./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 75d6ecf4631f26c7ec13db22e2a2052220f525ba1ac7420b6414b057d6abb772 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:43:49,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:43:49,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:43:49,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:43:49,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:43:49,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:43:49,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:43:49,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:43:49,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:43:49,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:43:49,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:43:49,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:43:49,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:43:49,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:43:49,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:43:49,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:43:49,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:43:49,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:43:49,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:43:49,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:43:49,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:43:49,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:43:49,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:43:49,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:43:49,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:43:49,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:43:49,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:43:49,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:43:49,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:43:49,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:43:49,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:43:49,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:43:49,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:43:49,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:43:49,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:43:49,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:43:49,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:43:49,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:43:49,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:43:49,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:43:49,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:43:49,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:43:49,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:43:49,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:43:49,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:43:49,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:43:49,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:43:49,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:43:49,771 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:43:49,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:43:49,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:43:49,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:43:49,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:43:49,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:43:49,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:43:49,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:43:49,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:43:49,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:43:49,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:43:49,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:43:49,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:43:49,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:43:49,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:43:49,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:43:49,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:43:49,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:43:49,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:43:49,774 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:43:49,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:43:49,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:43:49,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:43:49,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75d6ecf4631f26c7ec13db22e2a2052220f525ba1ac7420b6414b057d6abb772 [2021-11-07 16:43:49,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:43:50,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:43:50,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:43:50,003 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:43:50,004 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:43:50,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.i [2021-11-07 16:43:50,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25550563c/5c8159bb60ff449a864fe92cc4cb6cd5/FLAG0166f9a15 [2021-11-07 16:43:50,756 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:43:50,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.i [2021-11-07 16:43:50,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25550563c/5c8159bb60ff449a864fe92cc4cb6cd5/FLAG0166f9a15 [2021-11-07 16:43:51,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25550563c/5c8159bb60ff449a864fe92cc4cb6cd5 [2021-11-07 16:43:51,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:43:51,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:43:51,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:43:51,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:43:51,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:43:51,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:43:51" (1/1) ... [2021-11-07 16:43:51,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ad22fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:51, skipping insertion in model container [2021-11-07 16:43:51,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:43:51" (1/1) ... [2021-11-07 16:43:51,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:43:51,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:43:56,204 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.i[615371,615384] [2021-11-07 16:43:56,207 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.i[615516,615529] [2021-11-07 16:43:56,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:43:56,265 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:43:56,663 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.i[615371,615384] [2021-11-07 16:43:56,663 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-3.14/linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.i[615516,615529] [2021-11-07 16:43:56,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:43:56,888 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:43:56,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56 WrapperNode [2021-11-07 16:43:56,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:43:56,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:43:56,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:43:56,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:43:56,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:43:57,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:43:58,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:43:58,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:43:58,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:43:58,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:43:58,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:43:58,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:43:58,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:43:58,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:43:59,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:43:59,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:44:00,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:44:00,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:44:00,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:44:00,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:44:00,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:44:00,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (1/1) ... [2021-11-07 