 states and 48636 transitions. [2021-11-06 15:18:01,953 INFO L78 Accepts]: Start accepts. Automaton has 32264 states and 48636 transitions. Word has length 142 [2021-11-06 15:18:01,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:18:01,954 INFO L470 AbstractCegarLoop]: Abstraction has 32264 states and 48636 transitions. [2021-11-06 15:18:01,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-06 15:18:01,954 INFO L276 IsEmpty]: Start isEmpty. Operand 32264 states and 48636 transitions. [2021-11-06 15:18:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 15:18:02,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:18:02,002 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:18:02,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:18:02,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:18:02,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:18:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash 454728812, now seen corresponding path program 1 times [2021-11-06 15:18:02,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:18:02,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550033808] [2021-11-06 15:18:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:18:02,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:18:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-06 15:18:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:18:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-06 15:18:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:18:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-06 15:18:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:18:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-06 15:18:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:18:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-06 15:18:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-06 15:18:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:18:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:18:02,918 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-06 15:18:02,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:18:02,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550033808] [2021-11-06 15:18:02,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550033808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:18:02,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:18:02,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:18:02,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237656936] [2021-11-06 15:18:02,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:18:02,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:18:02,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:18:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:18:02,922 INFO L87 Difference]: Start difference. First operand 32264 states and 48636 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-06 15:20:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:20:32,079 INFO L93 Difference]: Finished difference Result 65537 states and 100209 transitions. [2021-11-06 15:20:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:20:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 163 [2021-11-06 15:20:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:20:32,194 INFO L225 Difference]: With dead ends: 65537 [2021-11-06 15:20:32,194 INFO L226 Difference]: Without dead ends: 33292 [2021-11-06 15:20:32,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:20:32,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33292 states. [2021-11-06 15:20:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33292 to 32269. [2021-11-06 15:20:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32269 states, 28727 states have (on average 1.379190308768754) internal successors, (39620), 28926 states have internal predecessors, (39620), 3371 states have call successors, (3371), 100 states have call predecessors, (3371), 161 states have return successors, (5650), 3378 states have call predecessors, (5650), 3371 states have call successors, (5650) [2021-11-06 15:20:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32269 states to 32269 states and 48641 transitions. [2021-11-06 15:20:34,254 INFO L78 Accepts]: Start accepts. Automaton has 32269 states and 48641 transitions. Word has length 163 [2021-11-06 15:20:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:20:34,256 INFO L470 AbstractCegarLoop]: Abstraction has 32269 states and 48641 transitions. [2021-11-06 15:20:34,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-06 15:20:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 32269 states and 48641 transitions. [2021-11-06 15:20:34,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-06 15:20:34,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:20:34,299 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:20:34,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:20:34,299 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [size_fifoErr0ASSERT_VIOLATIONERROR_FUNCTION, autoconfig_16550aErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-06 15:20:34,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:20:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash -805743088, now seen corresponding path program 1 times [2021-11-06 15:20:34,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:20:34,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077876777] [2021-11-06 15:20:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:20:34,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:20:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-06 15:20:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:20:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-06 15:20:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:20:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-06 15:20:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:20:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-06 15:20:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:20:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-06 15:20:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-06 15:20:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-06 15:20:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-06 15:20:35,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:20:35,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077876777] [2021-11-06 15:20:35,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077876777] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:20:35,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447469018] [2021-11-06 15:20:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:20:35,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:20:35,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:20:35,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:20:35,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:20:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:20:37,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 7485 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 15:20:37,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:20:38,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-11-06 15:20:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-06 15:20:38,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447469018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:20:38,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:20:38,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-06 15:20:38,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271085877] [2021-11-06 15:20:38,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:20:38,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:20:38,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:20:38,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:20:38,324 INFO L87 Difference]: Start difference. First operand 32269 states and 48641 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Killed by 15