./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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-kernel-locking-mutex_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 2780fc0b078cd95366c58e63c05c4168e73cfd193d5f7dd189d6eaa3d38deb42 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 20:30:28,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 20:30:28,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 20:30:28,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 20:30:28,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 20:30:28,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 20:30:28,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 20:30:28,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 20:30:28,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 20:30:28,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 20:30:28,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 20:30:28,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 20:30:28,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 20:30:28,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 20:30:28,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 20:30:28,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 20:30:28,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 20:30:28,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 20:30:28,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 20:30:28,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 20:30:28,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 20:30:28,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 20:30:28,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 20:30:28,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 20:30:28,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 20:30:28,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 20:30:28,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 20:30:28,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 20:30:28,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 20:30:28,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 20:30:28,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 20:30:28,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 20:30:28,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 20:30:28,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 20:30:28,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 20:30:28,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 20:30:28,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 20:30:28,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 20:30:28,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 20:30:28,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 20:30:28,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 20:30:28,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 20:30:28,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 20:30:28,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 20:30:28,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 20:30:28,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 20:30:28,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 20:30:28,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 20:30:28,405 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 20:30:28,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 20:30:28,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 20:30:28,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 20:30:28,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 20:30:28,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 20:30:28,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 20:30:28,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 20:30:28,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 20:30:28,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 20:30:28,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 20:30:28,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 20:30:28,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 20:30:28,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:30:28,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 20:30:28,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 20:30:28,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 20:30:28,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 20:30:28,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 20:30:28,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 20:30:28,408 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 20:30:28,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 20:30:28,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 20:30:28,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2780fc0b078cd95366c58e63c05c4168e73cfd193d5f7dd189d6eaa3d38deb42 [2021-11-05 20:30:28,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 20:30:28,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 20:30:28,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 20:30:28,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 20:30:28,727 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 20:30:28,728 INFO L432 ainManager$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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i [2021-11-05 20:30:28,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d704ec12f/627a49169d95436ba5599589fc4dfcbc/FLAGecfb3ccf9 [2021-11-05 20:30:29,605 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 20:30:29,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i [2021-11-05 20:30:29,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d704ec12f/627a49169d95436ba5599589fc4dfcbc/FLAGecfb3ccf9 [2021-11-05 20:30:29,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d704ec12f/627a49169d95436ba5599589fc4dfcbc [2021-11-05 20:30:29,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 20:30:29,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 20:30:29,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 20:30:29,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 20:30:29,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 20:30:29,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:30:29" (1/1) ... [2021-11-05 20:30:29,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6feee621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:29, skipping insertion in model container [2021-11-05 20:30:29,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:30:29" (1/1) ... [2021-11-05 20:30:29,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 20:30:29,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 20:30:34,301 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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i[595361,595374] [2021-11-05 20:30:34,304 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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i[595527,595540] [2021-11-05 20:30:34,304 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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i[595691,595704] [2021-11-05 20:30:34,305 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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i[595856,595869] [2021-11-05 20:30:34,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:30:34,358 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 20:30:34,716 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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i[595361,595374] [2021-11-05 20:30:34,717 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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i[595527,595540] [2021-11-05 20:30:34,717 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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i[595691,595704] [2021-11-05 20:30:34,717 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-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i[595856,595869] [2021-11-05 20:30:34,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 20:30:34,921 INFO L208 MainTranslator]: Completed translation [2021-11-05 20:30:34,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34 WrapperNode [2021-11-05 20:30:34,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 