16:44:00,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:44:00,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:44:00,360 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 16:44:00,377 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 16:44:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:44:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:44:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-07 16:44:00,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-07 16:44:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:44:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:44:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:44:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure rt2500usb_set_device_state [2021-11-07 16:44:00,392 INFO L138 BoogieDeclarations]: Found implementation of procedure rt2500usb_set_device_state [2021-11-07 16:44:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:44:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:44:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:44:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:44:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:44:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:44:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:44:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:44:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure rt2500usb_init_registers [2021-11-07 16:44:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure rt2500usb_init_registers [2021-11-07 16:44:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:44:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure rt2500usb_enable_radio [2021-11-07 16:44:00,394 INFO L138 BoogieDeclarations]: Found implementation of procedure rt2500usb_enable_radio [2021-11-07 16:44:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:45:09,041 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-07 16:45:09,042 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-07 16:45:09,042 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-07 16:45:09,042 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-07 16:45:09,042 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-07 16:45:09,042 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-07 16:45:09,045 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-07 16:45:09,046 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-07 16:45:09,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:45:09,081 INFO L299 CfgBuilder]: Removed 10209 assume(true) statements. [2021-11-07 16:45:09,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:45:09 BoogieIcfgContainer [2021-11-07 16:45:09,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:45:09,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:45:09,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:45:09,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:45:09,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:43:51" (1/3) ... [2021-11-07 16:45:09,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63633951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:45:09, skipping insertion in model container [2021-11-07 16:45:09,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:43:56" (2/3) ... [2021-11-07 16:45:09,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63633951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:45:09, skipping insertion in model container [2021-11-07 16:45:09,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:45:09" (3/3) ... [2021-11-07 16:45:09,097 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-alloc-spinlock_drivers-net-wireless-rt2x00-rt2500usb.cil.i [2021-11-07 16:45:09,101 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:45:09,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 16:45:09,158 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:45:09,164 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 16:45:09,164 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 16:45:09,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 10173 states, 10151 states have (on average 1.4060683676485075) internal successors, (14273), 10160 states have internal predecessors, (14273), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-07 16:45:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-07 16:45:09,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:45:09,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:09,350 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 16:45:09,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:45:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1458685337, now seen corresponding path program 1 times [2021-11-07 16:45:09,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:45:09,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693651228] [2021-11-07 16:45:09,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:45:09,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:45:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:45:10,310 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 16:45:10,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:45:10,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693651228] [2021-11-07 16:45:10,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693651228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:45:10,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:45:10,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:45:10,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225754681] [2021-11-07 16:45:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:45:10,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:45:10,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:45:10,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:45:10,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:10,367 INFO L87 Difference]: Start difference. First operand has 10173 states, 10151 states have (on average 1.4060683676485075) internal successors, (14273), 10160 states have internal predecessors, (14273), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 16:45:12,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:45:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:45:13,191 INFO L93 Difference]: Finished difference Result 28345 states and 39935 transitions. [2021-11-07 16:45:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:45:13,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 307 [2021-11-07 16:45:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:45:13,281 INFO L225 Difference]: With dead ends: 28345 [2021-11-07 16:45:13,282 INFO L226 Difference]: Without dead ends: 18400 [2021-11-07 16:45:13,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:13,319 INFO L933 BasicCegarLoop]: 14229 mSDtfsCounter, 12107 mSDsluCounter, 14182 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2176.