./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.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 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 18:33:43,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 18:33:43,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 18:33:43,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 18:33:43,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 18:33:43,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 18:33:43,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 18:33:43,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 18:33:43,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 18:33:43,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 18:33:43,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 18:33:43,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 18:33:43,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 18:33:43,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 18:33:43,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 18:33:43,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 18:33:43,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 18:33:43,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 18:33:43,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 18:33:43,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 18:33:43,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 18:33:43,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 18:33:43,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 18:33:43,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 18:33:43,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 18:33:43,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 18:33:43,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 18:33:43,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 18:33:43,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 18:33:43,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 18:33:43,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 18:33:43,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 18:33:43,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 18:33:43,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 18:33:43,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 18:33:43,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 18:33:43,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 18:33:43,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 18:33:43,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 18:33:43,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 18:33:43,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 18:33:43,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 18:33:43,938 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 18:33:43,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 18:33:43,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 18:33:43,938 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 18:33:43,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 18:33:43,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 18:33:43,940 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 18:33:43,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 18:33:43,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 18:33:43,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 18:33:43,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 18:33:43,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 18:33:43,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 18:33:43,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 18:33:43,941 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 18:33:43,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 18:33:43,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 18:33:43,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 18:33:43,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 18:33:43,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:33:43,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 18:33:43,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 18:33:43,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 18:33:43,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 18:33:43,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 18:33:43,943 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 18:33:43,943 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 18:33:43,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 18:33:43,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 18:33:43,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34736e16fed7ff8cc88604084fa777d707e75948c95ce657a43a86ad92782d71 [2021-11-06 18:33:44,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 18:33:44,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 18:33:44,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 18:33:44,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 18:33:44,129 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 18:33:44,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-06 18:33:44,177 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8affd2b23/e976d9271a03449789ef459a4bc742b2/FLAG89e4b751e [2021-11-06 18:33:44,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 18:33:44,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-06 18:33:44,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8affd2b23/e976d9271a03449789ef459a4bc742b2/FLAG89e4b751e [2021-11-06 18:33:45,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8affd2b23/e976d9271a03449789ef459a4bc742b2 [2021-11-06 18:33:45,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 18:33:45,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 18:33:45,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 18:33:45,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 18:33:45,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 18:33:45,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:33:45" (1/1) ... [2021-11-06 18:33:45,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1819dbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:45, skipping insertion in model container [2021-11-06 18:33:45,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:33:45" (1/1) ... [2021-11-06 18:33:45,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 18:33:45,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 18:33:46,694 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-11-06 18:33:46,699 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-11-06 18:33:46,699 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-11-06 18:33:46,699 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-11-06 18:33:46,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:33:46,756 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 18:33:46,954 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278128,278141] [2021-11-06 18:33:46,955 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278294,278307] [2021-11-06 18:33:46,955 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278458,278471] [2021-11-06 18:33:46,955 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-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i[278623,278636] [2021-11-06 18:33:46,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 18:33:47,038 INFO L208 MainTranslator]: Completed translation [2021-11-06 18:33:47,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47 WrapperNode [2021-11-06 18:33:47,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 18:33:47,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 18:33:47,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 18:33:47,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 18:33:47,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:47,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:50,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 18:33:50,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 18:33:50,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 18:33:50,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 18:33:50,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:50,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:50,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:50,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:52,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:53,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:53,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:54,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 18:33:54,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 18:33:54,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 18:33:54,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 18:33:54,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (1/1) ... [2021-11-06 18:33:54,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 18:33:54,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 18:33:54,134 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 18:33:54,137 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 18:33:54,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 18:33:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 18:33:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 18:33:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 18:33:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 18:33:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 18:33:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 18:33:54,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 18:33:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 18:33:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 18:33:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 18:33:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 18:33:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:33:54,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 18:33:54,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 18:44:17,888 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res := 0; [2021-11-06 18:44:17,888 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 18:44:17,888 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 18:44:17,888 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 18:44:17,889 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-06 18:44:17,889 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 18:44:17,889 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-06 18:44:17,889 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 18:44:17,891 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 18:44:17,896 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 18:44:17,899 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-06 18:44:17,899 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 18:44:17,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:44:17,980 INFO L299 CfgBuilder]: Removed 32664 assume(true) statements. [2021-11-06 18:44:18,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:44:18 BoogieIcfgContainer [2021-11-06 18:44:18,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:44:18,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:44:18,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:44:18,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:44:18,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:33:45" (1/3) ... [2021-11-06 18:44:18,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83e0b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:44:18, skipping insertion in model container [2021-11-06 18:44:18,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:33:47" (2/3) ... [2021-11-06 18:44:18,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83e0b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:44:18, skipping insertion in model container [2021-11-06 18:44:18,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:44:18" (3/3) ... [2021-11-06 18:44:18,008 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-can-mcp251x.cil.i [2021-11-06 18:44:18,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:44:18,014 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2021-11-06 18:44:18,089 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:44:18,093 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 18:44:18,093 INFO L340 AbstractCegarLoop]: Starting to check reachability of 100 error locations. [2021-11-06 18:44:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 24230 states, 24130 states have (on average 1.3288437629506837) internal successors, (32065), 24229 states have internal predecessors, (32065), 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 18:44:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-06 18:44:18,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:44:18,323 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] [2021-11-06 18:44:18,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-06 18:44:18,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:44:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash 148840952, now seen corresponding path program 1 times [2021-11-06 18:44:18,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:44:18,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907270932] [2021-11-06 18:44:18,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:44:18,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:44:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:44:18,960 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 18:44:18,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:44:18,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907270932] [2021-11-06 18:44:18,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907270932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:44:18,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:44:18,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:44:18,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374342052] [2021-11-06 18:44:18,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:44:18,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:44:18,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:44:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:44:19,012 INFO L87 Difference]: Start difference. First operand has 24230 states, 24130 states have (on average 1.3288437629506837) internal successors, (32065), 24229 states have internal predecessors, (32065), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 18:44:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:44:23,590 INFO L93 Difference]: Finished difference Result 68075 states and 90129 transitions. [2021-11-06 18:44:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:44:23,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2021-11-06 18:44:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:44:23,735 INFO L225 Difference]: With dead ends: 68075 [2021-11-06 18:44:23,736 INFO L226 Difference]: Without dead ends: 42743 [2021-11-06 18:44:23,794 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 18:44:23,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42743 states. [2021-11-06 18:44:24,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42743 to 42168. [2021-11-06 18:44:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42168 states, 42068 states have (on average 1.3076447656175716) internal successors, (55010), 42167 states have internal predecessors, (55010), 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 18:44:25,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42168 states to 42168 states and 55010 transitions. [2021-11-06 18:44:25,300 INFO L78 Accepts]: Start accepts. Automaton has 42168 states and 55010 transitions. Word has length 50 [2021-11-06 18:44:25,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:44:25,301 INFO L470 AbstractCegarLoop]: Abstraction has 42168 states and 55010 transitions. [2021-11-06 18:44:25,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 18:44:25,302 INFO L276 IsEmpty]: Start isEmpty. Operand 42168 states and 55010 transitions. [2021-11-06 18:44:25,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-06 18:44:25,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:44:25,306 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] [2021-11-06 18:44:25,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:44:25,307 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-06 18:44:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:44:25,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1215946867, now seen corresponding path program 1 times [2021-11-06 18:44:25,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:44:25,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605758073] [2021-11-06 18:44:25,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:44:25,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:44:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:44:25,574 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 18:44:25,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:44:25,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605758073] [2021-11-06 18:44:25,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605758073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:44:25,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:44:25,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:44:25,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654809800] [2021-11-06 18:44:25,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:44:25,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:44:25,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:44:25,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:44:25,577 INFO L87 Difference]: Start difference. First operand 42168 states and 55010 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 18:44:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:44:29,420 INFO L93 Difference]: Finished difference Result 126168 states and 164667 transitions. [2021-11-06 18:44:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:44:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2021-11-06 18:44:29,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:44:29,613 INFO L225 Difference]: With dead ends: 126168 [2021-11-06 18:44:29,615 INFO L226 Difference]: Without dead ends: 84092 [2021-11-06 18:44:29,701 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 18:44:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84092 states. [2021-11-06 18:44:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84092 to 83916. [2021-11-06 18:44:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83916 states, 83816 states have (on average 1.3082704972797556) internal successors, (109654), 83915 states have internal predecessors, (109654), 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 18:44:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83916 states to 83916 states and 109654 transitions. [2021-11-06 18:44:31,562 INFO L78 Accepts]: Start accepts. Automaton has 83916 states and 109654 transitions. Word has length 52 [2021-11-06 18:44:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:44:31,563 INFO L470 AbstractCegarLoop]: Abstraction has 83916 states and 109654 transitions. [2021-11-06 18:44:31,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 18:44:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 83916 states and 109654 transitions. [2021-11-06 18:44:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-06 18:44:31,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:44:31,571 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] [2021-11-06 18:44:31,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:44:31,572 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-06 18:44:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:44:31,572 INFO L85 PathProgramCache]: Analyzing trace with hash -964483963, now seen corresponding path program 1 times [2021-11-06 18:44:31,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:44:31,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664940856] [2021-11-06 18:44:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:44:31,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:44:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:44:31,808 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 18:44:31,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:44:31,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664940856] [2021-11-06 18:44:31,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664940856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:44:31,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:44:31,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:44:31,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856433461] [2021-11-06 18:44:31,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:44:31,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:44:31,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:44:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:44:31,810 INFO L87 Difference]: Start difference. First operand 83916 states and 109654 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 18:44:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:44:36,225 INFO L93 Difference]: Finished difference Result 187832 states and 245624 transitions. [2021-11-06 18:44:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:44:36,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2021-11-06 18:44:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:44:36,514 INFO L225 Difference]: With dead ends: 187832 [2021-11-06 18:44:36,514 INFO L226 Difference]: Without dead ends: 104008 [2021-11-06 18:44:36,638 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 18:44:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104008 states. [2021-11-06 18:44:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104008 to 103880. [2021-11-06 18:44:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103880 states, 103780 states have (on average 1.3090576218924648) internal successors, (135854), 103879 states have internal predecessors, (135854), 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 18:44:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103880 states to 103880 states and 135854 transitions. [2021-11-06 18:44:39,188 INFO L78 Accepts]: Start accepts. Automaton has 103880 states and 135854 transitions. Word has length 53 [2021-11-06 18:44:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:44:39,188 INFO L470 AbstractCegarLoop]: Abstraction has 103880 states and 135854 transitions. [2021-11-06 18:44:39,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 18:44:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 103880 states and 135854 transitions. [2021-11-06 18:44:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-06 18:44:39,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:44:39,190 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] [2021-11-06 18:44:39,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:44:39,190 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr94ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-06 18:44:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:44:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1281271944, now seen corresponding path program 1 times [2021-11-06 18:44:39,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:44:39,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010249790] [2021-11-06 18:44:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:44:39,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:44:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:44:39,386 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 18:44:39,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:44:39,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010249790] [2021-11-06 18:44:39,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010249790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:44:39,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:44:39,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:44:39,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673011772] [2021-11-06 18:44:39,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:44:39,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:44:39,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:44:39,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:44:39,388 INFO L87 Difference]: Start difference. First operand 103880 states and 135854 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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)