./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-drivers-clk1_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 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 03:43:05,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:43:05,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:43:05,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:43:05,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:43:05,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:43:05,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:43:05,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:43:05,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:43:05,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:43:05,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:43:05,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:43:05,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:43:05,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:43:05,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:43:05,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:43:05,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:43:05,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:43:05,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:43:05,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:43:05,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:43:05,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:43:05,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:43:05,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:43:05,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:43:05,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:43:05,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:43:05,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:43:05,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:43:05,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:43:05,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:43:05,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:43:05,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:43:05,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:43:05,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:43:05,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:43:05,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:43:05,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:43:05,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:43:05,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:43:05,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:43:05,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 03:43:05,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:43:05,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:43:05,233 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:43:05,233 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:43:05,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:43:05,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:43:05,235 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 03:43:05,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:43:05,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:43:05,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:43:05,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:43:05,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:43:05,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:43:05,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:43:05,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:43:05,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:43:05,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:43:05,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:43:05,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:43:05,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:05,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:43:05,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:43:05,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:43:05,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 03:43:05,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:43:05,238 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 03:43:05,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 03:43:05,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:43:05,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:43:05,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 384d76f2b579c3776890746933030ac5fcfc9487f32fbc530ea50ee4dc8551b1 [2021-11-23 03:43:05,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:43:05,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:43:05,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:43:05,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:43:05,461 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:43:05,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2021-11-23 03:43:05,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3aad176/835f34014561406699103b5dccff0125/FLAG369fbec3e [2021-11-23 03:43:06,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:43:06,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2021-11-23 03:43:06,200 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3aad176/835f34014561406699103b5dccff0125/FLAG369fbec3e [2021-11-23 03:43:06,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3aad176/835f34014561406699103b5dccff0125 [2021-11-23 03:43:06,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:43:06,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:43:06,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:06,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:43:06,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:43:06,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:06" (1/1) ... [2021-11-23 03:43:06,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5360e86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:06, skipping insertion in model container [2021-11-23 03:43:06,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:43:06" (1/1) ... [2021-11-23 03:43:06,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:43:06,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:43:07,801 WARN L230 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-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2021-11-23 03:43:07,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:07,849 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:43:08,064 WARN L230 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-drivers-clk1_drivers-net-can-mcp251x.cil.i[269359,269372] [2021-11-23 03:43:08,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:43:08,142 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:43:08,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08 WrapperNode [2021-11-23 03:43:08,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:43:08,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:08,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:43:08,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:43:08,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:08,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:11,148 INFO L137 Inliner]: procedures = 306, calls = 1441, calls flagged for inlining = 562, calls inlined = 16100, statements flattened = 176169 [2021-11-23 03:43:11,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:43:11,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:43:11,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:43:11,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:43:11,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:11,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:11,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:11,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:13,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:13,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:14,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:15,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:43:15,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:43:15,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:43:15,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:43:15,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (1/1) ... [2021-11-23 03:43:15,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:43:15,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 03:43:15,376 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) [2021-11-23 03:43:15,397 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 [2021-11-23 03:43:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:43:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:43:15,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:43:15,939 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:43:15,940 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:54:53,257 