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12107 SdHoareTripleChecker+Valid, 28411 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.28ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2358.26ms IncrementalHoareTripleChecker+Time [2021-11-07 16:45:13,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12107 Valid, 28411 Invalid, 66 Unknown, 0 Unchecked, 45.28ms Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 2358.26ms Time] [2021-11-07 16:45:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18400 states. [2021-11-07 16:45:13,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18400 to 18378. [2021-11-07 16:45:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18378 states, 18344 states have (on average 1.3957697339729611) internal successors, (25604), 18353 states have internal predecessors, (25604), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-07 16:45:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18378 states to 18378 states and 25636 transitions. [2021-11-07 16:45:13,861 INFO L78 Accepts]: Start accepts. Automaton has 18378 states and 25636 transitions. Word has length 307 [2021-11-07 16:45:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:45:13,862 INFO L470 AbstractCegarLoop]: Abstraction has 18378 states and 25636 transitions. [2021-11-07 16:45:13,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 16:45:13,863 INFO L276 IsEmpty]: Start isEmpty. Operand 18378 states and 25636 transitions. [2021-11-07 16:45:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-07 16:45:13,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:45:13,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:13,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:45:13,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 16:45:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:45:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1307081468, now seen corresponding path program 1 times [2021-11-07 16:45:13,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:45:13,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215183974] [2021-11-07 16:45:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:45:13,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:45:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:45:14,844 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 16:45:14,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:45:14,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215183974] [2021-11-07 16:45:14,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215183974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:45:14,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:45:14,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:45:14,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296005808] [2021-11-07 16:45:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:45:14,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:45:14,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:45:14,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:45:14,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:14,851 INFO L87 Difference]: Start difference. First operand 18378 states and 25636 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 16:45:16,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:45:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:45:18,134 INFO L93 Difference]: Finished difference Result 47346 states and 66286 transitions. [2021-11-07 16:45:18,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:45:18,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 309 [2021-11-07 16:45:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:45:18,242 INFO L225 Difference]: With dead ends: 47346 [2021-11-07 16:45:18,242 INFO L226 Difference]: Without dead ends: 29468 [2021-11-07 16:45:18,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.91ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:18,286 INFO L933 BasicCegarLoop]: 13656 mSDtfsCounter, 12071 mSDsluCounter, 9915 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2504.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12071 SdHoareTripleChecker+Valid, 23571 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.02ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2735.64ms IncrementalHoareTripleChecker+Time [2021-11-07 16:45:18,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12071 Valid, 23571 Invalid, 284 Unknown, 0 Unchecked, 30.02ms Time], IncrementalHoareTripleChecker [56 Valid, 227 Invalid, 1 Unknown, 0 Unchecked, 2735.64ms Time] [2021-11-07 16:45:18,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29468 states. [2021-11-07 16:45:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29468 to 29444. [2021-11-07 16:45:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29444 states, 29390 states have (on average 1.39891119428377) internal successors, (41114), 29399 states have internal predecessors, (41114), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 16:45:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29444 states to 29444 states and 41170 transitions. [2021-11-07 16:45:18,967 INFO L78 Accepts]: Start accepts. Automaton has 29444 states and 41170 transitions. Word has length 309 [2021-11-07 16:45:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:45:18,968 INFO L470 AbstractCegarLoop]: Abstraction has 29444 states and 41170 transitions. [2021-11-07 16:45:18,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 16:45:18,969 INFO L276 IsEmpty]: Start isEmpty. Operand 29444 states and 41170 transitions. [2021-11-07 16:45:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-07 16:45:19,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:45:19,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:19,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:45:19,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 16:45:19,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:45:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1292227686, now seen corresponding path program 1 times [2021-11-07 16:45:19,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:45:19,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079368890] [2021-11-07 16:45:19,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:45:19,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:45:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:45:19,442 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 16:45:19,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:45:19,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079368890] [2021-11-07 16:45:19,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079368890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:45:19,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:45:19,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:45:19,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565558776] [2021-11-07 16:45:19,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:45:19,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:45:19,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:45:19,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:45:19,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:19,448 INFO L87 Difference]: Start difference. First operand 29444 states and 41170 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 16:45:21,531 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:45:22,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:45:22,887 INFO L93 Difference]: Finished difference Result 70834 states and 99356 transitions. [2021-11-07 16:45:22,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:45:22,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 310 [2021-11-07 16:45:22,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:45:22,994 INFO L225 Difference]: With dead ends: 70834 [2021-11-07 16:45:22,995 INFO L226 Difference]: Without dead ends: 41890 [2021-11-07 16:45:23,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:23,050 INFO L933 BasicCegarLoop]: 14713 mSDtfsCounter, 12071 mSDsluCounter, 9982 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2401.