./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 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.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 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 21:13:29,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 21:13:29,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 21:13:29,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 21:13:29,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 21:13:29,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 21:13:29,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 21:13:29,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 21:13:29,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 21:13:29,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 21:13:29,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 21:13:29,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 21:13:29,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 21:13:29,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 21:13:29,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 21:13:29,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 21:13:29,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 21:13:29,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 21:13:29,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 21:13:29,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 21:13:29,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 21:13:29,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 21:13:29,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 21:13:29,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 21:13:29,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 21:13:29,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 21:13:29,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 21:13:29,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 21:13:29,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 21:13:29,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 21:13:29,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 21:13:29,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 21:13:29,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 21:13:29,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 21:13:29,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 21:13:29,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 21:13:29,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 21:13:29,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 21:13:29,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 21:13:29,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 21:13:29,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 21:13:29,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 21:13:29,854 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 21:13:29,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 21:13:29,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 21:13:29,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 21:13:29,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 21:13:29,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 21:13:29,856 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 21:13:29,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 21:13:29,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 21:13:29,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 21:13:29,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 21:13:29,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 21:13:29,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 21:13:29,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 21:13:29,857 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 21:13:29,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 21:13:29,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 21:13:29,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 21:13:29,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 21:13:29,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 21:13:29,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 21:13:29,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 21:13:29,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 21:13:29,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 21:13:29,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 21:13:29,858 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 21:13:29,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 21:13:29,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 21:13:29,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 21:13:29,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 [2021-11-06 21:13:30,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 21:13:30,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 21:13:30,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 21:13:30,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 21:13:30,039 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 21:13:30,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-06 21:13:30,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416968d7e/79c47b155d14406f9af25749a1ef6e6d/FLAG9628f8ee5 [2021-11-06 21:13:30,769 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 21:13:30,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-06 21:13:30,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416968d7e/79c47b155d14406f9af25749a1ef6e6d/FLAG9628f8ee5 [2021-11-06 21:13:30,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416968d7e/79c47b155d14406f9af25749a1ef6e6d [2021-11-06 21:13:30,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 21:13:30,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 21:13:30,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 21:13:30,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 21:13:30,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 21:13:30,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:13:30" (1/1) ... [2021-11-06 21:13:30,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efc85e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:30, skipping insertion in model container [2021-11-06 21:13:30,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:13:30" (1/1) ... [2021-11-06 21:13:30,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 21:13:31,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 21:13:34,233 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-06 21:13:34,239 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-06 21:13:34,243 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-06 21:13:34,243 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-06 21:13:34,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 21:13:34,336 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 21:13:34,653 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-06 21:13:34,654 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-06 21:13:34,654 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-06 21:13:34,655 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-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-06 21:13:34,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 21:13:34,860 INFO L208 MainTranslator]: Completed translation [2021-11-06 21:13:34,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34 WrapperNode [2021-11-06 21:13:34,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 21:13:34,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 21:13:34,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 21:13:34,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 21:13:34,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:34,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:37,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 21:13:37,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 21:13:37,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 21:13:37,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 21:13:37,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:37,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:37,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:37,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:39,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:39,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:39,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:40,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 21:13:40,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 21:13:40,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 21:13:40,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 21:13:40,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (1/1) ... [2021-11-06 21:13:40,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 21:13:40,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 21:13:40,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 21:13:40,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 21:13:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_121 [2021-11-06 21:13:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_121 [2021-11-06 21:13:40,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2021-11-06 21:13:40,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2021-11-06 21:13:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_147 [2021-11-06 21:13:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_147 [2021-11-06 21:13:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 21:13:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 21:13:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 21:13:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 21:13:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2021-11-06 21:13:40,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2021-11-06 21:13:40,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 21:13:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-06 21:13:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-06 21:13:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 21:13:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 21:13:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure cas_link_timer [2021-11-06 21:13:40,171 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_link_timer [2021-11-06 21:13:40,171 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-06 21:13:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-06 21:13:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 21:13:40,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 21:13:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 21:13:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 21:13:40,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 21:13:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 21:13:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2021-11-06 21:13:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2021-11-06 21:13:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 21:13:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2021-11-06 21:13:40,173 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2021-11-06 21:13:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 21:13:40,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 21:19:19,521 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_14_returnLabel: main_#res := 0; [2021-11-06 21:19:19,522 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 21:19:19,524 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint L14685: #t~ret2304 := main_#res; [2021-11-06 21:19:19,527 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; [2021-11-06 21:19:19,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 21:19:19,613 INFO L299 CfgBuilder]: Removed 27494 assume(true) statements. [2021-11-06 21:19:19,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:19:19 BoogieIcfgContainer [2021-11-06 21:19:19,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 21:19:19,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 21:19:19,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 21:19:19,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 21:19:19,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:13:30" (1/3) ... [2021-11-06 21:19:19,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7926f930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:19:19, skipping insertion in model container [2021-11-06 21:19:19,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:34" (2/3) ... [2021-11-06 21:19:19,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7926f930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:19:19, skipping insertion in model container [2021-11-06 21:19:19,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:19:19" (3/3) ... [2021-11-06 21:19:19,642 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-06 21:19:19,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 21:19:19,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 718 error locations. [2021-11-06 21:19:19,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 21:19:19,740 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 21:19:19,741 INFO L340 AbstractCegarLoop]: Starting to check reachability of 718 error locations. [2021-11-06 21:19:19,977 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) [2021-11-06 21:19:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 21:19:19,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:19,983 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] [2021-11-06 21:19:19,983 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)] === [2021-11-06 21:19:19,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash -531829004, now seen corresponding path program 1 times [2021-11-06 21:19:19,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:19,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621721481] [2021-11-06 21:19:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:19,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:20,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:20,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621721481] [2021-11-06 21:19:20,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621721481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:20,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:20,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:20,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092313191] [2021-11-06 21:19:20,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:20,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:20,964 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) [2021-11-06 21:19:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:23,383 INFO L93 Difference]: Finished difference Result 61576 states and 80366 transitions. [2021-11-06 21:19:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 21:19:23,385 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 [2021-11-06 21:19:23,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:23,551 INFO L225 Difference]: With dead ends: 61576 [2021-11-06 21:19:23,551 INFO L226 Difference]: Without dead ends: 35358 [2021-11-06 21:19:23,610 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 [2021-11-06 21:19:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35358 states. [2021-11-06 21:19:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35358 to 30423. [2021-11-06 21:19:24,348 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) [2021-11-06 21:19:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30423 states to 30423 states and 37950 transitions. [2021-11-06 21:19:24,462 INFO L78 Accepts]: Start accepts. Automaton has 30423 states and 37950 transitions. Word has length 24 [2021-11-06 21:19:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:24,462 INFO L470 AbstractCegarLoop]: Abstraction has 30423 states and 37950 transitions. [2021-11-06 21:19:24,462 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) [2021-11-06 21:19:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 30423 states and 37950 transitions. [2021-11-06 21:19:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-06 21:19:24,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:24,463 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] [2021-11-06 21:19:24,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 21:19:24,464 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)] === [2021-11-06 21:19:24,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:24,464 INFO L85 PathProgramCache]: Analyzing trace with hash 15956375, now seen corresponding path program 1 times [2021-11-06 21:19:24,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:24,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632323261] [2021-11-06 21:19:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:24,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:24,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:24,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632323261] [2021-11-06 21:19:24,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632323261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:24,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:24,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:24,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82101337] [2021-11-06 21:19:24,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:24,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:24,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:24,747 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) [2021-11-06 21:19:25,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:25,478 INFO L93 Difference]: Finished difference Result 30423 states and 37950 transitions. [2021-11-06 21:19:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:19:25,478 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 [2021-11-06 21:19:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:25,542 INFO L225 Difference]: With dead ends: 30423 [2021-11-06 21:19:25,543 INFO L226 Difference]: Without dead ends: 30419 [2021-11-06 21:19:25,559 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 [2021-11-06 21:19:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30419 states. [2021-11-06 21:19:26,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30419 to 30419. [2021-11-06 21:19:26,194 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) [2021-11-06 21:19:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30419 states to 30419 states and 37946 transitions. [2021-11-06 21:19:26,266 INFO L78 Accepts]: Start accepts. Automaton has 30419 states and 37946 transitions. Word has length 26 [2021-11-06 21:19:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:26,267 INFO L470 AbstractCegarLoop]: Abstraction has 30419 states and 37946 transitions. [2021-11-06 21:19:26,267 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) [2021-11-06 21:19:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 30419 states and 37946 transitions. [2021-11-06 21:19:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 21:19:26,269 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:26,269 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] [2021-11-06 21:19:26,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 21:19:26,269 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)] === [2021-11-06 21:19:26,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1843271494, now seen corresponding path program 1 times [2021-11-06 21:19:26,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:26,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723803481] [2021-11-06 21:19:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:26,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:26,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:26,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:26,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723803481] [2021-11-06 21:19:26,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723803481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:26,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:26,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:26,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099036612] [2021-11-06 21:19:26,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:26,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:26,610 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) [2021-11-06 21:19:27,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:27,469 INFO L93 Difference]: Finished difference Result 30419 states and 37946 transitions. [2021-11-06 21:19:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:19:27,470 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 [2021-11-06 21:19:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:27,531 INFO L225 Difference]: With dead ends: 30419 [2021-11-06 21:19:27,532 INFO L226 Difference]: Without dead ends: 30415 [2021-11-06 21:19:27,540 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 [2021-11-06 21:19:27,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30415 states. [2021-11-06 21:19:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30415 to 30415. [2021-11-06 21:19:28,204 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) [2021-11-06 21:19:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30415 states to 30415 states and 37942 transitions. [2021-11-06 21:19:28,270 INFO L78 Accepts]: Start accepts. Automaton has 30415 states and 37942 transitions. Word has length 28 [2021-11-06 21:19:28,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:28,270 INFO L470 AbstractCegarLoop]: Abstraction has 30415 states and 37942 transitions. [2021-11-06 21:19:28,270 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) [2021-11-06 21:19:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand 30415 states and 37942 transitions. [2021-11-06 21:19:28,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-06 21:19:28,272 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:28,272 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] [2021-11-06 21:19:28,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 21:19:28,273 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)] === [2021-11-06 21:19:28,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:28,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1854858147, now seen corresponding path program 1 times [2021-11-06 21:19:28,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:28,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923531642] [2021-11-06 21:19:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:28,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:28,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:28,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923531642] [2021-11-06 21:19:28,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923531642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:28,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:28,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:28,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297243377] [2021-11-06 21:19:28,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:28,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:28,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:28,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:28,583 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) [2021-11-06 21:19:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:29,289 INFO L93 Difference]: Finished difference Result 30415 states and 37942 transitions. [2021-11-06 21:19:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:19:29,290 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 [2021-11-06 21:19:29,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:29,350 INFO L225 Difference]: With dead ends: 30415 [2021-11-06 21:19:29,351 INFO L226 Difference]: Without dead ends: 30411 [2021-11-06 21:19:29,364 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 [2021-11-06 21:19:29,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30411 states. [2021-11-06 21:19:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30411 to 30411. [2021-11-06 21:19:30,041 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) [2021-11-06 21:19:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30411 states to 30411 states and 37938 transitions. [2021-11-06 21:19:30,099 INFO L78 Accepts]: Start accepts. Automaton has 30411 states and 37938 transitions. Word has length 30 [2021-11-06 21:19:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:30,100 INFO L470 AbstractCegarLoop]: Abstraction has 30411 states and 37938 transitions. [2021-11-06 21:19:30,100 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) [2021-11-06 21:19:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 30411 states and 37938 transitions. [2021-11-06 21:19:30,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-06 21:19:30,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:30,104 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] [2021-11-06 21:19:30,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 21:19:30,104 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)] === [2021-11-06 21:19:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash -104729472, now seen corresponding path program 1 times [2021-11-06 21:19:30,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:30,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156428617] [2021-11-06 21:19:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:30,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:30,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:30,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156428617] [2021-11-06 21:19:30,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156428617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:30,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:30,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:30,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417347602] [2021-11-06 21:19:30,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:30,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:30,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:30,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:30,584 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) [2021-11-06 21:19:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:31,217 INFO L93 Difference]: Finished difference Result 30411 states and 37938 transitions. [2021-11-06 21:19:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:19:31,218 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 [2021-11-06 21:19:31,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:31,284 INFO L225 Difference]: With dead ends: 30411 [2021-11-06 21:19:31,284 INFO L226 Difference]: Without dead ends: 30407 [2021-11-06 21:19:31,296 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 [2021-11-06 21:19:31,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30407 states. [2021-11-06 21:19:32,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30407 to 30407. [2021-11-06 21:19:32,076 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) [2021-11-06 21:19:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30407 states to 30407 states and 37934 transitions. [2021-11-06 21:19:32,149 INFO L78 Accepts]: Start accepts. Automaton has 30407 states and 37934 transitions. Word has length 32 [2021-11-06 21:19:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:32,151 INFO L470 AbstractCegarLoop]: Abstraction has 30407 states and 37934 transitions. [2021-11-06 21:19:32,152 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) [2021-11-06 21:19:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 30407 states and 37934 transitions. [2021-11-06 21:19:32,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-06 21:19:32,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:32,154 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] [2021-11-06 21:19:32,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 21:19:32,155 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)] === [2021-11-06 21:19:32,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:32,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1858252509, now seen corresponding path program 1 times [2021-11-06 21:19:32,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:32,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369446203] [2021-11-06 21:19:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:32,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:32,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:32,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369446203] [2021-11-06 21:19:32,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369446203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:32,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:32,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:32,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139405449] [2021-11-06 21:19:32,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:32,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:32,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:32,619 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) [2021-11-06 21:19:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:33,344 INFO L93 Difference]: Finished difference Result 30407 states and 37934 transitions. [2021-11-06 21:19:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:19:33,344 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 34 [2021-11-06 21:19:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:33,407 INFO L225 Difference]: With dead ends: 30407 [2021-11-06 21:19:33,408 INFO L226 Difference]: Without dead ends: 30403 [2021-11-06 21:19:33,420 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 [2021-11-06 21:19:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30403 states. [2021-11-06 21:19:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30403 to 30403. [2021-11-06 21:19:34,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30403 states, 29611 states have (on average 1.2742561885785688) internal successors, (37732), 30300 states have internal predecessors, (37732), 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) [2021-11-06 21:19:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30403 states to 30403 states and 37930 transitions. [2021-11-06 21:19:34,421 INFO L78 Accepts]: Start accepts. Automaton has 30403 states and 37930 transitions. Word has length 34 [2021-11-06 21:19:34,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:34,421 INFO L470 AbstractCegarLoop]: Abstraction has 30403 states and 37930 transitions. [2021-11-06 21:19:34,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-11-06 21:19:34,421 INFO L276 IsEmpty]: Start isEmpty. Operand 30403 states and 37930 transitions. [2021-11-06 21:19:34,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-06 21:19:34,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:34,422 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 21:19:34,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 21:19:34,422 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr664ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-06 21:19:34,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:34,423 INFO L85 PathProgramCache]: Analyzing trace with hash 928256582, now seen corresponding path program 1 times [2021-11-06 21:19:34,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:34,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251266057] [2021-11-06 21:19:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:34,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:34,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:34,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251266057] [2021-11-06 21:19:34,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251266057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:34,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:34,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:34,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113327652] [2021-11-06 21:19:34,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:34,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:34,728 INFO L87 Difference]: Start difference. First operand 30403 states and 37930 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:19:35,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:35,575 INFO L93 Difference]: Finished difference Result 30403 states and 37930 transitions. [2021-11-06 21:19:35,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:19:35,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2021-11-06 21:19:35,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:35,640 INFO L225 Difference]: With dead ends: 30403 [2021-11-06 21:19:35,641 INFO L226 Difference]: Without dead ends: 30399 [2021-11-06 21:19:35,656 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 [2021-11-06 21:19:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30399 states. [2021-11-06 21:19:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30399 to 30399. [2021-11-06 21:19:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30399 states, 29609 states have (on average 1.2742071667398427) internal successors, (37728), 30296 states have internal predecessors, (37728), 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) [2021-11-06 21:19:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30399 states to 30399 states and 37926 transitions. [2021-11-06 21:19:36,498 INFO L78 Accepts]: Start accepts. Automaton has 30399 states and 37926 transitions. Word has length 36 [2021-11-06 21:19:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:36,498 INFO L470 AbstractCegarLoop]: Abstraction has 30399 states and 37926 transitions. [2021-11-06 21:19:36,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:19:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 30399 states and 37926 transitions. [2021-11-06 21:19:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-06 21:19:36,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:36,499 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 21:19:36,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 21:19:36,500 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr665ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-06 21:19:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:36,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1296099351, now seen corresponding path program 1 times [2021-11-06 21:19:36,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:36,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450401507] [2021-11-06 21:19:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:36,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:36,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:36,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:36,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450401507] [2021-11-06 21:19:36,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450401507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:36,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:36,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:36,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134026778] [2021-11-06 21:19:36,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:36,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:36,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:36,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:36,746 INFO L87 Difference]: Start difference. First operand 30399 states and 37926 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:19:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 21:19:37,954 INFO L93 Difference]: Finished difference Result 33665 states and 42021 transitions. [2021-11-06 21:19:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 21:19:37,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-06 21:19:37,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 21:19:38,028 INFO L225 Difference]: With dead ends: 33665 [2021-11-06 21:19:38,029 INFO L226 Difference]: Without dead ends: 33661 [2021-11-06 21:19:38,044 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 [2021-11-06 21:19:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33661 states. [2021-11-06 21:19:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33661 to 32037. [2021-11-06 21:19:39,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32037 states, 31211 states have (on average 1.2766652782672776) internal successors, (39846), 31898 states have internal predecessors, (39846), 86 states have call successors, (86), 36 states have call predecessors, (86), 36 states have return successors, (234), 102 states have call predecessors, (234), 86 states have call successors, (234) [2021-11-06 21:19:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32037 states to 32037 states and 40166 transitions. [2021-11-06 21:19:39,121 INFO L78 Accepts]: Start accepts. Automaton has 32037 states and 40166 transitions. Word has length 38 [2021-11-06 21:19:39,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 21:19:39,122 INFO L470 AbstractCegarLoop]: Abstraction has 32037 states and 40166 transitions. [2021-11-06 21:19:39,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 21:19:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 32037 states and 40166 transitions. [2021-11-06 21:19:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-06 21:19:39,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 21:19:39,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 21:19:39,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 21:19:39,123 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr666ASSERT_VIOLATIONERROR_FUNCTION === [cas_link_timerErr0ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr1ASSERT_VIOLATIONERROR_FUNCTION, cas_link_timerErr2ASSERT_VIOLATIONERROR_FUNCTION (and 715 more)] === [2021-11-06 21:19:39,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 21:19:39,124 INFO L85 PathProgramCache]: Analyzing trace with hash -8437236, now seen corresponding path program 1 times [2021-11-06 21:19:39,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 21:19:39,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866053962] [2021-11-06 21:19:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 21:19:39,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 21:19:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 21:19:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 21:19:39,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 21:19:39,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866053962] [2021-11-06 21:19:39,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866053962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 21:19:39,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 21:19:39,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 21:19:39,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161933420] [2021-11-06 21:19:39,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 21:19:39,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 21:19:39,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 21:19:39,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 21:19:39,378 INFO L87 Difference]: Start difference. First operand 32037 states and 40166 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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)