./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--rtlwifi--rtl8192cu--rtl8192cu.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--rtlwifi--rtl8192cu--rtl8192cu.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 d3eedf009c0354e40f9e91d5f02bdbd29fc69486fea85bd401e2764ccaedb5c6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 13:19:25,786 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 13:19:25,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 13:19:25,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 13:19:25,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 13:19:25,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 13:19:25,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 13:19:25,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 13:19:25,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 13:19:25,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 13:19:25,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 13:19:25,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 13:19:25,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 13:19:25,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 13:19:25,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 13:19:25,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 13:19:25,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 13:19:25,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 13:19:25,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 13:19:25,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 13:19:25,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 13:19:25,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 13:19:25,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 13:19:25,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 13:19:25,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 13:19:25,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 13:19:25,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 13:19:25,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 13:19:25,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 13:19:25,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 13:19:25,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 13:19:25,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 13:19:25,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 13:19:25,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 13:19:25,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 13:19:25,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 13:19:25,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 13:19:25,854 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 13:19:25,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 13:19:25,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 13:19:25,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 13:19:25,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 13:19:25,876 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 13:19:25,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 13:19:25,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 13:19:25,877 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 13:19:25,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 13:19:25,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 13:19:25,878 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 13:19:25,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 13:19:25,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 13:19:25,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 13:19:25,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 13:19:25,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 13:19:25,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 13:19:25,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 13:19:25,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 13:19:25,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 13:19:25,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 13:19:25,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 13:19:25,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 13:19:25,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:19:25,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 13:19:25,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 13:19:25,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 13:19:25,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 13:19:25,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 13:19:25,882 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 13:19:25,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 13:19:25,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 13:19:25,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 13:19:25,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3eedf009c0354e40f9e91d5f02bdbd29fc69486fea85bd401e2764ccaedb5c6 [2021-11-07 13:19:26,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 13:19:26,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 13:19:26,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 13:19:26,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 13:19:26,106 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 13:19:26,107 INFO L432 ainManager$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--rtlwifi--rtl8192cu--rtl8192cu.ko-entry_point.cil.out.i [2021-11-07 13:19:26,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3c51ab27/0e6ea4435ad94845984810ac5644ab80/FLAG48601347e [2021-11-07 13:19:27,016 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 13:19:27,017 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--rtlwifi--rtl8192cu--rtl8192cu.ko-entry_point.cil.out.i [2021-11-07 13:19:27,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3c51ab27/0e6ea4435ad94845984810ac5644ab80/FLAG48601347e [2021-11-07 13:19:27,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3c51ab27/0e6ea4435ad94845984810ac5644ab80 [2021-11-07 13:19:27,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 13:19:27,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 13:19:27,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 13:19:27,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 13:19:27,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 13:19:27,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:27" (1/1) ... [2021-11-07 13:19:27,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d43d690 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:27, skipping insertion in model container [2021-11-07 13:19:27,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:27" (1/1) ... [2021-11-07 13:19:27,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 13:19:27,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 13:19:28,221 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--rtlwifi--rtl8192cu--rtl8192cu.ko-entry_point.cil.out.i[223980,223993] [2021-11-07 13:19:31,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:19:31,458 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 13:19:31,634 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--rtlwifi--rtl8192cu--rtl8192cu.ko-entry_point.cil.out.i[223980,223993] [2021-11-07 13:19:31,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 13:19:32,215 INFO L208 MainTranslator]: Completed translation [2021-11-07 13:19:32,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32 WrapperNode [2021-11-07 13:19:32,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 13:19:32,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 13:19:32,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 13:19:32,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 13:19:32,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:32,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:34,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 