./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:59:59,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:59,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:59,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:59,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:59,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:59,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:59,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:59,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:59,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:59,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:59,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:59,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:59,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:59,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:59,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:59,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:59,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:59,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:59,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:59,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:59,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:59,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:59,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:59,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:59,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:59,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:59,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:59,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:59,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:59,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:59,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:59,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:59,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:59,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:59,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:59,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:59,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:59,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:59,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:59,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:59,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 21:00:00,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:00,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:00,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:00,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:00,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:00,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:00,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:00,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:00,030 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:00,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:00,030 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:00:00,031 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:00:00,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:00:00,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:00:00,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:00,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:00,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:00,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:00,032 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 21:00:00,032 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:00:00,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:00,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:00,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:00,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:00,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:00,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:00,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:00,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:00,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:00,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:00,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:00:00,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:00:00,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:00,035 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_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2022-11-02 21:00:00,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:00,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:00,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:00,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:00,330 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:00,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-11-02 21:00:00,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/data/e615c3d4e/af0d57c9fd6b4719b9fc7d5eb047cff0/FLAG5a4ffa543 [2022-11-02 21:00:00,903 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:00,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-11-02 21:00:00,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/data/e615c3d4e/af0d57c9fd6b4719b9fc7d5eb047cff0/FLAG5a4ffa543 [2022-11-02 21:00:01,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/data/e615c3d4e/af0d57c9fd6b4719b9fc7d5eb047cff0 [2022-11-02 21:00:01,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:01,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:01,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:01,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:01,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:01,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381ff564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01, skipping insertion in model container [2022-11-02 21:00:01,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:01,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:01,645 WARN L230 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_112ac502-70ae-4354-8bdd-43308055cc54/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-11-02 21:00:01,648 WARN L230 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_112ac502-70ae-4354-8bdd-43308055cc54/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-11-02 21:00:01,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:01,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:01,722 WARN L230 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_112ac502-70ae-4354-8bdd-43308055cc54/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-11-02 21:00:01,723 WARN L230 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_112ac502-70ae-4354-8bdd-43308055cc54/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-11-02 21:00:01,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:01,768 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:01,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01 WrapperNode [2022-11-02 21:00:01,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:01,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:01,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:01,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:01,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,859 INFO L138 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 302 [2022-11-02 21:00:01,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:01,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:01,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:01,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:01,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:01,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:01,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:01,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:01,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (1/1) ... [2022-11-02 21:00:01,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:01,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:01,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:01,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-11-02 21:00:02,018 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-11-02 21:00:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-11-02 21:00:02,020 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-11-02 21:00:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:00:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:00:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-11-02 21:00:02,022 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-11-02 21:00:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-02 21:00:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:00:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:00:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:00:02,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:00:02,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:02,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:02,024 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:00:02,219 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:00:02,221 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:00:02,679 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:02,918 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:02,918 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 21:00:02,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:02 BoogieIcfgContainer [2022-11-02 21:00:02,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:02,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:02,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:02,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:02,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:01" (1/3) ... [2022-11-02 21:00:02,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edff84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:02, skipping insertion in model container [2022-11-02 21:00:02,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:01" (2/3) ... [2022-11-02 21:00:02,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3edff84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:02, skipping insertion in model container [2022-11-02 21:00:02,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:02" (3/3) ... [2022-11-02 21:00:02,941 INFO L112 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2022-11-02 21:00:02,951 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:00:02,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:02,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-02 21:00:02,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:00:03,107 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 21:00:03,157 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:00:03,170 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 229 transitions, 482 flow [2022-11-02 21:00:03,172 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 229 transitions, 482 flow [2022-11-02 21:00:03,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 229 transitions, 482 flow [2022-11-02 21:00:03,306 INFO L130 PetriNetUnfolder]: 18/226 cut-off events. [2022-11-02 21:00:03,306 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:00:03,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 226 events. 18/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 607 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 180. Up to 4 conditions per place. [2022-11-02 21:00:03,326 INFO L118 LiptonReduction]: Number of co-enabled transitions 17654 [2022-11-02 21:00:12,500 INFO L133 LiptonReduction]: Checked pairs total: 49073 [2022-11-02 21:00:12,500 INFO L135 LiptonReduction]: Total number of compositions: 189 [2022-11-02 21:00:12,508 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 100 places, 104 transitions, 232 flow [2022-11-02 21:00:13,752 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 25092 states, 23714 states have (on average 4.070928565404403) internal successors, (96538), 25091 states have internal predecessors, (96538), 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) [2022-11-02 21:00:13,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:13,854 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73f8ebac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:13,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-11-02 21:00:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 25092 states, 23714 states have (on average 4.070928565404403) internal successors, (96538), 25091 states have internal predecessors, (96538), 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) [2022-11-02 21:00:13,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 21:00:13,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:13,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 21:00:13,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_reader1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash 39581186, now seen corresponding path program 1 times [2022-11-02 21:00:13,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:13,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678188850] [2022-11-02 21:00:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:14,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:14,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:14,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678188850] [2022-11-02 21:00:14,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678188850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:14,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:14,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:00:14,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129669800] [2022-11-02 21:00:14,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:14,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:00:14,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:00:14,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:00:14,258 INFO L87 Difference]: Start difference. First operand has 25092 states, 23714 states have (on average 4.070928565404403) internal successors, (96538), 25091 states have internal predecessors, (96538), 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) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-02 21:00:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:14,897 INFO L93 Difference]: Finished difference Result 19388 states and 72458 transitions. [2022-11-02 21:00:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:00:14,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-11-02 21:00:14,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:15,216 INFO L225 Difference]: With dead ends: 19388 [2022-11-02 21:00:15,216 INFO L226 Difference]: Without dead ends: 19376 [2022-11-02 21:00:15,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:00:15,220 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:15,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:00:15,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19376 states. [2022-11-02 21:00:16,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19376 to 19376. [2022-11-02 21:00:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19376 states, 18544 states have (on average 3.9055220017256254) internal successors, (72424), 19375 states have internal predecessors, (72424), 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) [2022-11-02 21:00:16,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19376 states to 19376 states and 72424 transitions. [2022-11-02 21:00:16,787 INFO L78 Accepts]: Start accepts. Automaton has 19376 states and 72424 transitions. Word has length 4 [2022-11-02 21:00:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:16,793 INFO L495 AbstractCegarLoop]: Abstraction has 19376 states and 72424 transitions. [2022-11-02 21:00:16,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-11-02 21:00:16,793 INFO L276 IsEmpty]: Start isEmpty. Operand 19376 states and 72424 transitions. [2022-11-02 21:00:16,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:00:16,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:16,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:00:16,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:00:16,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_reader1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:16,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:16,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1227016486, now seen corresponding path program 1 times [2022-11-02 21:00:16,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:16,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234517311] [2022-11-02 21:00:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:17,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:17,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234517311] [2022-11-02 