./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 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--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-dev-173e394 [2021-11-06 14:47:25,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:47:25,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:47:25,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:47:25,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:47:25,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:47:25,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:47:25,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:47:25,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:47:25,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:47:25,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:47:25,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:47:25,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:47:25,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:47:25,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:47:25,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:47:25,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:47:25,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:47:25,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:47:25,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:47:25,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:47:25,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:47:25,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:47:25,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:47:25,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:47:25,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:47:25,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:47:25,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:47:25,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:47:25,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:47:25,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:47:25,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:47:25,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:47:25,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:47:25,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:47:25,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:47:25,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:47:25,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:47:25,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:47:25,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:47:25,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:47:25,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:47:25,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:47:25,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:47:25,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:47:25,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:47:25,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:47:25,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:47:25,672 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:47:25,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:47:25,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:47:25,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:47:25,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:47:25,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:47:25,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:47:25,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:47:25,673 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:47:25,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:47:25,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:47:25,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:47:25,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:47:25,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:47:25,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:47:25,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:47:25,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:47:25,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:47:25,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:47:25,675 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:47:25,677 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:47:25,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:47:25,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:47:25,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3eedf009c0354e40f9e91d5f02bdbd29fc69486fea85bd401e2764ccaedb5c6 [2021-11-06 14:47:25,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:47:25,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:47:25,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:47:25,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:47:25,839 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:47:25,839 INFO L432 ainManager$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 [2021-11-06 14:47:25,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5838f5dc7/6762f335ba9d4c68b6ae7b012cd8b0e4/FLAG2d65f0612 [2021-11-06 14:47:26,517 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:47:26,517 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 [2021-11-06 14:47:26,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5838f5dc7/6762f335ba9d4c68b6ae7b012cd8b0e4/FLAG2d65f0612 [2021-11-06 14:47:26,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5838f5dc7/6762f335ba9d4c68b6ae7b012cd8b0e4 [2021-11-06 14:47:26,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:47:26,626 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:47:26,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:47:26,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:47:26,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:47:26,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:47:26" (1/1) ... [2021-11-06 14:47:26,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318e27d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:26, skipping insertion in model container [2021-11-06 14:47:26,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:47:26" (1/1) ... [2021-11-06 14:47:26,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:47:26,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:47:27,537 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] [2021-11-06 14:47:29,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:47:30,114 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:47:30,223 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] [2021-11-06 14:47:30,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:47:30,674 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:47:30,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30 WrapperNode [2021-11-06 14:47:30,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:47:30,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:47:30,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:47:30,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:47:30,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:30,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:32,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:47:32,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:47:32,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:47:32,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:47:32,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:32,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:32,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:32,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:33,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:33,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:34,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:34,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:47:34,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:47:34,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:47:34,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:47:34,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (1/1) ... [2021-11-06 14:47:34,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:47:34,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:47:34,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 14:47:34,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 14:47:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-06 14:47:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:47:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:47:34,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:47:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:47:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-06 14:47:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:47:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:47:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:47:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:47:34,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:47:34,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:47:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:47:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~TO~VOID [2021-11-06 14:47:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~TO~VOID [2021-11-06 14:47:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:47:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:47:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure rtl92cu_get_hw_reg [2021-11-06 14:47:34,443 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl92cu_get_hw_reg [2021-11-06 14:47:34,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:47:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:47:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure rtl92cu_set_hw_reg [2021-11-06 14:47:34,444 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl92cu_set_hw_reg [2021-11-06 14:47:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:47:34,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u8 [2021-11-06 14:50:31,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:50:31,449 INFO L299 CfgBuilder]: Removed 10707 assume(true) statements. [2021-11-06 14:50:31,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:50:31 BoogieIcfgContainer [2021-11-06 14:50:31,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:50:31,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:50:31,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:50:31,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:50:31,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:47:26" (1/3) ... [2021-11-06 14:50:31,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d4728f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:50:31, skipping insertion in model container [2021-11-06 14:50:31,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:47:30" (2/3) ... [2021-11-06 14:50:31,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d4728f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:50:31, skipping insertion in model container [2021-11-06 14:50:31,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:50:31" (3/3) ... [2021-11-06 14:50:31,463 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 [2021-11-06 14:50:31,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:50:31,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 14:50:31,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:50:31,533 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 14:50:31,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 14:50:31,908 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) [2021-11-06 14:50:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 14:50:31,915 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:31,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:31,916 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:50:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:31,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1219957156, now seen corresponding path program 1 times [2021-11-06 14:50:31,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:31,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793778272] [2021-11-06 14:50:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:31,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:50:33,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:33,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793778272] [2021-11-06 