13:19:34,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 13:19:34,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 13:19:34,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 13:19:34,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:34,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:34,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:34,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:35,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:36,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:36,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:36,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 13:19:36,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 13:19:36,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 13:19:36,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 13:19:36,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (1/1) ... [2021-11-07 13:19:36,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 13:19:36,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 13:19:36,677 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 13:19:36,703 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 13:19:36,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-07 13:19:36,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 13:19:36,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 13:19:36,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 13:19:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 13:19:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-07 13:19:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 13:19:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 13:19:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 13:19:36,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 13:19:36,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 13:19:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 13:19:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 13:19:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~TO~VOID [2021-11-07 13:19:36,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~TO~VOID [2021-11-07 13:19:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 13:19:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 13:19:36,724 INFO L130 BoogieDeclarations]: Found specification of procedure rtl92cu_get_hw_reg [2021-11-07 13:19:36,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl92cu_get_hw_reg [2021-11-07 13:19:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 13:19:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 13:19:36,725 INFO L130 BoogieDeclarations]: Found specification of procedure rtl92cu_set_hw_reg [2021-11-07 13:19:36,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl92cu_set_hw_reg [2021-11-07 13:19:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 13:19:36,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-07 13:22:42,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 13:22:42,941 INFO L299 CfgBuilder]: Removed 10707 assume(true) statements. [2021-11-07 13:22:42,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:42 BoogieIcfgContainer [2021-11-07 13:22:42,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 13:22:42,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 13:22:42,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 13:22:42,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 13:22:42,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:19:27" (1/3) ... [2021-11-07 13:22:42,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e722de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:42, skipping insertion in model container [2021-11-07 13:22:42,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:32" (2/3) ... [2021-11-07 13:22:42,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e722de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:22:42, skipping insertion in model container [2021-11-07 13:22:42,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:22:42" (3/3) ... [2021-11-07 13:22:42,965 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--rtlwifi--rtl8192cu--rtl8192cu.ko-entry_point.cil.out.i [2021-11-07 13:22:42,971 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 13:22:42,971 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 13:22:43,082 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 13:22:43,091 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 13:22:43,092 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 13:22:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 14854 states, 14811 states have (on average 1.5042873539936534) internal successors, (22280), 14813 states have internal predecessors, (22280), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2021-11-07 13:22:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 13:22:43,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:43,534 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, 1, 1, 1, 1, 1] [2021-11-07 13:22:43,537 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:22:43,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1219957156, now seen corresponding path program 1 times [2021-11-07 13:22:43,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:43,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822811698] [2021-11-07 13:22:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:43,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:45,381 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 13:22:45,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:45,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822811698] [2021-11-07 13:22:45,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822811698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:45,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:45,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:22:45,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179364379] [2021-11-07 13:22:45,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:45,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:45,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:45,471 INFO L87 Difference]: Start difference. First operand has 14854 states, 14811 states have (on average 1.5042873539936534) internal successors, (22280), 14813 states have internal predecessors, (22280), 38 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 13:22:47,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 13:22:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:49,098 INFO L93 Difference]: Finished difference Result 44377 states and 66813 transitions. [2021-11-07 13:22:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:49,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2021-11-07 13:22:49,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:49,276 INFO L225 Difference]: With dead ends: 44377 [2021-11-07 13:22:49,277 INFO L226 Difference]: Without dead ends: 29498 [2021-11-07 13:22:49,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:49,341 INFO L933 BasicCegarLoop]: 22352 mSDtfsCounter, 22098 mSDsluCounter, 22295 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2521.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22098 SdHoareTripleChecker+Valid, 44647 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.82ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2666.50ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:49,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22098 Valid, 44647 Invalid, 15 Unknown, 0 Unchecked, 107.82ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2666.50ms Time] [2021-11-07 13:22:49,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29498 states. [2021-11-07 13:22:50,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29498 to 29498. [2021-11-07 13:22:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29498 states, 29415 states have (on average 1.5027027027027027) internal successors, (44202), 29417 states have internal predecessors, (44202), 76 states have call successors, (76), 6 states have call predecessors, (76), 6 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2021-11-07 13:22:50,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29498 states to 29498 states and 44354 transitions. [2021-11-07 13:22:50,650 INFO L78 Accepts]: Start accepts. Automaton has 29498 states and 44354 transitions. Word has length 85 [2021-11-07 13:22:50,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:50,651 INFO L470 AbstractCegarLoop]: Abstraction has 29498 states and 44354 transitions. [2021-11-07 13:22:50,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 13:22:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 29498 states and 44354 transitions. [2021-11-07 13:22:50,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 13:22:50,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:50,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:50,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 13:22:50,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:22:50,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1519483079, now seen corresponding path program 1 times [2021-11-07 13:22:50,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:50,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914985457] [2021-11-07 13:22:50,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:50,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:52,156 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 13:22:52,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:52,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914985457] [2021-11-07 13:22:52,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914985457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:52,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:52,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 13:22:52,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318625977] [2021-11-07 13:22:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:52,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 13:22:52,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 13:22:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:22:52,160 INFO L87 Difference]: Start difference. First operand 29498 states and 44354 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 13:22:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:54,309 INFO L93 Difference]: Finished difference Result 88226 states and 132725 transitions. [2021-11-07 13:22:54,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:22:54,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 92 [2021-11-07 13:22:54,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:22:54,512 INFO L225 Difference]: With dead ends: 88226 [2021-11-07 13:22:54,513 INFO L226 Difference]: Without dead ends: 58856 [2021-11-07 13:22:54,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 274.00ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 13:22:54,587 INFO L933 BasicCegarLoop]: 22321 mSDtfsCounter, 22236 mSDsluCounter, 66755 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 576.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22236 SdHoareTripleChecker+Valid, 89076 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 121.64ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 643.64ms IncrementalHoareTripleChecker+Time [2021-11-07 13:22:54,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22236 Valid, 89076 Invalid, 23 Unknown, 0 Unchecked, 121.64ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 643.64ms Time] [2021-11-07 13:22:54,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58856 states. [2021-11-07 13:22:55,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58856 to 58856. [2021-11-07 13:22:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58856 states, 58691 states have (on average 1.503211736041301) internal successors, (88225), 58695 states have internal predecessors, (88225), 152 states have call successors, (152), 12 states have call predecessors, (152), 12 states have return successors, (152), 148 states have call predecessors, (152), 152 states have call successors, (152) [2021-11-07 13:22:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58856 states to 58856 states and 88529 transitions. [2021-11-07 13:22:56,262 INFO L78 Accepts]: Start accepts. Automaton has 58856 states and 88529 transitions. Word has length 92 [2021-11-07 13:22:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:22:56,263 INFO L470 AbstractCegarLoop]: Abstraction has 58856 states and 88529 transitions. [2021-11-07 13:22:56,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 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 13:22:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 58856 states and 88529 transitions. [2021-11-07 13:22:56,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 13:22:56,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:22:56,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 13:22:56,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 13:22:56,278 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:22:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:22:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash -643232715, now seen corresponding path program 1 times [2021-11-07 13:22:56,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:22:56,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059032902] [2021-11-07 13:22:56,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:22:56,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:22:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:22:57,333 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 13:22:57,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:22:57,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059032902] [2021-11-07 13:22:57,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059032902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:22:57,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:22:57,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:22:57,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183218501] [2021-11-07 13:22:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:22:57,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:22:57,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:22:57,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:22:57,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:22:57,336 INFO L87 Difference]: Start difference. First operand 58856 states and 88529 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 13:22:59,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:22:59,851 INFO L93 Difference]: Finished difference Result 174636 states and 262676 transitions. [2021-11-07 13:22:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 13:22:59,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2021-11-07 13:22:59,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:23:00,337 INFO L225 Difference]: With dead ends: 174636 [2021-11-07 13:23:00,337 INFO L226 Difference]: Without dead ends: 115913 [2021-11-07 13:23:00,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:23:00,461 INFO L933 BasicCegarLoop]: 22334 mSDtfsCounter, 21619 mSDsluCounter, 22098 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 540.