21:00:17,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234517311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:17,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:17,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:00:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580270183] [2022-11-02 21:00:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:17,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:17,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:17,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:17,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:17,042 INFO L87 Difference]: Start difference. First operand 19376 states and 72424 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-02 21:00:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:17,904 INFO L93 Difference]: Finished difference Result 23520 states and 88236 transitions. [2022-11-02 21:00:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:17,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-02 21:00:17,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:18,080 INFO L225 Difference]: With dead ends: 23520 [2022-11-02 21:00:18,081 INFO L226 Difference]: Without dead ends: 23520 [2022-11-02 21:00:18,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:18,083 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 58 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:18,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 39 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:18,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23520 states. [2022-11-02 21:00:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23520 to 23310. [2022-11-02 21:00:19,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23310 states, 22524 states have (on average 3.91133901616054) internal successors, (88099), 23309 states have internal predecessors, (88099), 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) [2022-11-02 21:00:20,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23310 states to 23310 states and 88099 transitions. [2022-11-02 21:00:20,009 INFO L78 Accepts]: Start accepts. Automaton has 23310 states and 88099 transitions. Word has length 5 [2022-11-02 21:00:20,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:20,009 INFO L495 AbstractCegarLoop]: Abstraction has 23310 states and 88099 transitions. [2022-11-02 21:00:20,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-02 21:00:20,010 INFO L276 IsEmpty]: Start isEmpty. Operand 23310 states and 88099 transitions. [2022-11-02 21:00:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:00:20,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:20,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:00:20,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:00:20,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_reader1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:20,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1227013318, now seen corresponding path program 1 times [2022-11-02 21:00:20,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:20,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946685407] [2022-11-02 21:00:20,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:20,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:20,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:20,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946685407] [2022-11-02 21:00:20,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946685407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:20,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:20,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:00:20,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095585216] [2022-11-02 21:00:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:20,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:20,120 INFO L87 Difference]: Start difference. First operand 23310 states and 88099 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-02 21:00:20,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:20,630 INFO L93 Difference]: Finished difference Result 13264 states and 47546 transitions. [2022-11-02 21:00:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:20,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-02 21:00:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:20,717 INFO L225 Difference]: With dead ends: 13264 [2022-11-02 21:00:20,717 INFO L226 Difference]: Without dead ends: 13262 [2022-11-02 21:00:20,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:00:20,722 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 58 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:20,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 37 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13262 states. [2022-11-02 21:00:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13262 to 13246. [2022-11-02 21:00:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13246 states, 12794 states have (on average 3.7151008285133655) internal successors, (47531), 13245 states have internal predecessors, (47531), 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) [2022-11-02 21:00:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13246 states to 13246 states and 47531 transitions. [2022-11-02 21:00:21,552 INFO L78 Accepts]: Start accepts. Automaton has 13246 states and 47531 transitions. Word has length 5 [2022-11-02 21:00:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:21,553 INFO L495 AbstractCegarLoop]: Abstraction has 13246 states and 47531 transitions. [2022-11-02 21:00:21,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-02 21:00:21,554 INFO L276 IsEmpty]: Start isEmpty. Operand 13246 states and 47531 transitions. [2022-11-02 21:00:21,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:00:21,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:21,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:21,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:00:21,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:21,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash -417678709, now seen corresponding path program 1 times [2022-11-02 21:00:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:21,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37942680] [2022-11-02 21:00:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:21,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:21,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:21,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37942680] [2022-11-02 21:00:21,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37942680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:21,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:21,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:21,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669219962] [2022-11-02 21:00:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:21,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:21,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:21,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:21,693 INFO L87 Difference]: Start difference. First operand 13246 states and 47531 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 21:00:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:22,078 INFO L93 Difference]: Finished difference Result 14514 states and 49220 transitions. [2022-11-02 21:00:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:22,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-02 21:00:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:22,160 INFO L225 Difference]: With dead ends: 14514 [2022-11-02 21:00:22,160 INFO L226 Difference]: Without dead ends: 14514 [2022-11-02 21:00:22,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:22,162 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 179 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:22,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 62 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:22,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14514 states. [2022-11-02 21:00:22,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14514 to 13740. [2022-11-02 21:00:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13740 states, 13410 states have (on average 3.6055182699478) internal successors, (48350), 13739 states have internal predecessors, (48350), 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) [2022-11-02 21:00:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13740 states to 13740 states and 48350 transitions. [2022-11-02 21:00:22,956 INFO L78 Accepts]: Start accepts. Automaton has 13740 states and 48350 transitions. Word has length 8 [2022-11-02 21:00:22,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:22,956 INFO L495 AbstractCegarLoop]: Abstraction has 13740 states and 48350 transitions. [2022-11-02 21:00:22,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 21:00:22,957 INFO L276 IsEmpty]: Start isEmpty. Operand 13740 states and 48350 transitions. [2022-11-02 21:00:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:00:22,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:22,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:22,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:00:22,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:22,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:22,959 INFO L85 PathProgramCache]: Analyzing trace with hash -417678708, now seen corresponding path program 1 times [2022-11-02 21:00:22,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:22,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024512122] [2022-11-02 21:00:22,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:22,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:23,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:23,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024512122] [2022-11-02 21:00:23,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024512122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:23,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:23,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170394155] [2022-11-02 21:00:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:23,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:23,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:23,045 INFO L87 Difference]: Start difference. First operand 13740 states and 48350 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 21:00:23,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:23,426 INFO L93 Difference]: Finished difference Result 14016 states and 48432 transitions. [2022-11-02 21:00:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:23,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-02 21:00:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:23,671 INFO L225 Difference]: With dead ends: 14016 [2022-11-02 21:00:23,672 INFO L226 Difference]: Without dead ends: 14016 [2022-11-02 21:00:23,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:23,673 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 132 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:23,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 80 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14016 states. [2022-11-02 21:00:24,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14016 to 13258. [2022-11-02 21:00:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13258 states, 13010 states have (on average 3.6100691775557263) internal successors, (46967), 13257 states have internal predecessors, (46967), 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) [2022-11-02 21:00:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13258 states to 13258 states and 46967 transitions. [2022-11-02 21:00:24,222 INFO L78 Accepts]: Start accepts. Automaton has 13258 states and 46967 transitions. Word has length 8 [2022-11-02 21:00:24,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:24,222 INFO L495 AbstractCegarLoop]: Abstraction has 13258 states and 46967 transitions. [2022-11-02 21:00:24,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-02 21:00:24,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13258 states and 46967 transitions. [2022-11-02 21:00:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:00:24,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:24,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:24,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:00:24,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:24,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash -409974195, now seen corresponding path program 1 times [2022-11-02 21:00:24,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:24,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012593133] [2022-11-02 21:00:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:24,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:24,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:24,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:24,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012593133] [2022-11-02 21:00:24,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012593133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:24,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:24,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:24,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799737207] [2022-11-02 21:00:24,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:24,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:24,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:24,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:24,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:24,342 INFO L87 Difference]: Start difference. First operand 13258 states and 46967 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-02 21:00:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:24,890 INFO L93 Difference]: Finished difference Result 13944 states and 49460 transitions. [2022-11-02 21:00:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-02 21:00:24,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:24,936 INFO L225 Difference]: With dead ends: 13944 [2022-11-02 21:00:24,937 INFO L226 Difference]: Without dead ends: 13936 [2022-11-02 21:00:24,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:24,937 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 68 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:24,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 35 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:24,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13936 states. [2022-11-02 21:00:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13936 to 13826. [2022-11-02 21:00:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13826 states, 13582 states have (on average 3.6170667059343247) internal successors, (49127), 13825 states have internal predecessors, (49127), 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) [2022-11-02 21:00:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13826 states to 13826 states and 49127 transitions. [2022-11-02 21:00:25,393 INFO L78 Accepts]: Start accepts. Automaton has 13826 states and 49127 transitions. Word has length 9 [2022-11-02 21:00:25,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:25,394 INFO L495 AbstractCegarLoop]: Abstraction has 13826 states and 49127 transitions. [2022-11-02 21:00:25,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-02 21:00:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 13826 states and 49127 transitions. [2022-11-02 21:00:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:00:25,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:25,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:25,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:00:25,397 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:25,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:25,397 INFO L85 PathProgramCache]: Analyzing trace with hash -409969574, now seen corresponding path program 1 times [2022-11-02 21:00:25,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:25,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088116876] [2022-11-02 21:00:25,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:25,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088116876] [2022-11-02 21:00:25,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088116876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:25,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:25,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133907897] [2022-11-02 21:00:25,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:25,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:25,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:25,497 INFO L87 Difference]: Start difference. First operand 13826 states and 49127 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-02 21:00:25,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:25,962 INFO L93 Difference]: Finished difference Result 13698 states and 48615 transitions. [2022-11-02 21:00:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:25,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-02 21:00:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:26,026 INFO L225 Difference]: With dead ends: 13698 [2022-11-02 21:00:26,026 INFO L226 Difference]: Without dead ends: 13698 [2022-11-02 21:00:26,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:26,028 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:26,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 31 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13698 states. [2022-11-02 21:00:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13698 to 13698. [2022-11-02 21:00:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13698 states, 13458 states have (on average 3.6123495318769505) internal successors, (48615), 13697 states have internal predecessors, (48615), 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) [2022-11-02 21:00:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 48615 transitions. [2022-11-02 21:00:26,755 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 48615 transitions. Word has length 9 [2022-11-02 21:00:26,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:26,756 INFO L495 AbstractCegarLoop]: Abstraction has 13698 states and 48615 transitions. [2022-11-02 21:00:26,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-02 21:00:26,756 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 48615 transitions. [2022-11-02 21:00:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:00:26,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:26,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:00:26,759 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:26,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1626876344, now seen corresponding path program 1 times [2022-11-02 21:00:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:26,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568834246] [2022-11-02 21:00:26,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:26,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:26,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:26,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568834246] [2022-11-02 21:00:26,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568834246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:26,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:26,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:26,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268521627] [2022-11-02 21:00:26,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:26,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:26,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:26,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:26,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:26,883 INFO L87 Difference]: Start difference. First operand 13698 states and 48615 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-02 21:00:27,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:27,439 INFO L93 Difference]: Finished difference Result 15048 states and 53628 transitions. [2022-11-02 21:00:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:27,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2022-11-02 21:00:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:27,506 INFO L225 Difference]: With dead ends: 15048 [2022-11-02 21:00:27,506 INFO L226 Difference]: Without dead ends: 15048 [2022-11-02 21:00:27,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:27,507 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 162 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:27,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 45 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:27,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15048 states. [2022-11-02 21:00:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15048 to 13570. [2022-11-02 21:00:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13570 states, 13330 states have (on average 3.609827456864216) internal successors, (48119), 13569 states have internal predecessors, (48119), 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) [2022-11-02 21:00:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13570 states to 13570 states and 48119 transitions. [2022-11-02 21:00:28,227 INFO L78 Accepts]: Start accepts. Automaton has 13570 states and 48119 transitions. Word has length 12 [2022-11-02 21:00:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:28,227 INFO L495 AbstractCegarLoop]: Abstraction has 13570 states and 48119 transitions. [2022-11-02 21:00:28,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-02 21:00:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 13570 states and 48119 transitions. [2022-11-02 21:00:28,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:00:28,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:28,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:28,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:00:28,231 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting qrcu_reader2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:28,232 INFO L85 PathProgramCache]: Analyzing trace with hash 492220301, now seen corresponding path program 1 times [2022-11-02 21:00:28,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:28,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378154911] [2022-11-02 21:00:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:28,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:28,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378154911] [2022-11-02 21:00:28,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378154911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:28,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:28,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:28,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417374889] [2022-11-02 21:00:28,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:28,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:28,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:28,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:28,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:28,445 INFO L87 Difference]: Start difference. First operand 13570 states and 48119 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:28,850 INFO L93 Difference]: Finished difference Result 11340 states and 40993 transitions. [2022-11-02 21:00:28,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:28,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-11-02 21:00:28,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:28,908 INFO L225 Difference]: With dead ends: 11340 [2022-11-02 21:00:28,908 INFO L226 Difference]: Without dead ends: 11322 [2022-11-02 21:00:28,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:28,909 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 100 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:28,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 80 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:28,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11322 states. [2022-11-02 21:00:29,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11322 to 10944. [2022-11-02 21:00:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10944 states, 10753 states have (on average 3.608667348646889) internal successors, (38804), 10943 states have internal predecessors, (38804), 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) [2022-11-02 21:00:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10944 states to 10944 states and 38804 transitions. [2022-11-02 21:00:29,358 INFO L78 Accepts]: Start accepts. Automaton has 10944 states and 38804 transitions. Word has length 13 [2022-11-02 21:00:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:29,359 INFO L495 AbstractCegarLoop]: Abstraction has 10944 states and 38804 transitions. [2022-11-02 21:00:29,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10944 states and 38804 transitions. [2022-11-02 21:00:29,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:00:29,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:29,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:29,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:00:29,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash 483098580, now seen corresponding path program 1 times [2022-11-02 21:00:29,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:29,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410480295] [2022-11-02 21:00:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:29,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:29,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:29,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410480295] [2022-11-02 21:00:29,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410480295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:29,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:29,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:29,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163155251] [2022-11-02 21:00:29,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:29,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:29,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:29,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:29,444 INFO L87 Difference]: Start difference. First operand 10944 states and 38804 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:29,873 INFO L93 Difference]: Finished difference Result 10570 states and 36658 transitions. [2022-11-02 21:00:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:29,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-11-02 21:00:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:29,922 INFO L225 Difference]: With dead ends: 10570 [2022-11-02 21:00:29,922 INFO L226 Difference]: Without dead ends: 10546 [2022-11-02 21:00:29,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:29,923 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 193 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:29,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 75 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2022-11-02 21:00:30,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 9160. [2022-11-02 21:00:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9160 states, 9022 states have (on average 3.610729328308579) internal successors, (32576), 9159 states have internal predecessors, (32576), 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) [2022-11-02 21:00:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9160 states to 9160 states and 32576 transitions. [2022-11-02 21:00:30,326 INFO L78 Accepts]: Start accepts. Automaton has 9160 states and 32576 transitions. Word has length 13 [2022-11-02 21:00:30,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:30,326 INFO L495 AbstractCegarLoop]: Abstraction has 9160 states and 32576 transitions. [2022-11-02 21:00:30,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 9160 states and 32576 transitions. [2022-11-02 21:00:30,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:00:30,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:30,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:30,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:00:30,329 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:30,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:30,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1106441902, now seen corresponding path program 1 times [2022-11-02 21:00:30,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:30,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182859843] [2022-11-02 21:00:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:30,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:30,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182859843] [2022-11-02 21:00:30,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182859843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:30,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:30,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:30,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933341742] [2022-11-02 21:00:30,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:30,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:30,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:30,418 INFO L87 Difference]: Start difference. First operand 9160 states and 32576 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:30,850 INFO L93 Difference]: Finished difference Result 9192 states and 32704 transitions. [2022-11-02 21:00:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:30,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-11-02 21:00:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:30,880 INFO L225 Difference]: With dead ends: 9192 [2022-11-02 21:00:30,880 INFO L226 Difference]: Without dead ends: 9192 [2022-11-02 21:00:30,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:30,881 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 108 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:30,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 43 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9192 states. [2022-11-02 21:00:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9192 to 9178. [2022-11-02 21:00:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9178 states, 9040 states have (on average 3.6136061946902656) internal successors, (32667), 9177 states have internal predecessors, (32667), 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) [2022-11-02 21:00:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9178 states to 9178 states and 32667 transitions. [2022-11-02 21:00:31,120 INFO L78 Accepts]: Start accepts. Automaton has 9178 states and 32667 transitions. Word has length 13 [2022-11-02 21:00:31,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:31,120 INFO L495 AbstractCegarLoop]: Abstraction has 9178 states and 32667 transitions. [2022-11-02 21:00:31,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:31,120 INFO L276 IsEmpty]: Start isEmpty. Operand 9178 states and 32667 transitions. [2022-11-02 21:00:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:00:31,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:31,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:31,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:00:31,122 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1106585155, now seen corresponding path program 1 times [2022-11-02 21:00:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:31,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622310655] [2022-11-02 21:00:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:31,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:31,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:31,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622310655] [2022-11-02 21:00:31,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622310655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:31,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:31,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:31,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870872054] [2022-11-02 21:00:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:31,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:31,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:31,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:31,225 INFO L87 Difference]: Start difference. First operand 9178 states and 32667 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:31,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:31,698 INFO L93 Difference]: Finished difference Result 9610 states and 34251 transitions. [2022-11-02 21:00:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:31,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-11-02 21:00:31,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:31,738 INFO L225 Difference]: With dead ends: 9610 [2022-11-02 21:00:31,738 INFO L226 Difference]: Without dead ends: 9610 [2022-11-02 21:00:31,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:31,739 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 95 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:31,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 45 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:31,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9610 states. [2022-11-02 21:00:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9610 to 9442. [2022-11-02 21:00:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9442 states, 9304 states have (on average 3.6194110060189164) internal successors, (33675), 9441 states have internal predecessors, (33675), 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) [2022-11-02 21:00:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9442 states to 9442 states and 33675 transitions. [2022-11-02 21:00:32,004 INFO L78 Accepts]: Start accepts. Automaton has 9442 states and 33675 transitions. Word has length 13 [2022-11-02 21:00:32,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:32,005 INFO L495 AbstractCegarLoop]: Abstraction has 9442 states and 33675 transitions. [2022-11-02 21:00:32,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 9442 states and 33675 transitions. [2022-11-02 21:00:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:00:32,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:32,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:32,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:00:32,009 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:32,009 INFO L85 PathProgramCache]: Analyzing trace with hash 826041641, now seen corresponding path program 2 times [2022-11-02 21:00:32,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:32,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815344451] [2022-11-02 21:00:32,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:32,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:32,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:32,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815344451] [2022-11-02 21:00:32,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815344451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:32,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:32,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:32,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232320214] [2022-11-02 21:00:32,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:32,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:32,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:32,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:32,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:32,104 INFO L87 Difference]: Start difference. First operand 9442 states and 33675 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:32,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:32,487 INFO L93 Difference]: Finished difference Result 9478 states and 33765 transitions. [2022-11-02 21:00:32,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:32,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-11-02 21:00:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:32,522 INFO L225 Difference]: With dead ends: 9478 [2022-11-02 21:00:32,522 INFO L226 Difference]: Without dead ends: 9478 [2022-11-02 21:00:32,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:32,523 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 56 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:32,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 50 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:32,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9478 states. [2022-11-02 21:00:32,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9478 to 9046. [2022-11-02 21:00:32,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9046 states, 8908 states have (on average 3.6125954198473282) internal successors, (32181), 9045 states have internal predecessors, (32181), 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) [2022-11-02 21:00:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9046 states to 9046 states and 32181 transitions. [2022-11-02 21:00:32,777 INFO L78 Accepts]: Start accepts. Automaton has 9046 states and 32181 transitions. Word has length 13 [2022-11-02 21:00:32,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:32,777 INFO L495 AbstractCegarLoop]: Abstraction has 9046 states and 32181 transitions. [2022-11-02 21:00:32,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-02 21:00:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 9046 states and 32181 transitions. [2022-11-02 21:00:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:00:32,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:32,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:32,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:00:32,781 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting qrcu_reader1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:32,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1807508954, now seen corresponding path program 1 times [2022-11-02 21:00:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:32,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681994116] [2022-11-02 21:00:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:32,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:32,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:32,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681994116] [2022-11-02 21:00:32,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681994116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:32,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:32,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:32,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160446989] [2022-11-02 21:00:32,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:32,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:32,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:32,919 INFO L87 Difference]: Start difference. First operand 9046 states and 32181 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-02 21:00:33,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:33,178 INFO L93 Difference]: Finished difference Result 8672 states and 30982 transitions. [2022-11-02 21:00:33,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:00:33,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-11-02 21:00:33,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:33,212 INFO L225 Difference]: With dead ends: 8672 [2022-11-02 21:00:33,212 INFO L226 Difference]: Without dead ends: 8646 [2022-11-02 21:00:33,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:33,213 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 135 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:33,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 54 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:00:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2022-11-02 21:00:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8628. [2022-11-02 21:00:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8628 states, 8528 states have (on average 3.6171435272045027) internal successors, (30847), 8627 states have internal predecessors, (30847), 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) [2022-11-02 21:00:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8628 states to 8628 states and 30847 transitions. [2022-11-02 21:00:33,434 INFO L78 Accepts]: Start accepts. Automaton has 8628 states and 30847 transitions. Word has length 13 [2022-11-02 21:00:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:33,434 INFO L495 AbstractCegarLoop]: Abstraction has 8628 states and 30847 transitions. [2022-11-02 21:00:33,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-02 21:00:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 8628 states and 30847 transitions. [2022-11-02 21:00:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:00:33,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:33,439 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:33,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:00:33,440 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:33,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:33,440 INFO L85 PathProgramCache]: Analyzing trace with hash -887942189, now seen corresponding path program 1 times [2022-11-02 21:00:33,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:33,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918810910] [2022-11-02 21:00:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:33,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:33,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:33,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918810910] [2022-11-02 21:00:33,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918810910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:33,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:33,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:33,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374990801] [2022-11-02 21:00:33,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:33,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:33,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:33,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:33,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:33,675 INFO L87 Difference]: Start difference. First operand 8628 states and 30847 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-02 21:00:34,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:34,414 INFO L93 Difference]: Finished difference Result 11138 states and 39992 transitions. [2022-11-02 21:00:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:00:34,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-11-02 21:00:34,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:34,449 INFO L225 Difference]: With dead ends: 11138 [2022-11-02 21:00:34,449 INFO L226 Difference]: Without dead ends: 11138 [2022-11-02 21:00:34,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:00:34,450 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 226 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:34,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 73 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:00:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11138 states. [2022-11-02 21:00:34,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11138 to 9098. [2022-11-02 21:00:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9098 states, 9002 states have (on average 3.617085092201733) internal successors, (32561), 9097 states have internal predecessors, (32561), 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) [2022-11-02 21:00:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9098 states to 9098 states and 32561 transitions. [2022-11-02 21:00:34,698 INFO L78 Accepts]: Start accepts. Automaton has 9098 states and 32561 transitions. Word has length 15 [2022-11-02 21:00:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:34,699 INFO L495 AbstractCegarLoop]: Abstraction has 9098 states and 32561 transitions. [2022-11-02 21:00:34,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-02 21:00:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 9098 states and 32561 transitions. [2022-11-02 21:00:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:00:34,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:34,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:34,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:00:34,705 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:34,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:34,706 INFO L85 PathProgramCache]: Analyzing trace with hash 191963800, now seen corresponding path program 1 times [2022-11-02 21:00:34,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:34,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331776480] [2022-11-02 21:00:34,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:34,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:34,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:34,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331776480] [2022-11-02 21:00:34,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331776480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:34,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:34,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:34,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532294950] [2022-11-02 21:00:34,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:34,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:34,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:34,833 INFO L87 Difference]: Start difference. First operand 9098 states and 32561 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-02 21:00:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:35,350 INFO L93 Difference]: Finished difference Result 9158 states and 32759 transitions. [2022-11-02 21:00:35,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:35,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-02 21:00:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:35,384 INFO L225 Difference]: With dead ends: 9158 [2022-11-02 21:00:35,384 INFO L226 Difference]: Without dead ends: 9158 [2022-11-02 21:00:35,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:35,385 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 150 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:35,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 56 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9158 states. [2022-11-02 21:00:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9158 to 8990. [2022-11-02 21:00:35,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8990 states, 8894 states have (on average 3.614459185968068) internal successors, (32147), 8989 states have internal predecessors, (32147), 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) [2022-11-02 21:00:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 32147 transitions. [2022-11-02 21:00:35,625 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 32147 transitions. Word has length 15 [2022-11-02 21:00:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:35,626 INFO L495 AbstractCegarLoop]: Abstraction has 8990 states and 32147 transitions. [2022-11-02 21:00:35,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-02 21:00:35,626 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 32147 transitions. [2022-11-02 21:00:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:00:35,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:35,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:35,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:00:35,632 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:35,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:35,633 INFO L85 PathProgramCache]: Analyzing trace with hash -473388724, now seen corresponding path program 1 times [2022-11-02 21:00:35,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:35,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332626564] [2022-11-02 21:00:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:35,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:35,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:35,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332626564] [2022-11-02 21:00:35,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332626564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:35,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:35,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31893920] [2022-11-02 21:00:35,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:35,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:35,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:35,793 INFO L87 Difference]: Start difference. First operand 8990 states and 32147 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-02 21:00:36,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:36,206 INFO L93 Difference]: Finished difference Result 9886 states and 34579 transitions. [2022-11-02 21:00:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:36,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-11-02 21:00:36,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:36,255 INFO L225 Difference]: With dead ends: 9886 [2022-11-02 21:00:36,255 INFO L226 Difference]: Without dead ends: 9814 [2022-11-02 21:00:36,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:36,256 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 118 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:36,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 43 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9814 states. [2022-11-02 21:00:36,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9814 to 9198. [2022-11-02 21:00:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9198 states, 9102 states have (on average 3.5978905735003295) internal successors, (32748), 9197 states have internal predecessors, (32748), 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) [2022-11-02 21:00:36,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9198 states to 9198 states and 32748 transitions. [2022-11-02 21:00:36,506 INFO L78 Accepts]: Start accepts. Automaton has 9198 states and 32748 transitions. Word has length 15 [2022-11-02 21:00:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:36,507 INFO L495 AbstractCegarLoop]: Abstraction has 9198 states and 32748 transitions. [2022-11-02 21:00:36,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-02 21:00:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 9198 states and 32748 transitions. [2022-11-02 21:00:36,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:00:36,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:36,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:36,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:00:36,513 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:36,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:36,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1601831888, now seen corresponding path program 2 times [2022-11-02 21:00:36,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:36,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573804637] [2022-11-02 21:00:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:36,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:36,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:36,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573804637] [2022-11-02 21:00:36,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573804637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:36,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:36,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:36,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590372106] [2022-11-02 21:00:36,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:36,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:36,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:36,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:36,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:36,694 INFO L87 Difference]: Start difference. First operand 9198 states and 32748 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-02 21:00:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:37,265 INFO L93 Difference]: Finished difference Result 11280 states and 38795 transitions. [2022-11-02 21:00:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:37,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2022-11-02 21:00:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:37,321 INFO L225 Difference]: With dead ends: 11280 [2022-11-02 21:00:37,321 INFO L226 Difference]: Without dead ends: 11280 [2022-11-02 21:00:37,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:37,322 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 237 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:37,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 46 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11280 states. [2022-11-02 21:00:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11280 to 9510. [2022-11-02 21:00:37,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9510 states, 9414 states have (on average 3.608136817505842) internal successors, (33967), 9509 states have internal predecessors, (33967), 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) [2022-11-02 21:00:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9510 states to 9510 states and 33967 transitions. [2022-11-02 21:00:37,600 INFO L78 Accepts]: Start accepts. Automaton has 9510 states and 33967 transitions. Word has length 15 [2022-11-02 21:00:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:37,601 INFO L495 AbstractCegarLoop]: Abstraction has 9510 states and 33967 transitions. [2022-11-02 21:00:37,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-02 21:00:37,601 INFO L276 IsEmpty]: Start isEmpty. Operand 9510 states and 33967 transitions. [2022-11-02 21:00:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 21:00:37,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:37,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:37,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:00:37,607 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:37,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1732678238, now seen corresponding path program 3 times [2022-11-02 21:00:37,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:37,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050386580] [2022-11-02 21:00:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:37,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:37,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:37,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050386580] [2022-11-02 21:00:37,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050386580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:37,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:37,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:37,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660461096] [2022-11-02 21:00:37,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:37,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:37,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:37,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:37,870 INFO L87 Difference]: Start difference. First operand 9510 states and 33967 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-02 21:00:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:38,670 INFO L93 Difference]: Finished difference Result 10662 states and 38614 transitions. [2022-11-02 21:00:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:00:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2022-11-02 21:00:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:38,723 INFO L225 Difference]: With dead ends: 10662 [2022-11-02 21:00:38,723 INFO L226 Difference]: Without dead ends: 10644 [2022-11-02 21:00:38,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:00:38,724 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 218 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:38,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 80 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:00:38,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10644 states. [2022-11-02 21:00:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10644 to 9568. [2022-11-02 21:00:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9568 states, 9476 states have (on average 3.6025749261291686) internal successors, (34138), 9567 states have internal predecessors, (34138), 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) [2022-11-02 21:00:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 34138 transitions. [2022-11-02 21:00:39,074 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 34138 transitions. Word has length 15 [2022-11-02 21:00:39,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:39,074 INFO L495 AbstractCegarLoop]: Abstraction has 9568 states and 34138 transitions. [2022-11-02 21:00:39,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2022-11-02 21:00:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 34138 transitions. [2022-11-02 21:00:39,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:00:39,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:39,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:39,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:00:39,082 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:39,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:39,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1754632349, now seen corresponding path program 1 times [2022-11-02 21:00:39,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:39,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605786313] [2022-11-02 21:00:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:39,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:39,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:39,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605786313] [2022-11-02 21:00:39,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605786313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:39,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:39,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798409249] [2022-11-02 21:00:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:39,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:39,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:39,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:39,252 INFO L87 Difference]: Start difference. First operand 9568 states and 34138 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-02 21:00:39,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:39,827 INFO L93 Difference]: Finished difference Result 10350 states and 36345 transitions. [2022-11-02 21:00:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:00:39,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-02 21:00:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:39,865 INFO L225 Difference]: With dead ends: 10350 [2022-11-02 21:00:39,865 INFO L226 Difference]: Without dead ends: 10350 [2022-11-02 21:00:39,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:39,866 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 195 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:39,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 57 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10350 states. [2022-11-02 21:00:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10350 to 9868. [2022-11-02 21:00:40,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9868 states, 9776 states have (on average 3.5797872340425534) internal successors, (34996), 9867 states have internal predecessors, (34996), 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) [2022-11-02 21:00:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9868 states to 9868 states and 34996 transitions. [2022-11-02 21:00:40,147 INFO L78 Accepts]: Start accepts. Automaton has 9868 states and 34996 transitions. Word has length 16 [2022-11-02 21:00:40,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:40,147 INFO L495 AbstractCegarLoop]: Abstraction has 9868 states and 34996 transitions. [2022-11-02 21:00:40,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-02 21:00:40,148 INFO L276 IsEmpty]: Start isEmpty. Operand 9868 states and 34996 transitions. [2022-11-02 21:00:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:00:40,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:40,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:40,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:00:40,155 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:40,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:40,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1905396509, now seen corresponding path program 2 times [2022-11-02 21:00:40,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:40,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522545255] [2022-11-02 21:00:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:40,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522545255] [2022-11-02 21:00:40,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522545255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:40,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:40,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:40,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877182000] [2022-11-02 21:00:40,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:40,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:40,359 INFO L87 Difference]: Start difference. First operand 9868 states and 34996 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-02 21:00:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:40,996 INFO L93 Difference]: Finished difference Result 10626 states and 37471 transitions. [2022-11-02 21:00:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:00:40,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-02 21:00:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:41,032 INFO L225 Difference]: With dead ends: 10626 [2022-11-02 21:00:41,032 INFO L226 Difference]: Without dead ends: 10622 [2022-11-02 21:00:41,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:41,033 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 220 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:41,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 44 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:00:41,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10622 states. [2022-11-02 21:00:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10622 to 9836. [2022-11-02 21:00:41,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 9744 states have (on average 3.575944170771757) internal successors, (34844), 9835 states have internal predecessors, (34844), 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) [2022-11-02 21:00:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 34844 transitions. [2022-11-02 21:00:41,320 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 34844 transitions. Word has length 16 [2022-11-02 21:00:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:41,320 INFO L495 AbstractCegarLoop]: Abstraction has 9836 states and 34844 transitions. [2022-11-02 21:00:41,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-02 21:00:41,321 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 34844 transitions. [2022-11-02 21:00:41,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:00:41,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:41,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:41,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 21:00:41,327 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:41,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:41,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1616968136, now seen corresponding path program 1 times [2022-11-02 21:00:41,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:41,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200538390] [2022-11-02 21:00:41,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:41,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:41,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:41,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200538390] [2022-11-02 21:00:41,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200538390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:41,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:41,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:41,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566680215] [2022-11-02 21:00:41,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:41,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:41,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:41,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:41,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:41,472 INFO L87 Difference]: Start difference. First operand 9836 states and 34844 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-02 21:00:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:41,991 INFO L93 Difference]: Finished difference Result 10380 states and 36256 transitions. [2022-11-02 21:00:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:00:41,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-11-02 21:00:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:42,025 INFO L225 Difference]: With dead ends: 10380 [2022-11-02 21:00:42,025 INFO L226 Difference]: Without dead ends: 10380 [2022-11-02 21:00:42,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:42,026 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 126 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:42,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 63 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:42,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10380 states. [2022-11-02 21:00:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10380 to 10152. [2022-11-02 21:00:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10152 states, 10060 states have (on average 3.554473161033797) internal successors, (35758), 10151 states have internal predecessors, (35758), 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) [2022-11-02 21:00:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10152 states to 10152 states and 35758 transitions. [2022-11-02 21:00:42,287 INFO L78 Accepts]: Start accepts. Automaton has 10152 states and 35758 transitions. Word has length 16 [2022-11-02 21:00:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:42,287 INFO L495 AbstractCegarLoop]: Abstraction has 10152 states and 35758 transitions. [2022-11-02 21:00:42,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-11-02 21:00:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 10152 states and 35758 transitions. [2022-11-02 21:00:42,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:00:42,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:42,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:42,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 21:00:42,293 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:42,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:42,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1876653896, now seen corresponding path program 2 times [2022-11-02 21:00:42,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:42,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508315601] [2022-11-02 21:00:42,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:42,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:42,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:42,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:42,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508315601] [2022-11-02 21:00:42,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508315601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:42,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:42,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:42,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913302089] [2022-11-02 21:00:42,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:42,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:42,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:42,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:42,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:42,518 INFO L87 Difference]: Start difference. First operand 10152 states and 35758 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-02 21:00:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:43,255 INFO L93 Difference]: Finished difference Result 11950 states and 42198 transitions. [2022-11-02 21:00:43,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:00:43,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2022-11-02 21:00:43,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:43,296 INFO L225 Difference]: With dead ends: 11950 [2022-11-02 21:00:43,296 INFO L226 Difference]: Without dead ends: 11950 [2022-11-02 21:00:43,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:00:43,297 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 201 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:43,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 82 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:00:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11950 states. [2022-11-02 21:00:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11950 to 10388. [2022-11-02 21:00:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10388 states, 10298 states have (on average 3.56146824626141) internal successors, (36676), 10387 states have internal predecessors, (36676), 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) [2022-11-02 21:00:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 36676 transitions. [2022-11-02 21:00:43,578 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 36676 transitions. Word has length 16 [2022-11-02 21:00:43,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:43,579 INFO L495 AbstractCegarLoop]: Abstraction has 10388 states and 36676 transitions. [2022-11-02 21:00:43,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-02 21:00:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 36676 transitions. [2022-11-02 21:00:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:00:43,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:43,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:43,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 21:00:43,584 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash -443864724, now seen corresponding path program 1 times [2022-11-02 21:00:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:43,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593888775] [2022-11-02 21:00:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:43,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593888775] [2022-11-02 21:00:43,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593888775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:43,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:43,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:43,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802902096] [2022-11-02 21:00:43,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:43,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:43,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:43,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:43,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:43,681 INFO L87 Difference]: Start difference. First operand 10388 states and 36676 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-02 21:00:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:44,203 INFO L93 Difference]: Finished difference Result 11170 states and 39476 transitions. [2022-11-02 21:00:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:44,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-11-02 21:00:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:44,254 INFO L225 Difference]: With dead ends: 11170 [2022-11-02 21:00:44,254 INFO L226 Difference]: Without dead ends: 10990 [2022-11-02 21:00:44,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:44,255 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 164 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:44,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 140 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10990 states. [2022-11-02 21:00:44,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10990 to 9442. [2022-11-02 21:00:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9442 states, 9369 states have (on average 3.647027430889102) internal successors, (34169), 9441 states have internal predecessors, (34169), 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) [2022-11-02 21:00:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9442 states to 9442 states and 34169 transitions. [2022-11-02 21:00:44,543 INFO L78 Accepts]: Start accepts. Automaton has 9442 states and 34169 transitions. Word has length 16 [2022-11-02 21:00:44,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:44,544 INFO L495 AbstractCegarLoop]: Abstraction has 9442 states and 34169 transitions. [2022-11-02 21:00:44,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-02 21:00:44,544 INFO L276 IsEmpty]: Start isEmpty. Operand 9442 states and 34169 transitions. [2022-11-02 21:00:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:00:44,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:44,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:44,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 21:00:44,549 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:44,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash -708749641, now seen corresponding path program 3 times [2022-11-02 21:00:44,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:44,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519851737] [2022-11-02 21:00:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:44,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:44,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:44,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519851737] [2022-11-02 21:00:44,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519851737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:44,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:44,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:44,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386275453] [2022-11-02 21:00:44,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:44,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:44,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:44,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:44,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:44,676 INFO L87 Difference]: Start difference. First operand 9442 states and 34169 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-02 21:00:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:45,051 INFO L93 Difference]: Finished difference Result 9502 states and 34272 transitions. [2022-11-02 21:00:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:45,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2022-11-02 21:00:45,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:45,081 INFO L225 Difference]: With dead ends: 9502 [2022-11-02 21:00:45,082 INFO L226 Difference]: Without dead ends: 9474 [2022-11-02 21:00:45,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:45,084 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 79 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:45,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 51 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9474 states. [2022-11-02 21:00:45,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9474 to 9334. [2022-11-02 21:00:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9334 states, 9265 states have (on average 3.6506206152185645) internal successors, (33823), 9333 states have internal predecessors, (33823), 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) [2022-11-02 21:00:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9334 states to 9334 states and 33823 transitions. [2022-11-02 21:00:45,327 INFO L78 Accepts]: Start accepts. Automaton has 9334 states and 33823 transitions. Word has length 16 [2022-11-02 21:00:45,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:45,327 INFO L495 AbstractCegarLoop]: Abstraction has 9334 states and 33823 transitions. [2022-11-02 21:00:45,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-11-02 21:00:45,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9334 states and 33823 transitions. [2022-11-02 21:00:45,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:00:45,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:45,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:45,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 21:00:45,333 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:45,333 INFO L85 PathProgramCache]: Analyzing trace with hash 314209483, now seen corresponding path program 1 times [2022-11-02 21:00:45,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:45,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146552053] [2022-11-02 21:00:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:45,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:45,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:45,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146552053] [2022-11-02 21:00:45,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146552053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:45,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:45,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769430077] [2022-11-02 21:00:45,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:45,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:45,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:45,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:45,565 INFO L87 Difference]: Start difference. First operand 9334 states and 33823 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-02 21:00:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:46,211 INFO L93 Difference]: Finished difference Result 10994 states and 39999 transitions. [2022-11-02 21:00:46,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:00:46,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 16 [2022-11-02 21:00:46,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:46,237 INFO L225 Difference]: With dead ends: 10994 [2022-11-02 21:00:46,237 INFO L226 Difference]: Without dead ends: 10994 [2022-11-02 21:00:46,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:00:46,238 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 173 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:46,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 85 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:00:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10994 states. [2022-11-02 21:00:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10994 to 9872. [2022-11-02 21:00:46,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9872 states, 9806 states have (on average 3.6468488680399753) internal successors, (35761), 9871 states have internal predecessors, (35761), 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) [2022-11-02 21:00:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9872 states to 9872 states and 35761 transitions. [2022-11-02 21:00:46,437 INFO L78 Accepts]: Start accepts. Automaton has 9872 states and 35761 transitions. Word has length 16 [2022-11-02 21:00:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:46,437 INFO L495 AbstractCegarLoop]: Abstraction has 9872 states and 35761 transitions. [2022-11-02 21:00:46,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-02 21:00:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9872 states and 35761 transitions. [2022-11-02 21:00:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-02 21:00:46,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:46,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:46,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 21:00:46,443 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting qrcu_reader1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:46,444 INFO L85 PathProgramCache]: Analyzing trace with hash 411401032, now seen corresponding path program 1 times [2022-11-02 21:00:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:46,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336789733] [2022-11-02 21:00:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:46,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:46,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336789733] [2022-11-02 21:00:46,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336789733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:46,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:46,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:46,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415182155] [2022-11-02 21:00:46,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:46,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:46,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:46,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:46,524 INFO L87 Difference]: Start difference. First operand 9872 states and 35761 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 21:00:46,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:46,862 INFO L93 Difference]: Finished difference Result 10184 states and 35363 transitions. [2022-11-02 21:00:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:46,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-02 21:00:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:46,888 INFO L225 Difference]: With dead ends: 10184 [2022-11-02 21:00:46,888 INFO L226 Difference]: Without dead ends: 10008 [2022-11-02 21:00:46,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:46,889 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 78 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:46,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 45 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:46,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10008 states. [2022-11-02 21:00:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10008 to 8508. [2022-11-02 21:00:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8508 states, 8446 states have (on average 3.517996684821217) internal successors, (29713), 8507 states have internal predecessors, (29713), 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) [2022-11-02 21:00:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8508 states to 8508 states and 29713 transitions. [2022-11-02 21:00:47,115 INFO L78 Accepts]: Start accepts. Automaton has 8508 states and 29713 transitions. Word has length 17 [2022-11-02 21:00:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:47,115 INFO L495 AbstractCegarLoop]: Abstraction has 8508 states and 29713 transitions. [2022-11-02 21:00:47,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-02 21:00:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 8508 states and 29713 transitions. [2022-11-02 21:00:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:47,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:47,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:47,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 21:00:47,125 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:47,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:47,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1831664723, now seen corresponding path program 1 times [2022-11-02 21:00:47,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:47,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917800795] [2022-11-02 21:00:47,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:47,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:47,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:47,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917800795] [2022-11-02 21:00:47,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917800795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:47,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:47,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:47,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60371736] [2022-11-02 21:00:47,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:47,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:47,300 INFO L87 Difference]: Start difference. First operand 8508 states and 29713 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:47,723 INFO L93 Difference]: Finished difference Result 9186 states and 32930 transitions. [2022-11-02 21:00:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-02 21:00:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:47,754 INFO L225 Difference]: With dead ends: 9186 [2022-11-02 21:00:47,754 INFO L226 Difference]: Without dead ends: 9186 [2022-11-02 21:00:47,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:00:47,755 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 150 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:47,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 57 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9186 states. [2022-11-02 21:00:47,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9186 to 8460. [2022-11-02 21:00:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8460 states, 8398 states have (on average 3.520957370802572) internal successors, (29569), 8459 states have internal predecessors, (29569), 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) [2022-11-02 21:00:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8460 states to 8460 states and 29569 transitions. [2022-11-02 21:00:47,990 INFO L78 Accepts]: Start accepts. Automaton has 8460 states and 29569 transitions. Word has length 18 [2022-11-02 21:00:47,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:47,991 INFO L495 AbstractCegarLoop]: Abstraction has 8460 states and 29569 transitions. [2022-11-02 21:00:47,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:47,991 INFO L276 IsEmpty]: Start isEmpty. Operand 8460 states and 29569 transitions. [2022-11-02 21:00:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:47,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:47,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:47,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 21:00:47,999 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:47,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1541923074, now seen corresponding path program 1 times [2022-11-02 21:00:48,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:48,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428499926] [2022-11-02 21:00:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:48,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:48,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:48,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428499926] [2022-11-02 21:00:48,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428499926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:48,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:48,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:48,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650444193] [2022-11-02 21:00:48,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:48,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:48,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:48,098 INFO L87 Difference]: Start difference. First operand 8460 states and 29569 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-11-02 21:00:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:48,470 INFO L93 Difference]: Finished difference Result 9066 states and 31336 transitions. [2022-11-02 21:00:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:48,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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 18 [2022-11-02 21:00:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:48,496 INFO L225 Difference]: With dead ends: 9066 [2022-11-02 21:00:48,497 INFO L226 Difference]: Without dead ends: 9066 [2022-11-02 21:00:48,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:48,498 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 92 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:48,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 61 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9066 states. [2022-11-02 21:00:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9066 to 8616. [2022-11-02 21:00:48,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8616 states, 8554 states have (on average 3.513444002805705) internal successors, (30054), 8615 states have internal predecessors, (30054), 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) [2022-11-02 21:00:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 30054 transitions. [2022-11-02 21:00:48,715 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 30054 transitions. Word has length 18 [2022-11-02 21:00:48,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:48,716 INFO L495 AbstractCegarLoop]: Abstraction has 8616 states and 30054 transitions. [2022-11-02 21:00:48,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-11-02 21:00:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 30054 transitions. [2022-11-02 21:00:48,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:48,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:48,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:48,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 21:00:48,723 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:48,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash -945509602, now seen corresponding path program 2 times [2022-11-02 21:00:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:48,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040714685] [2022-11-02 21:00:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:48,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:48,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040714685] [2022-11-02 21:00:48,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040714685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:48,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:48,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:48,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523456363] [2022-11-02 21:00:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:48,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:48,904 INFO L87 Difference]: Start difference. First operand 8616 states and 30054 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:49,455 INFO L93 Difference]: Finished difference Result 9222 states and 32555 transitions. [2022-11-02 21:00:49,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:00:49,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-02 21:00:49,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:49,497 INFO L225 Difference]: With dead ends: 9222 [2022-11-02 21:00:49,497 INFO L226 Difference]: Without dead ends: 9222 [2022-11-02 21:00:49,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:00:49,498 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 209 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:49,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 69 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9222 states. [2022-11-02 21:00:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9222 to 8580. [2022-11-02 21:00:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8580 states, 8518 states have (on average 3.5133834233388117) internal successors, (29927), 8579 states have internal predecessors, (29927), 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) [2022-11-02 21:00:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8580 states to 8580 states and 29927 transitions. [2022-11-02 21:00:49,794 INFO L78 Accepts]: Start accepts. Automaton has 8580 states and 29927 transitions. Word has length 18 [2022-11-02 21:00:49,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:49,794 INFO L495 AbstractCegarLoop]: Abstraction has 8580 states and 29927 transitions. [2022-11-02 21:00:49,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 8580 states and 29927 transitions. [2022-11-02 21:00:49,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:49,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:49,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:49,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 21:00:49,801 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:49,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:49,802 INFO L85 PathProgramCache]: Analyzing trace with hash -944157382, now seen corresponding path program 3 times [2022-11-02 21:00:49,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:49,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510486042] [2022-11-02 21:00:49,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:49,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:49,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510486042] [2022-11-02 21:00:49,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510486042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:49,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:49,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:49,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777170666] [2022-11-02 21:00:49,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:49,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:49,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:49,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:49,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:49,977 INFO L87 Difference]: Start difference. First operand 8580 states and 29927 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:50,465 INFO L93 Difference]: Finished difference Result 8958 states and 31666 transitions. [2022-11-02 21:00:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:50,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-02 21:00:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:50,494 INFO L225 Difference]: With dead ends: 8958 [2022-11-02 21:00:50,494 INFO L226 Difference]: Without dead ends: 8958 [2022-11-02 21:00:50,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:00:50,495 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 149 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:50,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 74 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:50,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8958 states. [2022-11-02 21:00:50,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8958 to 8442. [2022-11-02 21:00:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8442 states, 8380 states have (on average 3.513603818615752) internal successors, (29444), 8441 states have internal predecessors, (29444), 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) [2022-11-02 21:00:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8442 states to 8442 states and 29444 transitions. [2022-11-02 21:00:50,712 INFO L78 Accepts]: Start accepts. Automaton has 8442 states and 29444 transitions. Word has length 18 [2022-11-02 21:00:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:50,713 INFO L495 AbstractCegarLoop]: Abstraction has 8442 states and 29444 transitions. [2022-11-02 21:00:50,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 8442 states and 29444 transitions. [2022-11-02 21:00:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:50,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:50,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:50,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 21:00:50,722 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:50,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2103091221, now seen corresponding path program 1 times [2022-11-02 21:00:50,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:50,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798548608] [2022-11-02 21:00:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:50,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798548608] [2022-11-02 21:00:50,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798548608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:50,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:50,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:50,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595101258] [2022-11-02 21:00:50,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:50,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:50,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:50,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:50,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:50,893 INFO L87 Difference]: Start difference. First operand 8442 states and 29444 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:51,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:51,525 INFO L93 Difference]: Finished difference Result 9578 states and 32910 transitions. [2022-11-02 21:00:51,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:00:51,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-02 21:00:51,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:51,556 INFO L225 Difference]: With dead ends: 9578 [2022-11-02 21:00:51,556 INFO L226 Difference]: Without dead ends: 9578 [2022-11-02 21:00:51,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:51,557 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 184 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:51,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 67 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:00:51,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2022-11-02 21:00:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 8172. [2022-11-02 21:00:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8172 states, 8110 states have (on average 3.5140567200986434) internal successors, (28499), 8171 states have internal predecessors, (28499), 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) [2022-11-02 21:00:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8172 states to 8172 states and 28499 transitions. [2022-11-02 21:00:51,789 INFO L78 Accepts]: Start accepts. Automaton has 8172 states and 28499 transitions. Word has length 18 [2022-11-02 21:00:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:51,790 INFO L495 AbstractCegarLoop]: Abstraction has 8172 states and 28499 transitions. [2022-11-02 21:00:51,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 8172 states and 28499 transitions. [2022-11-02 21:00:51,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:51,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:51,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:51,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 21:00:51,798 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:51,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2061029725, now seen corresponding path program 2 times [2022-11-02 21:00:51,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:51,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244854148] [2022-11-02 21:00:51,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:51,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:51,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244854148] [2022-11-02 21:00:51,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244854148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:51,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:51,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:51,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116890678] [2022-11-02 