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12071 SdHoareTripleChecker+Valid, 24695 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.10ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2618.85ms IncrementalHoareTripleChecker+Time [2021-11-07 16:45:23,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12071 Valid, 24695 Invalid, 284 Unknown, 0 Unchecked, 23.10ms Time], IncrementalHoareTripleChecker [56 Valid, 227 Invalid, 1 Unknown, 0 Unchecked, 2618.85ms Time] [2021-11-07 16:45:23,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41890 states. [2021-11-07 16:45:23,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41890 to 41862. [2021-11-07 16:45:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41862 states, 41788 states have (on average 1.402268593854695) internal successors, (58598), 41797 states have internal predecessors, (58598), 40 states have call successors, (40), 24 states have call predecessors, (40), 24 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-07 16:45:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41862 states to 41862 states and 58678 transitions. [2021-11-07 16:45:24,065 INFO L78 Accepts]: Start accepts. Automaton has 41862 states and 58678 transitions. Word has length 310 [2021-11-07 16:45:24,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:45:24,065 INFO L470 AbstractCegarLoop]: Abstraction has 41862 states and 58678 transitions. [2021-11-07 16:45:24,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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 16:45:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 41862 states and 58678 transitions. [2021-11-07 16:45:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-07 16:45:24,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:45:24,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:24,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:45:24,126 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 16:45:24,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:45:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1803570226, now seen corresponding path program 1 times [2021-11-07 16:45:24,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:45:24,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660725261] [2021-11-07 16:45:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:45:24,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:45:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:45:24,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:45:24,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:45:24,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660725261] [2021-11-07 16:45:24,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660725261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:45:24,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:45:24,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:45:24,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178978071] [2021-11-07 16:45:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:45:24,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:45:24,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:45:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:45:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:24,504 INFO L87 Difference]: Start difference. First operand 41862 states and 58678 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 16:45:26,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:45:27,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:45:27,812 INFO L93 Difference]: Finished difference Result 124546 states and 174870 transitions. [2021-11-07 16:45:27,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:45:27,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 321 [2021-11-07 16:45:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:45:28,020 INFO L225 Difference]: With dead ends: 124546 [2021-11-07 16:45:28,021 INFO L226 Difference]: Without dead ends: 83184 [2021-11-07 16:45:28,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.27ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:28,116 INFO L933 BasicCegarLoop]: 13753 mSDtfsCounter, 13166 mSDsluCounter, 13737 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2094.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13166 SdHoareTripleChecker+Valid, 27490 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.50ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2236.54ms IncrementalHoareTripleChecker+Time [2021-11-07 16:45:28,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13166 Valid, 27490 Invalid, 19 Unknown, 0 Unchecked, 22.50ms Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2236.54ms Time] [2021-11-07 16:45:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83184 states. [2021-11-07 16:45:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83184 to 83132. [2021-11-07 16:45:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83132 states, 82994 states have (on average 1.404053305058197) internal successors, (116528), 83003 states have internal predecessors, (116528), 80 states have call successors, (80), 48 states have call predecessors, (80), 48 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-07 16:45:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83132 states to 83132 states and 116688 transitions. [2021-11-07 16:45:30,520 INFO L78 Accepts]: Start accepts. Automaton has 83132 states and 116688 transitions. Word has length 321 [2021-11-07 16:45:30,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:45:30,521 INFO L470 AbstractCegarLoop]: Abstraction has 83132 states and 116688 transitions. [2021-11-07 16:45:30,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 16:45:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 83132 states and 116688 transitions. [2021-11-07 16:45:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-07 16:45:30,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:45:30,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:30,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:45:30,604 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 16:45:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:45:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2146189922, now seen corresponding path program 1 times [2021-11-07 16:45:30,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:45:30,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178250861] [2021-11-07 16:45:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:45:30,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:45:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:45:31,129 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 16:45:31,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:45:31,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178250861] [2021-11-07 16:45:31,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178250861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:45:31,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:45:31,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:45:31,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20004623] [2021-11-07 16:45:31,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:45:31,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:45:31,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:45:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:45:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:31,134 INFO L87 Difference]: Start difference. First operand 83132 states and 116688 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 16:45:33,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:45:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:45:35,655 INFO L93 Difference]: Finished difference Result 206842 states and 290598 transitions. [2021-11-07 16:45:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:45:35,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 322 [2021-11-07 16:45:35,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:45:35,959 INFO L225 Difference]: With dead ends: 206842 [2021-11-07 16:45:35,959 INFO L226 Difference]: Without dead ends: 124210 [2021-11-07 16:45:36,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:36,087 INFO L933 BasicCegarLoop]: 13751 mSDtfsCounter, 13148 mSDsluCounter, 13707 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2120.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13148 SdHoareTripleChecker+Valid, 27458 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.81ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2299.96ms IncrementalHoareTripleChecker+Time [2021-11-07 16:45:36,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13148 Valid, 27458 Invalid, 28 Unknown, 0 Unchecked, 22.81ms Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 1 Unknown, 0 Unchecked, 2299.96ms Time] [2021-11-07 16:45:36,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124210 states. [2021-11-07 16:45:38,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124210 to 124190. [2021-11-07 16:45:38,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124190 states, 123988 states have (on average 1.4048940220021293) internal successors, (174190), 123997 states have internal predecessors, (174190), 120 states have call successors, (120), 72 states have call predecessors, (120), 72 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-11-07 16:45:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124190 states to 124190 states and 174430 transitions. [2021-11-07 16:45:39,088 INFO L78 Accepts]: Start accepts. Automaton has 124190 states and 174430 transitions. Word has length 322 [2021-11-07 16:45:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:45:39,088 INFO L470 AbstractCegarLoop]: Abstraction has 124190 states and 174430 transitions. [2021-11-07 16:45:39,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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 16:45:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 124190 states and 174430 transitions. [2021-11-07 16:45:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-07 16:45:39,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:45:39,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:39,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:45:39,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 16:45:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:45:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash 640800545, now seen corresponding path program 1 times [2021-11-07 16:45:39,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:45:39,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883959245] [2021-11-07 16:45:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:45:39,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:45:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:45:39,782 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 16:45:39,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:45:39,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883959245] [2021-11-07 16:45:39,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883959245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:45:39,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:45:39,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:45:39,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171383340] [2021-11-07 16:45:39,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:45:39,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:45:39,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:45:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:45:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:39,785 INFO L87 Difference]: Start difference. First operand 124190 states and 174430 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 16:45:41,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:45:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:45:44,362 INFO L93 Difference]: Finished difference Result 224806 states and 315410 transitions. [2021-11-07 16:45:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:45:44,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 328 [2021-11-07 16:45:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:45:44,608 INFO L225 Difference]: With dead ends: 224806 [2021-11-07 16:45:44,608 INFO L226 Difference]: Without dead ends: 101116 [2021-11-07 16:45:44,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.30ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:44,747 INFO L933 BasicCegarLoop]: 13741 mSDtfsCounter, 8323 mSDsluCounter, 13575 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2272.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8323 SdHoareTripleChecker+Valid, 27316 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.40ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2454.46ms IncrementalHoareTripleChecker+Time [2021-11-07 16:45:44,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8323 Valid, 27316 Invalid, 188 Unknown, 0 Unchecked, 19.40ms Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 2454.46ms Time] [2021-11-07 16:45:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101116 states. [2021-11-07 16:45:46,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101116 to 101080. [2021-11-07 16:45:46,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101080 states, 100890 states have (on average 1.400376647834275) internal successors, (141284), 100899 states have internal predecessors, (141284), 108 states have call successors, (108), 72 states have call predecessors, (108), 72 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-07 16:45:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101080 states to 101080 states and 141500 transitions. [2021-11-07 16:45:47,095 INFO L78 Accepts]: Start accepts. Automaton has 101080 states and 141500 transitions. Word has length 328 [2021-11-07 16:45:47,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:45:47,095 INFO L470 AbstractCegarLoop]: Abstraction has 101080 states and 141500 transitions. [2021-11-07 16:45:47,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 16:45:47,096 INFO L276 IsEmpty]: Start isEmpty. Operand 101080 states and 141500 transitions. [2021-11-07 16:45:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-07 16:45:47,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:45:47,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:47,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:45:47,170 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 16:45:47,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:45:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1385734957, now seen corresponding path program 1 times [2021-11-07 16:45:47,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:45:47,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228178804] [2021-11-07 16:45:47,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:45:47,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:45:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:45:47,748 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 16:45:47,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:45:47,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228178804] [2021-11-07 16:45:47,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228178804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:45:47,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:45:47,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:45:47,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332666707] [2021-11-07 16:45:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:45:47,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:45:47,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:45:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:45:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:47,750 INFO L87 Difference]: Start difference. First operand 101080 states and 141500 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 16:45:49,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:45:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:45:51,918 INFO L93 Difference]: Finished difference Result 190368 states and 266358 transitions. [2021-11-07 16:45:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:45:51,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 329 [2021-11-07 16:45:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:45:52,111 INFO L225 Difference]: With dead ends: 190368 [2021-11-07 16:45:52,111 INFO L226 Difference]: Without dead ends: 89788 [2021-11-07 16:45:52,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:45:52,237 INFO L933 BasicCegarLoop]: 20736 mSDtfsCounter, 8389 mSDsluCounter, 13576 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2225.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8389 SdHoareTripleChecker+Valid, 34312 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.65ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2391.64ms IncrementalHoareTripleChecker+Time [2021-11-07 16:45:52,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8389 Valid, 34312 Invalid, 188 Unknown, 0 Unchecked, 20.65ms Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 2391.64ms Time] [2021-11-07 16:45:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89788 states.