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21619 SdHoareTripleChecker+Valid, 44432 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.69ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 596.44ms IncrementalHoareTripleChecker+Time [2021-11-07 13:23:00,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21619 Valid, 44432 Invalid, 23 Unknown, 0 Unchecked, 61.69ms Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 596.44ms Time] [2021-11-07 13:23:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115913 states. [2021-11-07 13:23:03,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115913 to 115906. [2021-11-07 13:23:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115906 states, 115577 states have (on average 1.50286821772498) internal successors, (173697), 115585 states have internal predecessors, (173697), 304 states have call successors, (304), 24 states have call predecessors, (304), 24 states have return successors, (304), 296 states have call predecessors, (304), 304 states have call successors, (304) [2021-11-07 13:23:03,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115906 states to 115906 states and 174305 transitions. [2021-11-07 13:23:03,995 INFO L78 Accepts]: Start accepts. Automaton has 115906 states and 174305 transitions. Word has length 114 [2021-11-07 13:23:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:23:03,996 INFO L470 AbstractCegarLoop]: Abstraction has 115906 states and 174305 transitions. [2021-11-07 13:23:03,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 13:23:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 115906 states and 174305 transitions. [2021-11-07 13:23:04,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-07 13:23:04,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:23:04,034 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:23:04,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 13:23:04,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:23:04,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:23:04,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2096222794, now seen corresponding path program 1 times [2021-11-07 13:23:04,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:23:04,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651347690] [2021-11-07 13:23:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:23:04,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:23:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:23:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 13:23:05,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:23:05,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651347690] [2021-11-07 13:23:05,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651347690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:23:05,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:23:05,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 13:23:05,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175927680] [2021-11-07 13:23:05,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:23:05,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 13:23:05,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:23:05,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 13:23:05,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 13:23:05,441 INFO L87 Difference]: Start difference. First operand 115906 states and 174305 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 13:23:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 13:23:13,305 INFO L93 Difference]: Finished difference Result 563333 states and 847925 transitions. [2021-11-07 13:23:13,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 13:23:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 133 [2021-11-07 13:23:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 13:23:14,800 INFO L225 Difference]: With dead ends: 563333 [2021-11-07 13:23:14,800 INFO L226 Difference]: Without dead ends: 447560 [2021-11-07 13:23:15,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 205.96ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 13:23:15,104 INFO L933 BasicCegarLoop]: 43519 mSDtfsCounter, 63270 mSDsluCounter, 64962 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1161.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63334 SdHoareTripleChecker+Valid, 108481 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 139.58ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1250.93ms IncrementalHoareTripleChecker+Time [2021-11-07 13:23:15,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63334 Valid, 108481 Invalid, 234 Unknown, 0 Unchecked, 139.58ms Time], IncrementalHoareTripleChecker [94 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1250.93ms Time] [2021-11-07 13:23:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447560 states. [2021-11-07 13:23:20,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447560 to 115914. [2021-11-07 13:23:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115914 states, 115585 states have (on average 1.5028334126400484) internal successors, (173705), 115593 states have internal predecessors, (173705), 304 states have call successors, (304), 24 states have call predecessors, (304), 24 states have return successors, (304), 296 states have call predecessors, (304), 304 states have call successors, (304) [2021-11-07 13:23:20,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115914 states to 115914 states and 174313 transitions. [2021-11-07 13:23:20,879 INFO L78 Accepts]: Start accepts. Automaton has 115914 states and 174313 transitions. Word has length 133 [2021-11-07 13:23:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 13:23:20,880 INFO L470 AbstractCegarLoop]: Abstraction has 115914 states and 174313 transitions. [2021-11-07 13:23:20,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 13:23:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 115914 states and 174313 transitions. [2021-11-07 13:23:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 13:23:20,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 13:23:20,926 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 13:23:20,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 13:23:20,926 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 13:23:20,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 13:23:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash 944930836, now seen corresponding path program 1 times [2021-11-07 13:23:20,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 13:23:20,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432607762] [2021-11-07 13:23:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 13:23:20,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 13:23:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 13:23:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 13:23:22,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 13:23:22,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432607762] [2021-11-07 13:23:22,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432607762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 13:23:22,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 13:23:22,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 13:23:22,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126715492] [2021-11-07 13:23:22,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 13:23:22,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 13:23:22,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 13:23:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 13:23:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 13:23:22,689 INFO L87 Difference]: Start difference. First operand 115914 states and 174313 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 13:23:25,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []