./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 5b36d44f 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-wip.dd.seqcomp-5b36d44 [2021-11-07 13:17:55,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:17:55,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:17:55,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:17:55,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:17:55,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:17:55,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:17:55,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:17:55,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:17:55,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:17:55,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:17:55,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:17:55,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:17:55,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:17:55,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:17:55,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:17:55,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:17:55,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:17:55,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:17:55,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:17:55,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:17:55,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:17:55,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:17:55,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:17:55,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:17:55,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:17:55,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:17:55,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:17:55,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:17:55,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:17:55,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:17:55,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:17:55,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:17:55,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:17:55,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:17:55,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:17:55,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:17:55,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:17:55,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:17:55,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:17:55,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:17:55,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:17:55,945 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:17:55,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:17:55,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:17:55,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:17:55,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:17:55,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:17:55,947 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:17:55,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:17:55,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:17:55,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:17:55,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:17:55,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:17:55,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:17:55,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:17:55,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:17:55,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:17:55,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:17:55,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:17:55,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:17:55,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:17:55,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:17:55,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:17:55,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:17:55,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:17:55,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:17:55,951 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:17:55,951 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:17:55,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:17:55,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:17:55,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa9ec5014a93fa4ada80c2707ca9ad7bdd1ffda04a5a3c96f283fdf229b22b41 [2021-11-07 13:17:56,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:17:56,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:17:56,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:17:56,144 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:17:56,145 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:17:56,146 INFO L432 ainManager$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 [2021-11-07 13:17:56,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/878c78c35/c17fa39e46e54570a881913bc938600e/FLAGc47ff3343 [2021-11-07 13:17:56,894 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:17:56,896 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 [2021-11-07 13:17:56,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/878c78c35/c17fa39e46e54570a881913bc938600e/FLAGc47ff3343 [2021-11-07 13:17:57,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/878c78c35/c17fa39e46e54570a881913bc938600e [2021-11-07 13:17:57,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:17:57,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:17:57,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:17:57,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:17:57,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:17:57,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:57" (1/1) ... [2021-11-07 13:17:57,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac3f082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:57, skipping insertion in model container [2021-11-07 13:17:57,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:57" (1/1) ... [2021-11-07 13:17:57,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:17:57,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:17:58,746 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] [2021-11-07 13:18:00,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:18:00,277 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:18:00,381 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] [2021-11-07 13:18:00,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:18:00,646 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:18:00,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00 WrapperNode [2021-11-07 13:18:00,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:18:00,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:18:00,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:18:00,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:18:00,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:00,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:03,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:18:03,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:18:03,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:18:03,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:18:03,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:03,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:03,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:03,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:04,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:05,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:05,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:05,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:18:05,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:18:05,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:18:05,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:18:05,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (1/1) ... [2021-11-07 13:18:05,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:18:05,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:18:05,628 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) [2021-11-07 13:18:05,633 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 [2021-11-07 13:18:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 13:18:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 13:18:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:18:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:18:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:18:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:18:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-07 13:18:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:18:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:18:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 13:18:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_pervif_cmd [2021-11-07 13:18:05,658 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_pervif_cmd [2021-11-07 13:18:05,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:18:05,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:18:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_cmd_bss_start [2021-11-07 13:18:05,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_cmd_bss_start [2021-11-07 13:18:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:18:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:18:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_enable_bsses [2021-11-07 13:18:05,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_enable_bsses [2021-11-07 13:18:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:18:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:18:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:18:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:18:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:18:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure mwl8k_post_cmd [2021-11-07 13:18:05,660 INFO L138 BoogieDeclarations]: Found implementation of procedure mwl8k_post_cmd [2021-11-07 13:18:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-07 13:20:17,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:20:17,902 INFO L299 CfgBuilder]: Removed 14276 assume(true) statements. [2021-11-07 13:20:17,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:17 BoogieIcfgContainer [2021-11-07 13:20:17,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:20:17,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:20:17,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:20:17,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:20:17,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:17:57" (1/3) ... [2021-11-07 13:20:17,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d814690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:17, skipping insertion in model container [2021-11-07 13:20:17,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:18:00" (2/3) ... [2021-11-07 13:20:17,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d814690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:17, skipping insertion in model container [2021-11-07 13:20:17,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:17" (3/3) ... [2021-11-07 13:20:17,922 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 [2021-11-07 13:20:17,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:20:17,926 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:20:18,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:20:18,008 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 [2021-11-07 13:20:18,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:20:18,183 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) [2021-11-07 13:20:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 13:20:18,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:18,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:18,205 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash -113770352, now seen corresponding path program 1 times [2021-11-07 13:20:18,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:18,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241930396] [2021-11-07 13:20:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:18,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:19,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:19,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241930396] [2021-11-07 13:20:19,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241930396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:19,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:19,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:20:19,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637095990] [2021-11-07 13:20:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:19,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:20:19,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:19,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:20:19,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:19,107 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) [2021-11-07 13:20:21,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:20:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:22,272 INFO L93 Difference]: Finished difference Result 47342 states and 69464 transitions. [2021-11-07 13:20:22,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:20:22,274 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 [2021-11-07 13:20:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:22,445 INFO L225 Difference]: With dead ends: 47342 [2021-11-07 13:20:22,446 INFO L226 Difference]: Without dead ends: 31097 [2021-11-07 13:20:22,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:22,580 INFO L933 BasicCegarLoop]: 22891 mSDtfsCounter, 22485 mSDsluCounter, 22680 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2113.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22485 SdHoareTripleChecker+Valid, 45571 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 123.05ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2234.88ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:22,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22485 Valid, 45571 Invalid, 15 Unknown, 0 Unchecked, 123.05ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2234.88ms Time] [2021-11-07 13:20:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31097 states. [2021-11-07 13:20:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31097 to 31097. [2021-11-07 13:20:23,384 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) [2021-11-07 13:20:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31097 states to 31097 states and 44364 transitions. [2021-11-07 13:20:23,490 INFO L78 Accepts]: Start accepts. Automaton has 31097 states and 44364 transitions. Word has length 76 [2021-11-07 13:20:23,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:23,491 INFO L470 AbstractCegarLoop]: Abstraction has 31097 states and 44364 transitions. [2021-11-07 13:20:23,492 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) [2021-11-07 13:20:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 31097 states and 44364 transitions. [2021-11-07 13:20:23,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 13:20:23,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:23,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:23,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:20:23,500 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:23,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:23,500 INFO L85 PathProgramCache]: Analyzing trace with hash -934046720, now seen corresponding path program 1 times [2021-11-07 13:20:23,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:23,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997072342] [2021-11-07 13:20:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:23,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:24,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:24,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997072342] [2021-11-07 13:20:24,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997072342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:24,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:24,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:20:24,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109116261] [2021-11-07 13:20:24,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:24,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:20:24,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:24,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:20:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:20:24,005 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) [2021-11-07 13:20:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:26,046 INFO L93 Difference]: Finished difference Result 93025 states and 132767 transitions. [2021-11-07 13:20:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:20:26,047 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 [2021-11-07 13:20:26,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:26,262 INFO L225 Difference]: With dead ends: 93025 [2021-11-07 13:20:26,264 INFO L226 Difference]: Without dead ends: 62056 [2021-11-07 13:20:26,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.37ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:20:26,376 INFO L933 BasicCegarLoop]: 22352 mSDtfsCounter, 22219 mSDsluCounter, 66686 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 723.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22219 SdHoareTripleChecker+Valid, 89038 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 87.91ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 865.48ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:26,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22219 Valid, 89038 Invalid, 545 Unknown, 0 Unchecked, 87.91ms Time], IncrementalHoareTripleChecker [5 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 865.48ms Time] [2021-11-07 13:20:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62056 states. [2021-11-07 13:20:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62056 to 61864. [2021-11-07 13:20:28,078 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) [2021-11-07 13:20:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61864 states to 61864 states and 88310 transitions. [2021-11-07 13:20:28,281 INFO L78 Accepts]: Start accepts. Automaton has 61864 states and 88310 transitions. Word has length 80 [2021-11-07 13:20:28,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:28,286 INFO L470 AbstractCegarLoop]: Abstraction has 61864 states and 88310 transitions. [2021-11-07 13:20:28,286 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) [2021-11-07 13:20:28,287 INFO L276 IsEmpty]: Start isEmpty. Operand 61864 states and 88310 transitions. [2021-11-07 13:20:28,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 13:20:28,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:28,301 INFO L514 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] [2021-11-07 13:20:28,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:20:28,302 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:28,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:28,302 INFO L85 PathProgramCache]: Analyzing trace with hash 170367372, now seen corresponding path program 1 times [2021-11-07 13:20:28,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:28,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48254966] [2021-11-07 13:20:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:28,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:28,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:28,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48254966] [2021-11-07 13:20:28,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48254966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:28,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:28,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:20:28,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005278738] [2021-11-07 13:20:28,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:28,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:20:28,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:20:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:28,602 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) [2021-11-07 13:20:30,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:30,472 INFO L93 Difference]: Finished difference Result 128838 states and 183823 transitions. [2021-11-07 13:20:30,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:20:30,473 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 [2021-11-07 13:20:30,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:30,709 INFO L225 Difference]: With dead ends: 128838 [2021-11-07 13:20:30,710 INFO L226 Difference]: Without dead ends: 67106 [2021-11-07 13:20:30,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:30,866 INFO L933 BasicCegarLoop]: 22290 mSDtfsCounter, 2011 mSDsluCounter, 22009 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 178.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 44299 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.24ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 213.77ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:30,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2011 Valid, 44299 Invalid, 113 Unknown, 0 Unchecked, 26.24ms Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 213.77ms Time] [2021-11-07 13:20:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67106 states. [2021-11-07 13:20:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67106 to 67088. [2021-11-07 13:20:32,403 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) [2021-11-07 13:20:32,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67088 states to 67088 states and 95652 transitions. [2021-11-07 13:20:32,630 INFO L78 Accepts]: Start accepts. Automaton has 67088 states and 95652 transitions. Word has length 104 [2021-11-07 13:20:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:32,632 INFO L470 AbstractCegarLoop]: Abstraction has 67088 states and 95652 transitions. [2021-11-07 13:20:32,632 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) [2021-11-07 13:20:32,633 INFO L276 IsEmpty]: Start isEmpty. Operand 67088 states and 95652 transitions. [2021-11-07 13:20:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-07 13:20:32,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:32,654 INFO L514 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] [2021-11-07 13:20:32,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:20:32,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:32,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:32,655 INFO L85 PathProgramCache]: Analyzing trace with hash 969969714, now seen corresponding path program 1 times [2021-11-07 13:20:32,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:32,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800203385] [2021-11-07 13:20:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:32,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:20:33,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:33,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800203385] [2021-11-07 13:20:33,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800203385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:33,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:33,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:20:33,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267936286] [2021-11-07 13:20:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:33,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:20:33,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:20:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:33,106 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) [2021-11-07 13:20:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:35,058 INFO L93 Difference]: Finished difference Result 165651 states and 235981 transitions. [2021-11-07 13:20:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:20:35,059 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 [2021-11-07 13:20:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:35,409 INFO L225 Difference]: With dead ends: 165651 [2021-11-07 13:20:35,409 INFO L226 Difference]: Without dead ends: 132070 [2021-11-07 13:20:35,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:35,718 INFO L933 BasicCegarLoop]: 42820 mSDtfsCounter, 20996 mSDsluCounter, 22261 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21191 SdHoareTripleChecker+Valid, 65081 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.55ms SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 270.96ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:35,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21191 Valid, 65081 Invalid, 142 Unknown, 0 Unchecked, 45.55ms Time], IncrementalHoareTripleChecker [70 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 270.96ms Time] [2021-11-07 13:20:35,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132070 states. [2021-11-07 13:20:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132070 to 67188. [2021-11-07 13:20:37,903 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) [2021-11-07 13:20:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67188 states to 67188 states and 95752 transitions. [2021-11-07 13:20:38,105 INFO L78 Accepts]: Start accepts. Automaton has 67188 states and 95752 transitions. Word has length 123 [2021-11-07 13:20:38,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:38,107 INFO L470 AbstractCegarLoop]: Abstraction has 67188 states and 95752 transitions. [2021-11-07 13:20:38,107 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) [2021-11-07 13:20:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand 67188 states and 95752 transitions. [2021-11-07 13:20:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 13:20:38,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:38,127 INFO L514 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] [2021-11-07 13:20:38,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:20:38,128 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1373570319, now seen corresponding path program 1 times [2021-11-07 13:20:38,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:38,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984343976] [2021-11-07 13:20:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:38,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:20:38,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:38,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984343976] [2021-11-07 13:20:38,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984343976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:38,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:38,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:20:38,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723229162] [2021-11-07 13:20:38,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:38,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:20:38,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:20:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:20:38,679 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) [2021-11-07 13:20:40,739 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:20:45,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:45,820 INFO L93 Difference]: Finished difference Result 166517 states and 237193 transitions. [2021-11-07 13:20:45,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 13:20:45,821 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 [2021-11-07 13:20:45,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:46,347 INFO L225 Difference]: With dead ends: 166517 [2021-11-07 13:20:46,347 INFO L226 Difference]: Without dead ends: 99461 [2021-11-07 13:20:46,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.31ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:20:46,512 INFO L933 BasicCegarLoop]: 42982 mSDtfsCounter, 42638 mSDsluCounter, 44222 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 46 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4246.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42833 SdHoareTripleChecker+Valid, 87204 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 218.71ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4774.69ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:46,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42833 Valid, 87204 Invalid, 1312 Unknown, 0 Unchecked, 218.71ms Time], IncrementalHoareTripleChecker [46 Valid, 1265 Invalid, 1 Unknown, 0 Unchecked, 4774.69ms Time] [2021-11-07 13:20:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99461 states. [2021-11-07 13:20:48,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99461 to 67038. [2021-11-07 13:20:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67038 states, 66221 states have (on average 1.4172543452983193) internal successors, (93852), 66229 states have internal predecessors, (93852), 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) [2021-11-07 13:20:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67038 states to 67038 states and 95452 transitions. [2021-11-07 13:20:48,804 INFO L78 Accepts]: Start accepts. Automaton has 67038 states and 95452 transitions. Word has length 125 [2021-11-07 13:20:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:20:48,807 INFO L470 AbstractCegarLoop]: Abstraction has 67038 states and 95452 transitions. [2021-11-07 13:20:48,807 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-11-07 13:20:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 67038 states and 95452 transitions. [2021-11-07 13:20:48,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-07 13:20:48,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:20:48,954 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:20:48,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 13:20:48,955 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:20:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:20:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash -344216144, now seen corresponding path program 1 times [2021-11-07 13:20:48,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:20:48,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289499096] [2021-11-07 13:20:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:20:48,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:20:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:20:49,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 13:20:49,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:20:49,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289499096] [2021-11-07 13:20:49,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289499096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:20:49,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:20:49,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:20:49,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435092905] [2021-11-07 13:20:49,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:20:49,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:20:49,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:20:49,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:20:49,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:49,240 INFO L87 Difference]: Start difference. First operand 67038 states and 95452 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2021-11-07 13:20:51,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:20:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:20:53,270 INFO L93 Difference]: Finished difference Result 140756 states and 200707 transitions. [2021-11-07 13:20:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:20:53,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 228 [2021-11-07 13:20:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:20:53,476 INFO L225 Difference]: With dead ends: 140756 [2021-11-07 13:20:53,476 INFO L226 Difference]: Without dead ends: 73850 [2021-11-07 13:20:53,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:20:53,640 INFO L933 BasicCegarLoop]: 24086 mSDtfsCounter, 12266 mSDsluCounter, 12344 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2306.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12266 SdHoareTripleChecker+Valid, 36430 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.86ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2501.43ms IncrementalHoareTripleChecker+Time [2021-11-07 13:20:53,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12266 Valid, 36430 Invalid, 185 Unknown, 0 Unchecked, 24.86ms Time], IncrementalHoareTripleChecker [72 Valid, 112 Invalid, 1 Unknown, 0 Unchecked, 2501.43ms Time] [2021-11-07 13:20:53,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73850 states.