14:50:33,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793778272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:33,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:33,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:50:33,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427261632] [2021-11-06 14:50:33,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:50:33,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:50:33,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:33,347 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) [2021-11-06 14:50:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:36,626 INFO L93 Difference]: Finished difference Result 44377 states and 66813 transitions. [2021-11-06 14:50:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:50:36,627 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 [2021-11-06 14:50:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:36,751 INFO L225 Difference]: With dead ends: 44377 [2021-11-06 14:50:36,751 INFO L226 Difference]: Without dead ends: 29498 [2021-11-06 14:50:36,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:36,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29498 states. [2021-11-06 14:50:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29498 to 29498. [2021-11-06 14:50:37,407 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) [2021-11-06 14:50:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29498 states to 29498 states and 44354 transitions. [2021-11-06 14:50:37,490 INFO L78 Accepts]: Start accepts. Automaton has 29498 states and 44354 transitions. Word has length 85 [2021-11-06 14:50:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:37,491 INFO L470 AbstractCegarLoop]: Abstraction has 29498 states and 44354 transitions. [2021-11-06 14:50:37,492 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) [2021-11-06 14:50:37,492 INFO L276 IsEmpty]: Start isEmpty. Operand 29498 states and 44354 transitions. [2021-11-06 14:50:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 14:50:37,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:37,499 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:37,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:50:37,499 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:50:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1519483079, now seen corresponding path program 1 times [2021-11-06 14:50:37,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:37,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296812528] [2021-11-06 14:50:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:37,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:50:38,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:38,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296812528] [2021-11-06 14:50:38,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296812528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:38,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:38,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:50:38,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502915476] [2021-11-06 14:50:38,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:50:38,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:50:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:50:38,458 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) [2021-11-06 14:50:39,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:39,942 INFO L93 Difference]: Finished difference Result 88226 states and 132725 transitions. [2021-11-06 14:50:39,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:50:39,943 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 [2021-11-06 14:50:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:40,089 INFO L225 Difference]: With dead ends: 88226 [2021-11-06 14:50:40,091 INFO L226 Difference]: Without dead ends: 58856 [2021-11-06 14:50:40,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:50:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58856 states. [2021-11-06 14:50:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58856 to 58856. [2021-11-06 14:50:41,314 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) [2021-11-06 14:50:41,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58856 states to 58856 states and 88529 transitions. [2021-11-06 14:50:41,455 INFO L78 Accepts]: Start accepts. Automaton has 58856 states and 88529 transitions. Word has length 92 [2021-11-06 14:50:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:41,461 INFO L470 AbstractCegarLoop]: Abstraction has 58856 states and 88529 transitions. [2021-11-06 14:50:41,461 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) [2021-11-06 14:50:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 58856 states and 88529 transitions. [2021-11-06 14:50:41,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-06 14:50:41,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:41,475 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:50:41,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:50:41,476 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:50:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:41,481 INFO L85 PathProgramCache]: Analyzing trace with hash -643232715, now seen corresponding path program 1 times [2021-11-06 14:50:41,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:41,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771534017] [2021-11-06 14:50:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:41,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:50:42,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:42,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771534017] [2021-11-06 14:50:42,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771534017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:42,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:42,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:50:42,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173126456] [2021-11-06 14:50:42,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:50:42,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:50:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:42,527 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) [2021-11-06 14:50:44,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:44,305 INFO L93 Difference]: Finished difference Result 174636 states and 262676 transitions. [2021-11-06 14:50:44,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:50:44,306 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 [2021-11-06 14:50:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:44,632 INFO L225 Difference]: With dead ends: 174636 [2021-11-06 14:50:44,632 INFO L226 Difference]: Without dead ends: 115913 [2021-11-06 14:50:44,716 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:50:44,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115913 states. [2021-11-06 14:50:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115913 to 115906. [2021-11-06 14:50:47,128 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) [2021-11-06 14:50:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115906 states to 115906 states and 174305 transitions. [2021-11-06 14:50:47,406 INFO L78 Accepts]: Start accepts. Automaton has 115906 states and 174305 transitions. Word has length 114 [2021-11-06 14:50:47,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:50:47,407 INFO L470 AbstractCegarLoop]: Abstraction has 115906 states and 174305 transitions. [2021-11-06 14:50:47,407 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) [2021-11-06 14:50:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 115906 states and 174305 transitions. [2021-11-06 14:50:47,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-06 14:50:47,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:50:47,444 INFO L513 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] [2021-11-06 14:50:47,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:50:47,444 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:50:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:50:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2096222794, now seen corresponding path program 1 times [2021-11-06 14:50:47,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:50:47,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389682311] [2021-11-06 14:50:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:50:47,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:50:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:50:48,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:50:48,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:50:48,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389682311] [2021-11-06 14:50:48,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389682311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:50:48,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:50:48,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:50:48,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697712771] [2021-11-06 14:50:48,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:50:48,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:50:48,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:50:48,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:50:48,515 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) [2021-11-06 14:50:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:50:55,398 INFO L93 Difference]: Finished difference Result 563333 states and 847925 transitions. [2021-11-06 14:50:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:50:55,399 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 [2021-11-06 14:50:55,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:50:57,221 INFO L225 Difference]: With dead ends: 563333 [2021-11-06 14:50:57,222 INFO L226 Difference]: Without dead ends: 447560 [2021-11-06 14:50:57,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:50:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447560 states. [2021-11-06 14:51:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447560 to 115914. [2021-11-06 14:51:02,101 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) [2021-11-06 14:51:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115914 states to 115914 states and 174313 transitions. [2021-11-06 14:51:02,619 INFO L78 Accepts]: Start accepts. Automaton has 115914 states and 174313 transitions. Word has length 133 [2021-11-06 14:51:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:51:02,621 INFO L470 AbstractCegarLoop]: Abstraction has 115914 states and 174313 transitions. [2021-11-06 14:51:02,621 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) [2021-11-06 14:51:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 115914 states and 174313 transitions. [2021-11-06 14:51:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-06 14:51:02,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:51:02,702 INFO L513 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] [2021-11-06 14:51:02,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:51:02,702 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 14:51:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:51:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash 944930836, now seen corresponding path program 1 times [2021-11-06 14:51:02,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:51:02,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143557469] [2021-11-06 14:51:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:51:02,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:51:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:51:03,801 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 14:51:03,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:51:03,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143557469] [2021-11-06 14:51:03,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143557469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:51:03,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:51:03,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:51:03,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719055261] [2021-11-06 14:51:03,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:51:03,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:51:03,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:51:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:51:03,802 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)