20:30:34,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 20:30:34,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 20:30:34,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 20:30:34,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:35,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:36,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 20:30:36,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 20:30:36,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 20:30:36,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 20:30:36,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:36,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:36,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:36,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:37,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:38,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:38,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:38,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 20:30:38,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 20:30:38,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 20:30:38,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 20:30:38,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (1/1) ... [2021-11-05 20:30:38,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 20:30:38,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 20:30:38,845 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) [2021-11-05 20:30:38,880 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 [2021-11-05 20:30:38,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 20:30:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 20:30:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-05 20:30:38,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-05 20:30:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 20:30:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 20:30:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 20:30:38,906 INFO L130 BoogieDeclarations]: Found specification of procedure rt2500usb_set_device_state [2021-11-05 20:30:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rt2500usb_set_device_state [2021-11-05 20:30:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 20:30:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 20:30:38,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 20:30:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 20:30:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 20:30:38,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 20:30:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 20:30:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 20:30:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure rt2500usb_init_registers [2021-11-05 20:30:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure rt2500usb_init_registers [2021-11-05 20:30:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 20:30:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure rt2500usb_enable_radio [2021-11-05 20:30:38,909 INFO L138 BoogieDeclarations]: Found implementation of procedure rt2500usb_enable_radio [2021-11-05 20:30:38,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 20:31:54,255 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-05 20:31:54,256 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#3: ldv_switch_0_#res := 0; [2021-11-05 20:31:54,256 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#4: ldv_switch_0_#res := 0; [2021-11-05 20:31:54,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#5: ldv_switch_0_#res := 0; [2021-11-05 20:31:54,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#6: ldv_switch_0_#res := 0; [2021-11-05 20:31:54,257 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-05 20:31:54,258 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-05 20:31:54,259 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-05 20:31:54,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 20:31:54,300 INFO L299 CfgBuilder]: Removed 10683 assume(true) statements. [2021-11-05 20:31:54,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:31:54 BoogieIcfgContainer [2021-11-05 20:31:54,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 20:31:54,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 20:31:54,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 20:31:54,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 20:31:54,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:30:29" (1/3) ... [2021-11-05 20:31:54,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153f6d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:31:54, skipping insertion in model container [2021-11-05 20:31:54,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:30:34" (2/3) ... [2021-11-05 20:31:54,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153f6d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:31:54, skipping insertion in model container [2021-11-05 20:31:54,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:31:54" (3/3) ... [2021-11-05 20:31:54,316 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-wireless-rt2x00-rt2500usb.cil.i [2021-11-05 20:31:54,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 20:31:54,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 156 error locations. [2021-11-05 20:31:54,381 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 20:31:54,386 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 [2021-11-05 20:31:54,386 INFO L340 AbstractCegarLoop]: Starting to check reachability of 156 error locations. [2021-11-05 20:31:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 10602 states, 10434 states have (on average 1.4123059229442207) internal successors, (14736), 10589 states have internal predecessors, (14736), 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) [2021-11-05 20:31:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-05 20:31:54,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:31:54,506 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] [2021-11-05 20:31:54,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:31:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:31:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1921148247, now seen corresponding path program 1 times [2021-11-05 20:31:54,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:31:54,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136857173] [2021-11-05 20:31:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:31:54,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:31:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:31:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:31:55,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:31:55,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136857173] [2021-11-05 20:31:55,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136857173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:31:55,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:31:55,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:31:55,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815369245] [2021-11-05 20:31:55,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:31:55,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:31:55,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:31:55,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:31:55,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:31:55,405 INFO L87 Difference]: Start difference. First operand has 10602 states, 10434 states have (on average 1.4123059229442207) internal successors, (14736), 10589 states have internal predecessors, (14736), 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 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2021-11-05 20:31:57,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:31:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:31:58,099 INFO L93 Difference]: Finished difference Result 30441 states and 42507 transitions. [2021-11-05 20:31:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:31:58,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 204 [2021-11-05 20:31:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:31:58,169 INFO L225 Difference]: With dead ends: 30441 [2021-11-05 20:31:58,170 INFO L226 Difference]: Without dead ends: 20161 [2021-11-05 20:31:58,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:31:58,202 INFO L933 BasicCegarLoop]: 14555 mSDtfsCounter, 13634 mSDsluCounter, 14498 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2093.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13634 SdHoareTripleChecker+Valid, 29053 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.61ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2245.51ms IncrementalHoareTripleChecker+Time [2021-11-05 20:31:58,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13634 Valid, 29053 Invalid, 34 Unknown, 0 Unchecked, 45.61ms Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2245.51ms Time] [2021-11-05 20:31:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20161 states. [2021-11-05 20:31:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20161 to 19873. [2021-11-05 20:31:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19873 states, 19693 states have (on average 1.3904433047275682) internal successors, (27382), 19848 states have internal predecessors, (27382), 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) [2021-11-05 20:31:58,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19873 states to 19873 states and 27414 transitions. [2021-11-05 20:31:58,958 INFO L78 Accepts]: Start accepts. Automaton has 19873 states and 27414 transitions. Word has length 204 [2021-11-05 20:31:58,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:31:58,963 INFO L470 AbstractCegarLoop]: Abstraction has 19873 states and 27414 transitions. [2021-11-05 20:31:58,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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) [2021-11-05 20:31:58,964 INFO L276 IsEmpty]: Start isEmpty. Operand 19873 states and 27414 transitions. [2021-11-05 20:31:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-05 20:31:58,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:31:58,969 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] [2021-11-05 20:31:58,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 20:31:58,970 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:31:58,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:31:58,971 INFO L85 PathProgramCache]: Analyzing trace with hash -643378217, now seen corresponding path program 1 times [2021-11-05 20:31:58,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:31:58,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967290119] [2021-11-05 20:31:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:31:58,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:31:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:31:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:31:59,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:31:59,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967290119] [2021-11-05 20:31:59,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967290119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:31:59,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:31:59,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:31:59,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984232158] [2021-11-05 20:31:59,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:31:59,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:31:59,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:31:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:31:59,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:31:59,272 INFO L87 Difference]: Start difference. First operand 19873 states and 27414 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2021-11-05 20:32:01,334 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:32:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:32:02,220 INFO L93 Difference]: Finished difference Result 42153 states and 58106 transitions. [2021-11-05 20:32:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:32:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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 221 [2021-11-05 20:32:02,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:32:02,280 INFO L225 Difference]: With dead ends: 42153 [2021-11-05 20:32:02,281 INFO L226 Difference]: Without dead ends: 22780 [2021-11-05 20:32:02,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:02,321 INFO L933 BasicCegarLoop]: 16131 mSDtfsCounter, 8645 mSDsluCounter, 13939 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2224.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8645 SdHoareTripleChecker+Valid, 30070 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.68ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2397.82ms IncrementalHoareTripleChecker+Time [2021-11-05 20:32:02,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8645 Valid, 30070 Invalid, 200 Unknown, 0 Unchecked, 38.68ms Time], IncrementalHoareTripleChecker [15 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 2397.82ms Time] [2021-11-05 20:32:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22780 states. [2021-11-05 20:32:02,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22780 to 22500. [2021-11-05 20:32:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22500 states, 22312 states have (on average 1.3901487988526353) internal successors, (31017), 22467 states have internal predecessors, (31017), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-05 20:32:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22500 states to 22500 states and 31057 transitions. [2021-11-05 20:32:02,822 INFO L78 Accepts]: Start accepts. Automaton has 22500 states and 31057 transitions. Word has length 221 [2021-11-05 20:32:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:32:02,823 INFO L470 AbstractCegarLoop]: Abstraction has 22500 states and 31057 transitions. [2021-11-05 20:32:02,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 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) [2021-11-05 20:32:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 22500 states and 31057 transitions. [2021-11-05 20:32:02,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-05 20:32:02,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:32:02,826 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] [2021-11-05 20:32:02,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 20:32:02,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:32:02,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:32:02,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1231122208, now seen corresponding path program 1 times [2021-11-05 20:32:02,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:32:02,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857179177] [2021-11-05 20:32:02,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:32:02,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:32:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:32:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:32:03,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:32:03,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857179177] [2021-11-05 20:32:03,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857179177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:32:03,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:32:03,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:32:03,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181029703] [2021-11-05 20:32:03,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:32:03,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:32:03,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:32:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:32:03,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:03,262 INFO L87 Difference]: Start difference. First operand 22500 states and 31057 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2021-11-05 20:32:05,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:32:05,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:32:05,811 INFO L93 Difference]: Finished difference Result 46799 states and 64558 transitions. [2021-11-05 20:32:05,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:32:05,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 222 [2021-11-05 20:32:05,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:32:05,867 INFO L225 Difference]: With dead ends: 46799 [2021-11-05 20:32:05,868 INFO L226 Difference]: Without dead ends: 24799 [2021-11-05 20:32:05,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.93ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:05,906 INFO L933 BasicCegarLoop]: 21406 mSDtfsCounter, 8719 mSDsluCounter, 13940 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1912.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8719 SdHoareTripleChecker+Valid, 35346 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.21ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2130.88ms IncrementalHoareTripleChecker+Time [2021-11-05 20:32:05,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8719 Valid, 35346 Invalid, 200 Unknown, 0 Unchecked, 28.21ms Time], IncrementalHoareTripleChecker [15 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 2130.88ms Time] [2021-11-05 20:32:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24799 states. [2021-11-05 20:32:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24799 to 24513. [2021-11-05 20:32:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24513 states, 24325 states have (on average 1.3898869475847893) internal successors, (33809), 24480 states have internal predecessors, (33809), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-05 20:32:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24513 states to 24513 states and 33849 transitions. [2021-11-05 20:32:06,445 INFO L78 Accepts]: Start accepts. Automaton has 24513 states and 33849 transitions. Word has length 222 [2021-11-05 20:32:06,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:32:06,445 INFO L470 AbstractCegarLoop]: Abstraction has 24513 states and 33849 transitions. [2021-11-05 20:32:06,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2021-11-05 20:32:06,446 INFO L276 IsEmpty]: Start isEmpty. Operand 24513 states and 33849 transitions. [2021-11-05 20:32:06,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-05 20:32:06,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:32:06,449 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:32:06,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 20:32:06,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:32:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:32:06,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1729715430, now seen corresponding path program 1 times [2021-11-05 20:32:06,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:32:06,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400589950] [2021-11-05 20:32:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:32:06,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:32:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:32:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:32:06,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:32:06,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400589950] [2021-11-05 20:32:06,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400589950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:32:06,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:32:06,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:32:06,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430290206] [2021-11-05 20:32:06,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:32:06,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:32:06,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:32:06,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:32:06,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:06,696 INFO L87 Difference]: Start difference. First operand 24513 states and 33849 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2021-11-05 20:32:08,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:32:09,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:32:09,588 INFO L93 Difference]: Finished difference Result 70443 states and 97576 transitions. [2021-11-05 20:32:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:32:09,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 234 [2021-11-05 20:32:09,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:32:09,681 INFO L225 Difference]: With dead ends: 70443 [2021-11-05 20:32:09,681 INFO L226 Difference]: Without dead ends: 47382 [2021-11-05 20:32:09,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:09,714 INFO L933 BasicCegarLoop]: 27550 mSDtfsCounter, 13456 mSDsluCounter, 14075 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2077.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13456 SdHoareTripleChecker+Valid, 41625 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.35ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2245.98ms IncrementalHoareTripleChecker+Time [2021-11-05 20:32:09,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13456 Valid, 41625 Invalid, 32 Unknown, 0 Unchecked, 24.35ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2245.98ms Time] [2021-11-05 20:32:09,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47382 states. [2021-11-05 20:32:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47382 to 47073. [2021-11-05 20:32:10,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47073 states, 46853 states have (on average 1.394595863658677) internal successors, (65341), 47008 states have internal predecessors, (65341), 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) [2021-11-05 20:32:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47073 states to 47073 states and 65421 transitions. [2021-11-05 20:32:10,608 INFO L78 Accepts]: Start accepts. Automaton has 47073 states and 65421 transitions. Word has length 234 [2021-11-05 20:32:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:32:10,608 INFO L470 AbstractCegarLoop]: Abstraction has 47073 states and 65421 transitions. [2021-11-05 20:32:10,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2021-11-05 20:32:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 47073 states and 65421 transitions. [2021-11-05 20:32:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-05 20:32:10,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:32:10,612 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-05 20:32:10,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 20:32:10,612 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:32:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:32:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash -449851752, now seen corresponding path program 1 times [2021-11-05 20:32:10,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:32:10,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808952391] [2021-11-05 20:32:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:32:10,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:32:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:32:11,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:32:11,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:32:11,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808952391] [2021-11-05 20:32:11,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808952391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:32:11,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:32:11,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:32:11,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398431763] [2021-11-05 20:32:11,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:32:11,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:32:11,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:32:11,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:32:11,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:11,045 INFO L87 Difference]: Start difference. First operand 47073 states and 65421 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2021-11-05 20:32:13,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:32:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:32:14,301 INFO L93 Difference]: Finished difference Result 115559 states and 160712 transitions. [2021-11-05 20:32:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:32:14,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 234 [2021-11-05 20:32:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:32:14,535 INFO L225 Difference]: With dead ends: 115559 [2021-11-05 20:32:14,536 INFO L226 Difference]: Without dead ends: 69938 [2021-11-05 20:32:14,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.85ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:14,603 INFO L933 BasicCegarLoop]: 27550 mSDtfsCounter, 13442 mSDsluCounter, 14088 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2078.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13442 SdHoareTripleChecker+Valid, 41638 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.88ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2225.76ms IncrementalHoareTripleChecker+Time [2021-11-05 20:32:14,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13442 Valid, 41638 Invalid, 30 Unknown, 0 Unchecked, 24.88ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2225.76ms Time] [2021-11-05 20:32:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69938 states. [2021-11-05 20:32:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69938 to 69650. [2021-11-05 20:32:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69650 states, 69398 states have (on average 1.3961497449494222) internal successors, (96890), 69553 states have internal predecessors, (96890), 60 states have call successors, (60), 36 states have call predecessors, (60), 36 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2021-11-05 20:32:16,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69650 states to 69650 states and 97010 transitions. [2021-11-05 20:32:16,233 INFO L78 Accepts]: Start accepts. Automaton has 69650 states and 97010 transitions. Word has length 234 [2021-11-05 20:32:16,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:32:16,234 INFO L470 AbstractCegarLoop]: Abstraction has 69650 states and 97010 transitions. [2021-11-05 20:32:16,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2021-11-05 20:32:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 69650 states and 97010 transitions. [2021-11-05 20:32:16,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-05 20:32:16,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:32:16,237 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] [2021-11-05 20:32:16,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 20:32:16,238 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr86ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:32:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:32:16,239 INFO L85 PathProgramCache]: Analyzing trace with hash 857677723, now seen corresponding path program 1 times [2021-11-05 20:32:16,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:32:16,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079139099] [2021-11-05 20:32:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:32:16,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:32:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:32:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 20:32:16,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:32:16,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079139099] [2021-11-05 20:32:16,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079139099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:32:16,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:32:16,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 20:32:16,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997391722] [2021-11-05 20:32:16,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:32:16,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 20:32:16,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:32:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 20:32:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:16,501 INFO L87 Difference]: Start difference. First operand 69650 states and 97010 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2021-11-05 20:32:18,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 20:32:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:32:20,481 INFO L93 Difference]: Finished difference Result 196424 states and 273834 transitions. [2021-11-05 20:32:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 20:32:20,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 235 [2021-11-05 20:32:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:32:20,803 INFO L225 Difference]: With dead ends: 196424 [2021-11-05 20:32:20,803 INFO L226 Difference]: Without dead ends: 127274 [2021-11-05 20:32:20,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 20:32:20,909 INFO L933 BasicCegarLoop]: 14106 mSDtfsCounter, 12298 mSDsluCounter, 14063 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2101.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12298 SdHoareTripleChecker+Valid, 28169 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.46ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2309.94ms IncrementalHoareTripleChecker+Time [2021-11-05 20:32:20,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12298 Valid, 28169 Invalid, 66 Unknown, 0 Unchecked, 22.46ms Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 2309.94ms Time] [2021-11-05 20:32:21,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127274 states. [2021-11-05 20:32:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127274 to 126847. [2021-11-05 20:32:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126847 states, 126499 states have (on average 1.3971019533751254) internal successors, (176732), 126654 states have internal predecessors, (176732), 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) [2021-11-05 20:32:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126847 states to 126847 states and 176972 transitions. [2021-11-05 20:32:23,761 INFO L78 Accepts]: Start accepts. Automaton has 126847 states and 176972 transitions. Word has length 235 [2021-11-05 20:32:23,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:32:23,762 INFO L470 AbstractCegarLoop]: Abstraction has 126847 states and 176972 transitions. [2021-11-05 20:32:23,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2021-11-05 20:32:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 126847 states and 176972 transitions. [2021-11-05 20:32:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-05 20:32:23,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:32:23,768 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-11-05 20:32:23,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 20:32:23,768 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:32:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:32:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash -528659326, now seen corresponding path program 1 times [2021-11-05 20:32:23,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:32:23,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932321227] [2021-11-05 20:32:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:32:23,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:32:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:32:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 20:32:24,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:32:24,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932321227] [2021-11-05 20:32:24,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932321227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:32:24,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:32:24,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 20:32:24,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198983522] [2021-11-05 20:32:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:32:24,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:32:24,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:32:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:32:24,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:32:24,347 INFO L87 Difference]: Start difference. First operand 126847 states and 176972 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2021-11-05 20:32:30,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:32:30,409 INFO L93 Difference]: Finished difference Result 126847 states and 176972 transitions. [2021-11-05 20:32:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:32:30,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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 235 [2021-11-05 20:32:30,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:32:30,705 INFO L225 Difference]: With dead ends: 126847 [2021-11-05 20:32:30,705 INFO L226 Difference]: Without dead ends: 126841 [2021-11-05 20:32:30,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:32:30,757 INFO L933 BasicCegarLoop]: 14030 mSDtfsCounter, 9757 mSDsluCounter, 17921 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3860.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9757 SdHoareTripleChecker+Valid, 31951 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.04ms SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4409.47ms IncrementalHoareTripleChecker+Time [2021-11-05 20:32:30,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9757 Valid, 31951 Invalid, 395 Unknown, 0 Unchecked, 30.04ms Time], IncrementalHoareTripleChecker [83 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 4409.47ms Time] [2021-11-05 20:32:30,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126841 states. [2021-11-05 20:32:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126841 to 126841. [2021-11-05 20:32:33,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126841 states, 126496 states have (on average 1.3970876549456108) internal successors, (176726), 126648 states have internal predecessors, (176726), 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) [2021-11-05 20:32:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126841 states to 126841 states and 176966 transitions. [2021-11-05 20:32:33,638 INFO L78 Accepts]: Start accepts. Automaton has 126841 states and 176966 transitions. Word has length 235 [2021-11-05 20:32:33,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:32:33,638 INFO L470 AbstractCegarLoop]: Abstraction has 126841 states and 176966 transitions. [2021-11-05 20:32:33,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 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) [2021-11-05 20:32:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 126841 states and 176966 transitions. [2021-11-05 20:32:33,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-05 20:32:33,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:32:33,642 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-11-05 20:32:33,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 20:32:33,642 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:32:33,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:32:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1235088091, now seen corresponding path program 1 times [2021-11-05 20:32:33,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:32:33,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202569574] [2021-11-05 20:32:33,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:32:33,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:32:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:32:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 20:32:34,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:32:34,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202569574] [2021-11-05 20:32:34,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202569574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:32:34,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:32:34,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 20:32:34,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218814743] [2021-11-05 20:32:34,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:32:34,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:32:34,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:32:34,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:32:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:32:34,384 INFO L87 Difference]: Start difference. First operand 126841 states and 176966 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:32:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 20:32:36,155 INFO L93 Difference]: Finished difference Result 126841 states and 176966 transitions. [2021-11-05 20:32:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 20:32:36,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-05 20:32:36,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 20:32:36,426 INFO L225 Difference]: With dead ends: 126841 [2021-11-05 20:32:36,426 INFO L226 Difference]: Without dead ends: 126835 [2021-11-05 20:32:36,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.38ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 20:32:36,476 INFO L933 BasicCegarLoop]: 14096 mSDtfsCounter, 13877 mSDsluCounter, 14075 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13877 SdHoareTripleChecker+Valid, 28171 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.00ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.06ms IncrementalHoareTripleChecker+Time [2021-11-05 20:32:36,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13877 Valid, 28171 Invalid, 35 Unknown, 0 Unchecked, 28.00ms Time], IncrementalHoareTripleChecker [14 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 109.06ms Time] [2021-11-05 20:32:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126835 states. [2021-11-05 20:32:39,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126835 to 126835. [2021-11-05 20:32:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126835 states, 126493 states have (on average 1.3970733558378725) internal successors, (176720), 126642 states have internal predecessors, (176720), 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) [2021-11-05 20:32:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126835 states to 126835 states and 176960 transitions. [2021-11-05 20:32:39,503 INFO L78 Accepts]: Start accepts. Automaton has 126835 states and 176960 transitions. Word has length 237 [2021-11-05 20:32:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 20:32:39,504 INFO L470 AbstractCegarLoop]: Abstraction has 126835 states and 176960 transitions. [2021-11-05 20:32:39,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 20:32:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 126835 states and 176960 transitions. [2021-11-05 20:32:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-05 20:32:39,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 20:32:39,507 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2021-11-05 20:32:39,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 20:32:39,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [rt2500usb_enable_radioErr0ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr1ASSERT_VIOLATIONERROR_FUNCTION, rt2500usb_enable_radioErr2ASSERT_VIOLATIONERROR_FUNCTION (and 153 more)] === [2021-11-05 20:32:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 20:32:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1508298168, now seen corresponding path program 1 times [2021-11-05 20:32:39,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 20:32:39,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217502902] [2021-11-05 20:32:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 20:32:39,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 20:32:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 20:32:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 20:32:40,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 20:32:40,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217502902] [2021-11-05 20:32:40,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217502902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 20:32:40,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 20:32:40,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 20:32:40,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709535076] [2021-11-05 20:32:40,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 20:32:40,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 20:32:40,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 20:32:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 20:32:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 20:32:40,258 INFO L87 Difference]: Start difference. First operand 126835 states and 176960 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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)