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#4: ldv_switch_1_#res#1 := 0; [2021-11-23 03:54:53,258 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res#1 := 0; [2021-11-23 03:54:53,258 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res#1 := 0; [2021-11-23 03:54:53,258 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#1: ldv_switch_1_#res#1 := 0; [2021-11-23 03:54:53,258 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#1: ldv_switch_2_#res#1 := 0; [2021-11-23 03:54:53,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#1: ldv_switch_4_#res#1 := 0; [2021-11-23 03:54:53,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res#1 := 0; [2021-11-23 03:54:53,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#1: ldv_switch_0_#res#1 := 0; [2021-11-23 03:54:53,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res#1 := 0; [2021-11-23 03:54:53,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#1: ldv_switch_3_#res#1 := 0; [2021-11-23 03:54:53,259 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res#1 := 0; [2021-11-23 03:54:53,261 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:54:53,266 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:54:53,314 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:54:53,315 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:54:53,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:53 BoogieIcfgContainer [2021-11-23 03:54:53,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:54:53,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:54:53,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:54:53,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:54:53,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:43:06" (1/3) ... [2021-11-23 03:54:53,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cd9f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:54:53, skipping insertion in model container [2021-11-23 03:54:53,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:43:08" (2/3) ... [2021-11-23 03:54:53,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20cd9f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:54:53, skipping insertion in model container [2021-11-23 03:54:53,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:54:53" (3/3) ... [2021-11-23 03:54:53,338 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-drivers-clk1_drivers-net-can-mcp251x.cil.i [2021-11-23 03:54:53,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:54:53,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 03:54:53,443 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:54:53,449 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 [2021-11-23 03:54:53,449 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 03:54:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 26754 states, 26748 states have (on average 1.2888814116943323) internal successors, (34475), 26753 states have internal predecessors, (34475), 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) [2021-11-23 03:54:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 03:54:53,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:54:53,714 INFO L514 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] [2021-11-23 03:54:53,714 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 03:54:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:54:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash -305181810, now seen corresponding path program 1 times [2021-11-23 03:54:53,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:54:53,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094859857] [2021-11-23 03:54:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:54:53,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:54:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:54:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:54:54,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:54:54,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094859857] [2021-11-23 03:54:54,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094859857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:54:54,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:54:54,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:54:54,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100230760] [2021-11-23 03:54:54,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:54:54,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:54:54,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:54:54,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:54:54,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:54:54,643 INFO L87 Difference]: Start difference. First operand has 26754 states, 26748 states have (on average 1.2888814116943323) internal successors, (34475), 26753 states have internal predecessors, (34475), 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 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-23 03:54:56,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:54:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:54:58,573 INFO L93 Difference]: Finished difference Result 79906 states and 102977 transitions. [2021-11-23 03:54:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:54:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-23 03:54:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:54:58,750 INFO L225 Difference]: With dead ends: 79906 [2021-11-23 03:54:58,750 INFO L226 Difference]: Without dead ends: 52031 [2021-11-23 03:54:58,822 INFO L932 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 [2021-11-23 03:54:58,826 INFO L933 BasicCegarLoop]: 34420 mSDtfsCounter, 34149 mSDsluCounter, 34367 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34149 SdHoareTripleChecker+Valid, 68787 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:54:58,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34149 Valid, 68787 Invalid, 44 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 03:54:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52031 states. [2021-11-23 03:55:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52031 to 52031. [2021-11-23 03:55:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52031 states, 52025 states have (on average 1.2707928880345987) internal successors, (66113), 52030 states have internal predecessors, (66113), 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) [2021-11-23 03:55:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52031 states to 52031 states and 66113 transitions. [2021-11-23 03:55:00,346 INFO L78 Accepts]: Start accepts. Automaton has 52031 states and 66113 transitions. Word has length 55 [2021-11-23 03:55:00,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:55:00,347 INFO L470 AbstractCegarLoop]: Abstraction has 52031 states and 66113 transitions. [2021-11-23 03:55:00,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-23 03:55:00,349 INFO L276 IsEmpty]: Start isEmpty. Operand 52031 states and 66113 transitions. [2021-11-23 03:55:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 03:55:00,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:55:00,362 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2021-11-23 03:55:00,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:55:00,363 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 03:55:00,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:55:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash -986571221, now seen corresponding path program 1 times [2021-11-23 03:55:00,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:55:00,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676794685] [2021-11-23 03:55:00,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:55:00,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:55:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:55:00,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:55:00,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:55:00,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676794685] [2021-11-23 03:55:00,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676794685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:55:00,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:55:00,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:55:00,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900086716] [2021-11-23 03:55:00,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:55:00,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:55:00,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:55:00,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:55:00,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:55:00,732 INFO L87 Difference]: Start difference. First operand 52031 states and 66113 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2021-11-23 03:55:02,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []