./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fa9ec5014a93fa4ada80c2707ca9ad7bdd1ffda04a5a3c96f283fdf229b22b41 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:45:51,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:45:51,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:45:51,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:45:51,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:45:51,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:45:51,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:45:51,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:45:51,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:45:51,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:45:51,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:45:51,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:45:51,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:45:51,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:45:51,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:45:51,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:45:51,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:45:51,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:45:51,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:45:51,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:45:51,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:45:51,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:45:51,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:45:51,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:45:51,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:45:51,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:45:51,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:45:51,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:45:51,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:45:51,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:45:51,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:45:51,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:45:51,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:45:51,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:45:51,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:45:51,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:45:51,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:45:51,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:45:51,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:45:51,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:45:51,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:45:51,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:45:51,654 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:45:51,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:45:51,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:45:51,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:45:51,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:45:51,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:45:51,655 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:45:51,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:45:51,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:45:51,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:45:51,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:45:51,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:45:51,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:45:51,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:45:51,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:45:51,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:45:51,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:45:51,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:45:51,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:45:51,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:45:51,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:45:51,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:45:51,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:45:51,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:45:51,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:45:51,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:45:51,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:45:51,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:45:51,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:45:51,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa9ec5014a93fa4ada80c2707ca9ad7bdd1ffda04a5a3c96f283fdf229b22b41 [2021-11-06 14:45:51,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:45:51,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:45:51,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:45:51,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:45:51,898 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:45:51,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-06 14:45:51,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123acb034/c81c5fa6ef26457aa6780c96710d09fd/FLAGc1f60c29b [2021-11-06 14:45:52,657 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:45:52,658 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-06 14:45:52,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123acb034/c81c5fa6ef26457aa6780c96710d09fd/FLAGc1f60c29b [2021-11-06 14:45:52,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123acb034/c81c5fa6ef26457aa6780c96710d09fd [2021-11-06 14:45:52,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:45:52,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:45:52,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:45:52,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:45:52,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:45:52,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:45:52" (1/1) ... [2021-11-06 14:45:52,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a156cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:52, skipping insertion in model container [2021-11-06 14:45:52,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:45:52" (1/1) ... [2021-11-06 14:45:52,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:45:53,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:45:54,402 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[223336,223349] [2021-11-06 14:45:55,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:45:55,757 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:45:55,819 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i[223336,223349] [2021-11-06 14:45:56,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:45:56,171 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:45:56,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56 WrapperNode [2021-11-06 14:45:56,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:45:56,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:45:56,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:45:56,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:45:56,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:45:56,300 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:45:58,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:45:58,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:45:58,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:45:58,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:45:58,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:45:58,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:45:59,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:45:59,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:46:00,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:46:00,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:46:01,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:46:01,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:46:01,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:46:01,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:46:01,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:46:01,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (1/1) ... [2021-11-06 14:46:01,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:46:01,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:46:01,882 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 14:46:01,891 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 14:46:01,927 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 14:46:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:46:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:46:01,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:46:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:46:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:46:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-06 14:46:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:46:01,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:46:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:46:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_pervif_cmd [2021-11-06 14:46:01,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_pervif_cmd [2021-11-06 14:46:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:46:01,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:46:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bss_start [2021-11-06 14:46:01,930 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bss_start [2021-11-06 14:46:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:46:01,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:46:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_enable_bsses [2021-11-06 14:46:01,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_enable_bsses [2021-11-06 14:46:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:46:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:46:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:46:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:46:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:46:01,931 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_cmd [2021-11-06 14:46:01,931 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_cmd [2021-11-06 14:46:01,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-06 14:48:17,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:48:17,115 INFO L299 CfgBuilder]: Removed 14276 assume(true) statements. [2021-11-06 14:48:17,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:48:17 BoogieIcfgContainer [2021-11-06 14:48:17,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:48:17,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:48:17,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:48:17,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:48:17,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:45:52" (1/3) ... [2021-11-06 14:48:17,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7c04bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:48:17, skipping insertion in model container [2021-11-06 14:48:17,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:45:56" (2/3) ... [2021-11-06 14:48:17,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d7c04bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:48:17, skipping insertion in model container [2021-11-06 14:48:17,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:48:17" (3/3) ... [2021-11-06 14:48:17,136 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--mwl8k.ko-entry_point.cil.out.i [2021-11-06 14:48:17,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:48:17,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 14:48:17,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:48:17,296 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 14:48:17,296 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 14:48:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 15838 states, 15632 states have (on average 1.4521494370522006) internal successors, (22700), 15635 states have internal predecessors, (22700), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) [2021-11-06 14:48:17,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-06 14:48:17,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:48:17,551 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] [2021-11-06 14:48:17,553 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:48:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:48:17,558 INFO L85 PathProgramCache]: Analyzing trace with hash -113770352, now seen corresponding path program 1 times [2021-11-06 14:48:17,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:48:17,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798623667] [2021-11-06 14:48:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:48:17,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:48:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:48:18,374 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 14:48:18,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:48:18,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798623667] [2021-11-06 14:48:18,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798623667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:48:18,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:48:18,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:48:18,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278691266] [2021-11-06 14:48:18,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:48:18,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:48:18,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:48:18,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:48:18,419 INFO L87 Difference]: Start difference. First operand has 15838 states, 15632 states have (on average 1.4521494370522006) internal successors, (22700), 15635 states have internal predecessors, (22700), 200 states have call successors, (200), 4 states have call predecessors, (200), 4 states have return successors, (200), 200 states have call predecessors, (200), 200 states have call successors, (200) Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:48:21,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:48:21,816 INFO L93 Difference]: Finished difference Result 47342 states and 69464 transitions. [2021-11-06 14:48:21,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:48:21,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2021-11-06 14:48:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:48:21,976 INFO L225 Difference]: With dead ends: 47342 [2021-11-06 14:48:21,977 INFO L226 Difference]: Without dead ends: 31097 [2021-11-06 14:48:22,084 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 14:48:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31097 states. [2021-11-06 14:48:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31097 to 31097. [2021-11-06 14:48:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31097 states, 30688 states have (on average 1.419577685088634) internal successors, (43564), 30692 states have internal predecessors, (43564), 400 states have call successors, (400), 8 states have call predecessors, (400), 8 states have return successors, (400), 400 states have call predecessors, (400), 400 states have call successors, (400) [2021-11-06 14:48:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31097 states to 31097 states and 44364 transitions. [2021-11-06 14:48:22,879 INFO L78 Accepts]: Start accepts. Automaton has 31097 states and 44364 transitions. Word has length 76 [2021-11-06 14:48:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:48:22,879 INFO L470 AbstractCegarLoop]: Abstraction has 31097 states and 44364 transitions. [2021-11-06 14:48:22,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 14:48:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 31097 states and 44364 transitions. [2021-11-06 14:48:22,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 14:48:22,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:48:22,884 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] [2021-11-06 14:48:22,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:48:22,885 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:48:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:48:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash -934046720, now seen corresponding path program 1 times [2021-11-06 14:48:22,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:48:22,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100955600] [2021-11-06 14:48:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:48:22,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:48:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:48:23,181 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 14:48:23,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:48:23,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100955600] [2021-11-06 14:48:23,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100955600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:48:23,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:48:23,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:48:23,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388848375] [2021-11-06 14:48:23,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:48:23,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:48:23,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:48:23,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:48:23,184 INFO L87 Difference]: Start difference. First operand 31097 states and 44364 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 14:48:25,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:48:25,483 INFO L93 Difference]: Finished difference Result 93025 states and 132767 transitions. [2021-11-06 14:48:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:48:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 80 [2021-11-06 14:48:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:48:25,740 INFO L225 Difference]: With dead ends: 93025 [2021-11-06 14:48:25,740 INFO L226 Difference]: Without dead ends: 62056 [2021-11-06 14:48:25,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:48:25,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62056 states. [2021-11-06 14:48:27,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62056 to 61864. [2021-11-06 14:48:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61864 states, 61047 states have (on average 1.4203810179042378) internal successors, (86710), 61055 states have internal predecessors, (86710), 800 states have call successors, (800), 16 states have call predecessors, (800), 16 states have return successors, (800), 800 states have call predecessors, (800), 800 states have call successors, (800) [2021-11-06 14:48:27,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61864 states to 61864 states and 88310 transitions. [2021-11-06 14:48:27,702 INFO L78 Accepts]: Start accepts. Automaton has 61864 states and 88310 transitions. Word has length 80 [2021-11-06 14:48:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:48:27,703 INFO L470 AbstractCegarLoop]: Abstraction has 61864 states and 88310 transitions. [2021-11-06 14:48:27,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 14:48:27,703 INFO L276 IsEmpty]: Start isEmpty. Operand 61864 states and 88310 transitions. [2021-11-06 14:48:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-06 14:48:27,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:48:27,720 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:48:27,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:48:27,725 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:48:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:48:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash 170367372, now seen corresponding path program 1 times [2021-11-06 14:48:27,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:48:27,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447283398] [2021-11-06 14:48:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:48:27,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:48:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:48:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:48:27,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:48:27,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447283398] [2021-11-06 14:48:27,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447283398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:48:27,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:48:27,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:48:27,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089182944] [2021-11-06 14:48:27,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:48:27,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:48:27,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:48:27,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:48:27,984 INFO L87 Difference]: Start difference. First operand 61864 states and 88310 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 14:48:29,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:48:29,570 INFO L93 Difference]: Finished difference Result 128838 states and 183823 transitions. [2021-11-06 14:48:29,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:48:29,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-11-06 14:48:29,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:48:29,770 INFO L225 Difference]: With dead ends: 128838 [2021-11-06 14:48:29,770 INFO L226 Difference]: Without dead ends: 67106 [2021-11-06 14:48:29,945 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 14:48:30,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67106 states. [2021-11-06 14:48:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67106 to 67088. [2021-11-06 14:48:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67088 states, 66271 states have (on average 1.4192029696247228) internal successors, (94052), 66279 states have internal predecessors, (94052), 800 states have call successors, (800), 16 states have call predecessors, (800), 16 states have return successors, (800), 800 states have call predecessors, (800), 800 states have call successors, (800) [2021-11-06 14:48:31,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67088 states to 67088 states and 95652 transitions. [2021-11-06 14:48:31,630 INFO L78 Accepts]: Start accepts. Automaton has 67088 states and 95652 transitions. Word has length 104 [2021-11-06 14:48:31,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:48:31,634 INFO L470 AbstractCegarLoop]: Abstraction has 67088 states and 95652 transitions. [2021-11-06 14:48:31,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 14:48:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 67088 states and 95652 transitions. [2021-11-06 14:48:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-06 14:48:31,653 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:48:31,654 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 14:48:31,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:48:31,654 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:48:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:48:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash 969969714, now seen corresponding path program 1 times [2021-11-06 14:48:31,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:48:31,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268518074] [2021-11-06 14:48:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:48:31,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:48:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:48:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:48:31,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:48:31,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268518074] [2021-11-06 14:48:31,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268518074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:48:31,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:48:31,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:48:31,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35670414] [2021-11-06 14:48:31,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:48:31,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:48:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:48:31,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:48:31,916 INFO L87 Difference]: Start difference. First operand 67088 states and 95652 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 14:48:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:48:34,525 INFO L93 Difference]: Finished difference Result 165651 states and 235981 transitions. [2021-11-06 14:48:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:48:34,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 123 [2021-11-06 14:48:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:48:34,907 INFO L225 Difference]: With dead ends: 165651 [2021-11-06 14:48:34,907 INFO L226 Difference]: Without dead ends: 132070 [2021-11-06 14:48:35,028 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 14:48:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132070 states. [2021-11-06 14:48:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132070 to 67188. [2021-11-06 14:48:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67188 states, 66371 states have (on average 1.4185713639993371) internal successors, (94152), 66379 states have internal predecessors, (94152), 800 states have call successors, (800), 16 states have call predecessors, (800), 16 states have return successors, (800), 800 states have call predecessors, (800), 800 states have call successors, (800) [2021-11-06 14:48:37,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67188 states to 67188 states and 95752 transitions. [2021-11-06 14:48:37,449 INFO L78 Accepts]: Start accepts. Automaton has 67188 states and 95752 transitions. Word has length 123 [2021-11-06 14:48:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:48:37,450 INFO L470 AbstractCegarLoop]: Abstraction has 67188 states and 95752 transitions. [2021-11-06 14:48:37,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 14:48:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 67188 states and 95752 transitions. [2021-11-06 14:48:37,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 14:48:37,466 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:48:37,466 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 14:48:37,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:48:37,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:48:37,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:48:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1373570319, now seen corresponding path program 1 times [2021-11-06 14:48:37,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:48:37,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519704536] [2021-11-06 14:48:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:48:37,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:48:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:48:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:48:37,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:48:37,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519704536] [2021-11-06 14:48:37,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519704536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:48:37,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:48:37,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:48:37,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255846220] [2021-11-06 14:48:37,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:48:37,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:48:37,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:48:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:48:37,769 INFO L87 Difference]: Start difference. First operand 67188 states and 95752 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 14:48:45,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:48:45,017 INFO L93 Difference]: Finished difference Result 166517 states and 237193 transitions. [2021-11-06 14:48:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:48:45,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 125 [2021-11-06 14:48:45,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:48:45,357 INFO L225 Difference]: With dead ends: 166517 [2021-11-06 14:48:45,357 INFO L226 Difference]: Without dead ends: 99461 [2021-11-06 14:48:45,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:48:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99461 states.