./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU --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 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:20:48,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:20:48,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:20:48,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:20:48,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:20:48,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:20:48,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:20:48,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:20:48,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:20:48,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:20:48,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:20:48,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:20:48,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:20:48,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:20:48,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:20:48,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:20:48,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:20:48,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:20:48,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:20:48,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:20:48,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:20:48,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:20:48,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:20:48,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:20:48,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:20:48,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:20:48,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:20:48,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:20:48,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:20:48,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:20:48,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:20:48,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:20:48,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:20:48,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:20:48,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:20:48,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:20:48,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:20:48,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:20:48,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:20:48,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:20:48,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:20:48,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 23:20:48,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:20:48,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:20:48,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:20:48,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:20:48,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:20:48,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:20:48,270 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:20:48,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:20:48,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:20:48,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:20:48,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:20:48,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:20:48,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:20:48,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:20:48,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:20:48,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:20:48,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:20:48,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:20:48,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:20:48,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:20:48,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:20:48,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:20:48,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:20:48,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:20:48,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:20:48,277 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:20:48,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:20:48,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:20:48,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:20:48,280 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 [2021-11-02 23:20:48,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:20:48,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:20:48,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:20:48,669 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:20:48,670 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:20:48,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-02 23:20:48,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/data/f6de624e4/2fc2653679e14fd8a0fb9cccf126595b/FLAG1358638ac [2021-11-02 23:20:49,963 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:20:49,963 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-02 23:20:50,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/data/f6de624e4/2fc2653679e14fd8a0fb9cccf126595b/FLAG1358638ac [2021-11-02 23:20:50,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/data/f6de624e4/2fc2653679e14fd8a0fb9cccf126595b [2021-11-02 23:20:50,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:20:50,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:20:50,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:20:50,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:20:50,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:20:50,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:20:50" (1/1) ... [2021-11-02 23:20:50,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740d61cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:50, skipping insertion in model container [2021-11-02 23:20:50,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:20:50" (1/1) ... [2021-11-02 23:20:50,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:20:50,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:20:57,263 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-02 23:20:57,273 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-02 23:20:57,274 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-02 23:20:57,275 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-02 23:20:57,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:20:57,426 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:20:58,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-02 23:20:58,175 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-02 23:20:58,176 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-02 23:20:58,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-02 23:20:58,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:20:58,592 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:20:58,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58 WrapperNode [2021-11-02 23:20:58,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:20:58,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:20:58,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:20:58,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:20:58,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:20:58,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:04,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:21:04,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:21:04,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:21:04,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:21:04,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:04,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:05,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:05,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:08,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:09,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:09,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:10,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:21:10,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:21:10,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:21:10,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:21:10,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (1/1) ... [2021-11-02 23:21:10,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:21:10,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:21:10,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:21:10,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdf981-840e-4a41-873f-1a4264664998/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_121 [2021-11-02 23:21:10,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_121 [2021-11-02 23:21:10,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2021-11-02 23:21:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2021-11-02 23:21:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_147 [2021-11-02 23:21:10,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_147 [2021-11-02 23:21:10,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 23:21:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 23:21:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 23:21:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 23:21:10,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2021-11-02 23:21:10,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2021-11-02 23:21:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 23:21:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-02 23:21:10,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-02 23:21:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 23:21:10,194 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 23:21:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure cas_link_timer [2021-11-02 23:21:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_link_timer [2021-11-02 23:21:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-02 23:21:10,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-02 23:21:10,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:21:10,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:21:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 23:21:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 23:21:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:21:10,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 23:21:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2021-11-02 23:21:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2021-11-02 23:21:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 23:21:10,197 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2021-11-02 23:21:10,197 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2021-11-02 23:21:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 23:21:10,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:29:05,218 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_14_returnLabel: main_#res := 0; [2021-11-02 23:29:05,219 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-02 23:29:05,222 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L14685: #t~ret2304 := main_#res; [2021-11-02 23:29:05,225 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_pci_pci_instance_2_switch_break: call ULTIMATE.dealloc(ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset);havoc ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.base, ldv_pci_pci_instance_2_~#ldv_2_resource_pm_message~0.offset; [2021-11-02 23:29:05,351 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:29:05,351 INFO L299 CfgBuilder]: Removed 27494 assume(true) statements. [2021-11-02 23:29:05,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:29:05 BoogieIcfgContainer [2021-11-02 23:29:05,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:29:05,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:29:05,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:29:05,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:29:05,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:20:50" (1/3) ... [2021-11-02 23:29:05,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cbad96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:29:05, skipping insertion in model container [2021-11-02 23:29:05,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:20:58" (2/3) ... [2021-11-02 23:29:05,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cbad96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:29:05, skipping insertion in model container [2021-11-02 23:29:05,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:29:05" (3/3) ... [2021-11-02 23:29:05,385 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-02 23:29:05,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:29:05,399 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 718 error locations. [2021-11-02 23:29:05,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:29:05,545 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 [2021-11-02 23:29:05,545 INFO L340 AbstractCegarLoop]: Starting to check reachability of 718 error locations. [2021-11-02 23:29:05,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 24991 states, 24222 states have (on average 1.3423747006853275) internal successors, (32515), 24939 states have internal predecessors, (32515), 42 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-02 23:29:05,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 23:29:05,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:29:05,922 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:29:05,923 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr658ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-02 23:29:05,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:29:05,928 INFO L85 PathProgramCache]: Analyzing trace with hash -531829004, now seen corresponding path program 1 times [2021-11-02 23:29:05,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:29:05,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728826148] [2021-11-02 23:29:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:29:05,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:29:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:29:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:29:07,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:29:07,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728826148] [2021-11-02 23:29:07,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728826148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:29:07,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:29:07,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:29:07,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094314919] [2021-11-02 23:29:07,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:29:07,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:29:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:29:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:29:07,141 INFO L87 Difference]: Start difference. First operand has 24991 states, 24222 states have (on average 1.3423747006853275) internal successors, (32515), 24939 states have internal predecessors, (32515), 42 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-02 23:29:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:29:10,467 INFO L93 Difference]: Finished difference Result 61576 states and 80366 transitions. [2021-11-02 23:29:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:29:10,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-02 23:29:10,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:29:10,714 INFO L225 Difference]: With dead ends: 61576 [2021-11-02 23:29:10,714 INFO L226 Difference]: Without dead ends: 35358 [2021-11-02 23:29:10,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:29:10,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35358 states. [2021-11-02 23:29:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35358 to 30423. [2021-11-02 23:29:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30423 states, 29621 states have (on average 1.2745011984740555) internal successors, (37752), 30320 states have internal predecessors, (37752), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-02 23:29:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 37950 transitions. [2021-11-02 23:29:12,357 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 37950 transitions. Word has length 24 [2021-11-02 23:29:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:29:12,358 INFO L470 AbstractCegarLoop]: Abstraction has 30423 states and 37950 transitions. [2021-11-02 23:29:12,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-02 23:29:12,359 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 37950 transitions. [2021-11-02 23:29:12,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-02 23:29:12,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:29:12,360 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:29:12,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:29:12,361 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr659ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-02 23:29:12,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:29:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash 15956375, now seen corresponding path program 1 times [2021-11-02 23:29:12,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:29:12,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134135148] [2021-11-02 23:29:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:29:12,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:29:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:29:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:29:12,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:29:12,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134135148] [2021-11-02 23:29:12,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134135148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:29:12,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:29:12,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:29:12,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664769391] [2021-11-02 23:29:12,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:29:12,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:29:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:29:12,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:29:12,912 INFO L87 Difference]: Start difference. First operand 30423 states and 37950 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-11-02 23:29:14,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:29:14,276 INFO L93 Difference]: Finished difference Result 30423 states and 37950 transitions. [2021-11-02 23:29:14,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:29:14,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2021-11-02 23:29:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:29:14,375 INFO L225 Difference]: With dead ends: 30423 [2021-11-02 23:29:14,375 INFO L226 Difference]: Without dead ends: 30419 [2021-11-02 23:29:14,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:29:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30419 states. [2021-11-02 23:29:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30419 to 30419. [2021-11-02 23:29:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30419 states, 29619 states have (on average 1.2744522097302406) internal successors, (37748), 30316 states have internal predecessors, (37748), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-02 23:29:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30419 states to 30419 states and 37946 transitions. [2021-11-02 23:29:15,697 INFO L78 Accepts]: Start accepts. Automaton has 30419 states and 37946 transitions. Word has length 26 [2021-11-02 23:29:15,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:29:15,698 INFO L470 AbstractCegarLoop]: Abstraction has 30419 states and 37946 transitions. [2021-11-02 23:29:15,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-11-02 23:29:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand 30419 states and 37946 transitions. [2021-11-02 23:29:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 23:29:15,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:29:15,700 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:29:15,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:29:15,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr660ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-02 23:29:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:29:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1843271494, now seen corresponding path program 1 times [2021-11-02 23:29:15,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:29:15,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773261063] [2021-11-02 23:29:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:29:15,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:29:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:29:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:29:16,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:29:16,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773261063] [2021-11-02 23:29:16,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773261063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:29:16,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:29:16,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:29:16,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648302440] [2021-11-02 23:29:16,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:29:16,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:29:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:29:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:29:16,514 INFO L87 Difference]: Start difference. First operand 30419 states and 37946 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-02 23:29:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:29:17,730 INFO L93 Difference]: Finished difference Result 30419 states and 37946 transitions. [2021-11-02 23:29:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:29:17,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-11-02 23:29:17,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:29:17,816 INFO L225 Difference]: With dead ends: 30419 [2021-11-02 23:29:17,816 INFO L226 Difference]: Without dead ends: 30415 [2021-11-02 23:29:17,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:29:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30415 states. [2021-11-02 23:29:18,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30415 to 30415. [2021-11-02 23:29:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30415 states, 29617 states have (on average 1.2744032143701252) internal successors, (37744), 30312 states have internal predecessors, (37744), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-02 23:29:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30415 states to 30415 states and 37942 transitions. [2021-11-02 23:29:19,021 INFO L78 Accepts]: Start accepts. Automaton has 30415 states and 37942 transitions. Word has length 28 [2021-11-02 23:29:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:29:19,022 INFO L470 AbstractCegarLoop]: Abstraction has 30415 states and 37942 transitions. [2021-11-02 23:29:19,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-02 23:29:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 30415 states and 37942 transitions. [2021-11-02 23:29:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-02 23:29:19,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:29:19,025 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:29:19,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:29:19,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr661ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-02 23:29:19,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:29:19,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1854858147, now seen corresponding path program 1 times [2021-11-02 23:29:19,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:29:19,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755962818] [2021-11-02 23:29:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:29:19,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:29:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:29:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:29:19,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:29:19,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755962818] [2021-11-02 23:29:19,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755962818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:29:19,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:29:19,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:29:19,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238315085] [2021-11-02 23:29:19,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:29:19,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:29:19,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:29:19,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:29:19,535 INFO L87 Difference]: Start difference. First operand 30415 states and 37942 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-02 23:29:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:29:20,937 INFO L93 Difference]: Finished difference Result 30415 states and 37942 transitions. [2021-11-02 23:29:20,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:29:20,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2021-11-02 23:29:20,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:29:21,021 INFO L225 Difference]: With dead ends: 30415 [2021-11-02 23:29:21,022 INFO L226 Difference]: Without dead ends: 30411 [2021-11-02 23:29:21,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:29:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30411 states. [2021-11-02 23:29:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30411 to 30411. [2021-11-02 23:29:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30411 states, 29615 states have (on average 1.2743542123923688) internal successors, (37740), 30308 states have internal predecessors, (37740), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-02 23:29:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30411 states to 30411 states and 37938 transitions. [2021-11-02 23:29:22,272 INFO L78 Accepts]: Start accepts. Automaton has 30411 states and 37938 transitions. Word has length 30 [2021-11-02 23:29:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:29:22,273 INFO L470 AbstractCegarLoop]: Abstraction has 30411 states and 37938 transitions. [2021-11-02 23:29:22,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-11-02 23:29:22,273 INFO L276 IsEmpty]: Start isEmpty. Operand 30411 states and 37938 transitions. [2021-11-02 23:29:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 23:29:22,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:29:22,280 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:29:22,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:29:22,280 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr662ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-02 23:29:22,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:29:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash -104729472, now seen corresponding path program 1 times [2021-11-02 23:29:22,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:29:22,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997390867] [2021-11-02 23:29:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:29:22,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:29:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:29:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:29:22,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:29:22,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997390867] [2021-11-02 23:29:22,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997390867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:29:22,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:29:22,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:29:22,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521749689] [2021-11-02 23:29:22,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:29:22,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:29:22,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:29:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:29:22,783 INFO L87 Difference]: Start difference. First operand 30411 states and 37938 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-02 23:29:24,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:29:24,124 INFO L93 Difference]: Finished difference Result 30411 states and 37938 transitions. [2021-11-02 23:29:24,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:29:24,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-02 23:29:24,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:29:24,210 INFO L225 Difference]: With dead ends: 30411 [2021-11-02 23:29:24,210 INFO L226 Difference]: Without dead ends: 30407 [2021-11-02 23:29:24,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:29:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30407 states. [2021-11-02 23:29:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30407 to 30407. [2021-11-02 23:29:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30407 states, 29613 states have (on average 1.2743052037956304) internal successors, (37736), 30304 states have internal predecessors, (37736), 66 states have call successors, (66), 18 states have call predecessors, (66), 18 states have return successors, (132), 84 states have call predecessors, (132), 66 states have call successors, (132) [2021-11-02 23:29:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 37934 transitions. [2021-11-02 23:29:25,466 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 37934 transitions. Word has length 32 [2021-11-02 23:29:25,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:29:25,470 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 37934 transitions. [2021-11-02 23:29:25,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-11-02 23:29:25,470 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 37934 transitions. [2021-11-02 23:29:25,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 23:29:25,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:29:25,475 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:29:25,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:29:25,476 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr663ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-02 23:29:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:29:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1858252509, now seen corresponding path program 1 times [2021-11-02 23:29:25,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:29:25,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271962688] [2021-11-02 23:29:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:29:25,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:29:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:29:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:29:26,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:29:26,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271962688] [2021-11-02 23:29:26,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271962688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:29:26,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:29:26,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:29:26,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73552671] [2021-11-02 23:29:26,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:29:26,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:29:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:29:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:29:26,083 INFO L87 Difference]: Start difference. First operand 30407 states and 37934 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 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)