./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.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 8ce45e17f6cb4c017891df1db140fbcb2581e20f4065ad4296f4e21077bc6fbb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:33:51,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:33:51,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:33:51,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:33:51,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:33:51,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:33:51,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:33:51,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:33:51,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:33:51,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:33:51,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:33:51,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:33:51,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:33:51,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:33:51,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:33:51,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:33:51,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:33:51,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:33:51,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:33:51,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:33:51,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:33:51,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:33:51,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:33:51,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:33:51,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:33:51,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:33:51,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:33:51,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:33:51,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:33:51,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:33:52,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:33:52,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:33:52,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:33:52,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:33:52,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:33:52,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:33:52,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:33:52,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:33:52,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:33:52,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:33:52,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:33:52,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:33:52,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:33:52,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:33:52,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:33:52,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:33:52,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:33:52,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:33:52,041 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:33:52,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:33:52,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:33:52,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:33:52,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:33:52,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:33:52,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:33:52,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:33:52,043 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:33:52,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:33:52,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:33:52,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:33:52,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:33:52,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:33:52,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:33:52,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:33:52,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:33:52,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:33:52,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:33:52,045 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:33:52,045 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:33:52,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:33:52,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:33:52,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ce45e17f6cb4c017891df1db140fbcb2581e20f4065ad4296f4e21077bc6fbb [2021-11-06 20:33:52,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:33:52,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:33:52,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:33:52,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:33:52,283 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:33:52,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i [2021-11-06 20:33:52,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c83d6712/1d8fdb336dba42e0a3a154c887e469af/FLAG311cab921 [2021-11-06 20:33:52,995 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:33:52,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i [2021-11-06 20:33:53,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c83d6712/1d8fdb336dba42e0a3a154c887e469af/FLAG311cab921 [2021-11-06 20:33:53,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c83d6712/1d8fdb336dba42e0a3a154c887e469af [2021-11-06 20:33:53,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:33:53,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:33:53,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:33:53,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:33:53,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:33:53,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:33:53" (1/1) ... [2021-11-06 20:33:53,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13bba8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:53, skipping insertion in model container [2021-11-06 20:33:53,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:33:53" (1/1) ... [2021-11-06 20:33:53,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:33:53,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:33:55,600 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389426,389439] [2021-11-06 20:33:55,603 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389592,389605] [2021-11-06 20:33:55,603 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389756,389769] [2021-11-06 20:33:55,607 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389921,389934] [2021-11-06 20:33:55,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:33:55,693 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:33:55,996 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389426,389439] [2021-11-06 20:33:55,997 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389592,389605] [2021-11-06 20:33:55,997 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389756,389769] [2021-11-06 20:33:55,998 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-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389921,389934] [2021-11-06 20:33:56,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:33:56,379 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:33:56,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56 WrapperNode [2021-11-06 20:33:56,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:33:56,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:33:56,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:33:56,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:33:56,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:33:56,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:33:57,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:33:57,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:33:57,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:33:57,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:33:57,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:33:57,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:33:58,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:33:58,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:33:59,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:33:59,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:33:59,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:34:00,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:34:00,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:34:00,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:34:00,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:34:00,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (1/1) ... [2021-11-06 20:34:00,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:34:00,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:34:00,089 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 20:34:00,144 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 20:34:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:34:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:34:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:34:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:34:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:34:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:34:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:34:00,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:34:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:34:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:34:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:34:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:34:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:34:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:34:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:36:29,114 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#6: ldv_switch_1_#res := 0; [2021-11-06 20:36:29,114 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#7: ldv_switch_1_#res := 0; [2021-11-06 20:36:29,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-06 20:36:29,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#5: ldv_switch_1_#res := 0; [2021-11-06 20:36:29,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 20:36:29,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 20:36:29,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:36:29,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-06 20:36:29,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-06 20:36:29,115 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:36:29,116 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#8: ldv_switch_1_#res := 0; [2021-11-06 20:36:29,117 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 20:36:29,118 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:36:29,119 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:36:29,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:36:29,155 INFO L299 CfgBuilder]: Removed 11943 assume(true) statements. [2021-11-06 20:36:29,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:36:29 BoogieIcfgContainer [2021-11-06 20:36:29,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:36:29,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:36:29,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:36:29,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:36:29,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:33:53" (1/3) ... [2021-11-06 20:36:29,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3519125c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:36:29, skipping insertion in model container [2021-11-06 20:36:29,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:33:56" (2/3) ... [2021-11-06 20:36:29,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3519125c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:36:29, skipping insertion in model container [2021-11-06 20:36:29,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:36:29" (3/3) ... [2021-11-06 20:36:29,169 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i [2021-11-06 20:36:29,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:36:29,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 336 error locations. [2021-11-06 20:36:29,239 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:36:29,243 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 20:36:29,243 INFO L340 AbstractCegarLoop]: Starting to check reachability of 336 error locations. [2021-11-06 20:36:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 11315 states, 10979 states have (on average 1.3217961562983878) internal successors, (14512), 11314 states have internal predecessors, (14512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-06 20:36:29,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:36:29,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:29,487 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 333 more)] === [2021-11-06 20:36:29,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:36:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1439247217, now seen corresponding path program 1 times [2021-11-06 20:36:29,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:36:29,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291281837] [2021-11-06 20:36:29,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:36:29,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:36:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:36:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:36:30,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:36:30,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291281837] [2021-11-06 20:36:30,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291281837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:36:30,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:36:30,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:36:30,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693493041] [2021-11-06 20:36:30,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:36:30,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:36:30,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:36:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:36:30,411 INFO L87 Difference]: Start difference. First operand has 11315 states, 10979 states have (on average 1.3217961562983878) internal successors, (14512), 11314 states have internal predecessors, (14512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:36:33,383 INFO L93 Difference]: Finished difference Result 32990 states and 42305 transitions. [2021-11-06 20:36:33,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:36:33,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-06 20:36:33,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:36:33,476 INFO L225 Difference]: With dead ends: 32990 [2021-11-06 20:36:33,477 INFO L226 Difference]: Without dead ends: 21659 [2021-11-06 20:36:33,510 INFO L786 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 [2021-11-06 20:36:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21659 states. [2021-11-06 20:36:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21659 to 21011. [2021-11-06 20:36:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21011 states, 20675 states have (on average 1.2808222490931076) internal successors, (26481), 21010 states have internal predecessors, (26481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21011 states to 21011 states and 26481 transitions. [2021-11-06 20:36:34,302 INFO L78 Accepts]: Start accepts. Automaton has 21011 states and 26481 transitions. Word has length 132 [2021-11-06 20:36:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:36:34,305 INFO L470 AbstractCegarLoop]: Abstraction has 21011 states and 26481 transitions. [2021-11-06 20:36:34,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21011 states and 26481 transitions. [2021-11-06 20:36:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-06 20:36:34,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:36:34,317 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:34,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:36:34,318 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr100ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 333 more)] === [2021-11-06 20:36:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:36:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -352613274, now seen corresponding path program 1 times [2021-11-06 20:36:34,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:36:34,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930312372] [2021-11-06 20:36:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:36:34,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:36:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:36:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:36:35,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:36:35,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930312372] [2021-11-06 20:36:35,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930312372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:36:35,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:36:35,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 20:36:35,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672291305] [2021-11-06 20:36:35,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 20:36:35,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:36:35,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 20:36:35,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-06 20:36:35,168 INFO L87 Difference]: Start difference. First operand 21011 states and 26481 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:36:40,029 INFO L93 Difference]: Finished difference Result 56837 states and 71391 transitions. [2021-11-06 20:36:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 20:36:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-06 20:36:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:36:40,147 INFO L225 Difference]: With dead ends: 56837 [2021-11-06 20:36:40,148 INFO L226 Difference]: Without dead ends: 36134 [2021-11-06 20:36:40,198 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-06 20:36:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36134 states. [2021-11-06 20:36:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36134 to 35032. [2021-11-06 20:36:41,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35032 states, 34696 states have (on average 1.2859983859810928) internal successors, (44619), 35031 states have internal predecessors, (44619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35032 states to 35032 states and 44619 transitions. [2021-11-06 20:36:41,078 INFO L78 Accepts]: Start accepts. Automaton has 35032 states and 44619 transitions. Word has length 157 [2021-11-06 20:36:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:36:41,085 INFO L470 AbstractCegarLoop]: Abstraction has 35032 states and 44619 transitions. [2021-11-06 20:36:41,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 6 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 35032 states and 44619 transitions. [2021-11-06 20:36:41,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-06 20:36:41,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:36:41,093 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:41,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:36:41,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 333 more)] === [2021-11-06 20:36:41,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:36:41,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1756230262, now seen corresponding path program 1 times [2021-11-06 20:36:41,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:36:41,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247635212] [2021-11-06 20:36:41,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:36:41,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:36:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:36:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:36:41,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:36:41,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247635212] [2021-11-06 20:36:41,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247635212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:36:41,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:36:41,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:36:41,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031191366] [2021-11-06 20:36:41,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:36:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:36:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:36:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:36:41,671 INFO L87 Difference]: Start difference. First operand 35032 states and 44619 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:45,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:36:45,267 INFO L93 Difference]: Finished difference Result 90475 states and 115238 transitions. [2021-11-06 20:36:45,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:36:45,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-06 20:36:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:36:45,400 INFO L225 Difference]: With dead ends: 90475 [2021-11-06 20:36:45,400 INFO L226 Difference]: Without dead ends: 55751 [2021-11-06 20:36:45,457 INFO L786 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 [2021-11-06 20:36:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55751 states. [2021-11-06 20:36:46,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55751 to 55123. [2021-11-06 20:36:46,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55123 states, 54787 states have (on average 1.2882618139339623) internal successors, (70580), 55122 states have internal predecessors, (70580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55123 states to 55123 states and 70580 transitions. [2021-11-06 20:36:46,912 INFO L78 Accepts]: Start accepts. Automaton has 55123 states and 70580 transitions. Word has length 161 [2021-11-06 20:36:46,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:36:46,913 INFO L470 AbstractCegarLoop]: Abstraction has 55123 states and 70580 transitions. [2021-11-06 20:36:46,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:46,914 INFO L276 IsEmpty]: Start isEmpty. Operand 55123 states and 70580 transitions. [2021-11-06 20:36:46,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-06 20:36:46,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:36:46,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:46,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:36:46,923 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr140ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 333 more)] === [2021-11-06 20:36:46,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:36:46,923 INFO L85 PathProgramCache]: Analyzing trace with hash 930073601, now seen corresponding path program 1 times [2021-11-06 20:36:46,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:36:46,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287372995] [2021-11-06 20:36:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:36:46,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:36:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:36:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:36:47,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:36:47,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287372995] [2021-11-06 20:36:47,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287372995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:36:47,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:36:47,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:36:47,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762118951] [2021-11-06 20:36:47,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:36:47,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:36:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:36:47,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:36:47,523 INFO L87 Difference]: Start difference. First operand 55123 states and 70580 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:36:51,718 INFO L93 Difference]: Finished difference Result 144827 states and 185406 transitions. [2021-11-06 20:36:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:36:51,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-06 20:36:51,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:36:51,940 INFO L225 Difference]: With dead ends: 144827 [2021-11-06 20:36:51,940 INFO L226 Difference]: Without dead ends: 90012 [2021-11-06 20:36:52,055 INFO L786 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 [2021-11-06 20:36:52,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90012 states. [2021-11-06 20:36:53,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90012 to 89404. [2021-11-06 20:36:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89404 states, 89068 states have (on average 1.288509902546369) internal successors, (114765), 89403 states have internal predecessors, (114765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:54,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89404 states to 89404 states and 114765 transitions. [2021-11-06 20:36:54,214 INFO L78 Accepts]: Start accepts. Automaton has 89404 states and 114765 transitions. Word has length 162 [2021-11-06 20:36:54,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:36:54,214 INFO L470 AbstractCegarLoop]: Abstraction has 89404 states and 114765 transitions. [2021-11-06 20:36:54,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:36:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand 89404 states and 114765 transitions. [2021-11-06 20:36:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-06 20:36:54,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:36:54,220 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:36:54,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 20:36:54,228 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr196ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 333 more)] === [2021-11-06 20:36:54,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:36:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash -116384129, now seen corresponding path program 1 times [2021-11-06 20:36:54,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:36:54,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203199419] [2021-11-06 20:36:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:36:54,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:36:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:36:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:36:54,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:36:54,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203199419] [2021-11-06 20:36:54,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203199419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:36:54,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:36:54,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:36:54,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244511336] [2021-11-06 20:36:54,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:36:54,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:36:54,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:36:54,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:36:54,624 INFO L87 Difference]: Start difference. First operand 89404 states and 114765 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:37:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:37:00,231 INFO L93 Difference]: Finished difference Result 241857 states and 310598 transitions. [2021-11-06 20:37:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:37:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2021-11-06 20:37:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:37:00,709 INFO L225 Difference]: With dead ends: 241857 [2021-11-06 20:37:00,710 INFO L226 Difference]: Without dead ends: 152761 [2021-11-06 20:37:00,895 INFO L786 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 [2021-11-06 20:37:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152761 states. [2021-11-06 20:37:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152761 to 152143. [2021-11-06 20:37:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152143 states, 151807 states have (on average 1.2891763884405858) internal successors, (195706), 152142 states have internal predecessors, (195706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:37:04,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152143 states to 152143 states and 195706 transitions. [2021-11-06 20:37:04,546 INFO L78 Accepts]: Start accepts. Automaton has 152143 states and 195706 transitions. Word has length 163 [2021-11-06 20:37:04,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:37:04,547 INFO L470 AbstractCegarLoop]: Abstraction has 152143 states and 195706 transitions. [2021-11-06 20:37:04,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:37:04,548 INFO L276 IsEmpty]: Start isEmpty. Operand 152143 states and 195706 transitions. [2021-11-06 20:37:04,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-06 20:37:04,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:37:04,552 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:04,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 20:37:04,553 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 333 more)] === [2021-11-06 20:37:04,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:37:04,553 INFO L85 PathProgramCache]: Analyzing trace with hash -582956751, now seen corresponding path program 1 times [2021-11-06 20:37:04,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:37:04,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893443655] [2021-11-06 20:37:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:37:04,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:37:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:37:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:37:04,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:37:04,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893443655] [2021-11-06 20:37:04,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893443655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:37:04,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:37:04,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:37:04,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694538222] [2021-11-06 20:37:04,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:37:04,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:37:04,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:37:04,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:37:04,935 INFO L87 Difference]: Start difference. First operand 152143 states and 195706 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)