21:00:51,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:51,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:51,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:51,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:51,998 INFO L87 Difference]: Start difference. First operand 8172 states and 28499 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:52,586 INFO L93 Difference]: Finished difference Result 9884 states and 34077 transitions. [2022-11-02 21:00:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:00:52,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-11-02 21:00:52,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:52,615 INFO L225 Difference]: With dead ends: 9884 [2022-11-02 21:00:52,615 INFO L226 Difference]: Without dead ends: 9884 [2022-11-02 21:00:52,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:00:52,616 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 387 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:52,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 57 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:52,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2022-11-02 21:00:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 8160. [2022-11-02 21:00:52,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8160 states, 8098 states have (on average 3.5125957026426278) internal successors, (28445), 8159 states have internal predecessors, (28445), 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) [2022-11-02 21:00:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8160 states to 8160 states and 28445 transitions. [2022-11-02 21:00:52,830 INFO L78 Accepts]: Start accepts. Automaton has 8160 states and 28445 transitions. Word has length 18 [2022-11-02 21:00:52,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:52,831 INFO L495 AbstractCegarLoop]: Abstraction has 8160 states and 28445 transitions. [2022-11-02 21:00:52,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-02 21:00:52,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8160 states and 28445 transitions. [2022-11-02 21:00:52,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:00:52,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:52,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:52,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 21:00:52,842 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1526950373, now seen corresponding path program 3 times [2022-11-02 21:00:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:52,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041879376] [2022-11-02 21:00:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:52,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:52,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041879376] [2022-11-02 21:00:52,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041879376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:52,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:52,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52714176] [2022-11-02 21:00:52,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:52,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:52,999 INFO L87 Difference]: Start difference. First operand 8160 states and 28445 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-02 21:00:53,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:53,526 INFO L93 Difference]: Finished difference Result 9136 states and 30931 transitions. [2022-11-02 21:00:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:53,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2022-11-02 21:00:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:53,561 INFO L225 Difference]: With dead ends: 9136 [2022-11-02 21:00:53,561 INFO L226 Difference]: Without dead ends: 9130 [2022-11-02 21:00:53,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:00:53,562 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 296 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:53,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 55 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:00:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9130 states. [2022-11-02 21:00:53,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9130 to 7872. [2022-11-02 21:00:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7872 states, 7806 states have (on average 3.467973353830387) internal successors, (27071), 7871 states have internal predecessors, (27071), 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) [2022-11-02 21:00:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7872 states to 7872 states and 27071 transitions. [2022-11-02 21:00:53,811 INFO L78 Accepts]: Start accepts. Automaton has 7872 states and 27071 transitions. Word has length 18 [2022-11-02 21:00:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:53,811 INFO L495 AbstractCegarLoop]: Abstraction has 7872 states and 27071 transitions. [2022-11-02 21:00:53,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-02 21:00:53,812 INFO L276 IsEmpty]: Start isEmpty. Operand 7872 states and 27071 transitions. [2022-11-02 21:00:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:00:53,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:53,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 21:00:53,822 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:53,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1955039344, now seen corresponding path program 1 times [2022-11-02 21:00:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:53,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722751678] [2022-11-02 21:00:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:53,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:54,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722751678] [2022-11-02 21:00:54,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722751678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:54,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:54,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:00:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100795770] [2022-11-02 21:00:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:54,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:00:54,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:54,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:00:54,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:54,057 INFO L87 Difference]: Start difference. First operand 7872 states and 27071 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-11-02 21:00:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:54,816 INFO L93 Difference]: Finished difference Result 9300 states and 32207 transitions. [2022-11-02 21:00:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:00:54,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2022-11-02 21:00:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:54,848 INFO L225 Difference]: With dead ends: 9300 [2022-11-02 21:00:54,848 INFO L226 Difference]: Without dead ends: 9300 [2022-11-02 21:00:54,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:00:54,849 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 152 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:54,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 101 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:00:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9300 states. [2022-11-02 21:00:55,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9300 to 8154. [2022-11-02 21:00:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8154 states, 8088 states have (on average 3.460929772502473) internal successors, (27992), 8153 states have internal predecessors, (27992), 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) [2022-11-02 21:00:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8154 states to 8154 states and 27992 transitions. [2022-11-02 21:00:55,087 INFO L78 Accepts]: Start accepts. Automaton has 8154 states and 27992 transitions. Word has length 19 [2022-11-02 21:00:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:55,087 INFO L495 AbstractCegarLoop]: Abstraction has 8154 states and 27992 transitions. [2022-11-02 21:00:55,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-11-02 21:00:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 8154 states and 27992 transitions. [2022-11-02 21:00:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 21:00:55,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:55,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:55,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-02 21:00:55,097 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:55,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash 514404150, now seen corresponding path program 1 times [2022-11-02 21:00:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:55,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140480469] [2022-11-02 21:00:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:55,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:55,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140480469] [2022-11-02 21:00:55,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140480469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:55,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:55,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:00:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211214434] [2022-11-02 21:00:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:55,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:00:55,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:55,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:00:55,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:00:55,305 INFO L87 Difference]: Start difference. First operand 8154 states and 27992 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-11-02 21:00:55,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:55,927 INFO L93 Difference]: Finished difference Result 8502 states and 29708 transitions. [2022-11-02 21:00:55,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:55,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2022-11-02 21:00:55,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:55,952 INFO L225 Difference]: With dead ends: 8502 [2022-11-02 21:00:55,952 INFO L226 Difference]: Without dead ends: 8502 [2022-11-02 21:00:55,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:55,953 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 136 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:55,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 69 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:00:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8502 states. [2022-11-02 21:00:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8502 to 7524. [2022-11-02 21:00:56,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 7458 states have (on average 3.466747117189595) internal successors, (25855), 7523 states have internal predecessors, (25855), 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) [2022-11-02 21:00:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 25855 transitions. [2022-11-02 21:00:56,113 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 25855 transitions. Word has length 19 [2022-11-02 21:00:56,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:56,113 INFO L495 AbstractCegarLoop]: Abstraction has 7524 states and 25855 transitions. [2022-11-02 21:00:56,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-11-02 21:00:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 25855 transitions. [2022-11-02 21:00:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 21:00:56,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:56,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 21:00:56,124 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2025523941, now seen corresponding path program 1 times [2022-11-02 21:00:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:56,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724317351] [2022-11-02 21:00:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:56,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:56,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:56,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724317351] [2022-11-02 21:00:56,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724317351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:56,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:56,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:56,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55024432] [2022-11-02 21:00:56,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:56,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:56,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:56,202 INFO L87 Difference]: Start difference. First operand 7524 states and 25855 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-02 21:00:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:56,487 INFO L93 Difference]: Finished difference Result 8934 states and 31341 transitions. [2022-11-02 21:00:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:56,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2022-11-02 21:00:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:56,519 INFO L225 Difference]: With dead ends: 8934 [2022-11-02 21:00:56,520 INFO L226 Difference]: Without dead ends: 8910 [2022-11-02 21:00:56,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:56,521 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 135 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:56,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 68 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:00:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8910 states. [2022-11-02 21:00:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8910 to 7150. [2022-11-02 21:00:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7150 states, 7091 states have (on average 3.4992243689183473) internal successors, (24813), 7149 states have internal predecessors, (24813), 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) [2022-11-02 21:00:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 24813 transitions. [2022-11-02 21:00:56,750 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 24813 transitions. Word has length 20 [2022-11-02 21:00:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:56,750 INFO L495 AbstractCegarLoop]: Abstraction has 7150 states and 24813 transitions. [2022-11-02 21:00:56,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-02 21:00:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 24813 transitions. [2022-11-02 21:00:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 21:00:56,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:56,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:56,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 21:00:56,758 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting qrcu_reader2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:56,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:56,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1660280347, now seen corresponding path program 1 times [2022-11-02 21:00:56,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:56,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326590705] [2022-11-02 21:00:56,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:56,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:56,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:56,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326590705] [2022-11-02 21:00:56,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326590705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:56,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:56,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:00:56,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571518523] [2022-11-02 21:00:56,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:56,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:56,840 INFO L87 Difference]: Start difference. First operand 7150 states and 24813 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-02 21:00:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,174 INFO L93 Difference]: Finished difference Result 7714 states and 26649 transitions. [2022-11-02 21:00:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-11-02 21:00:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,194 INFO L225 Difference]: With dead ends: 7714 [2022-11-02 21:00:57,194 INFO L226 Difference]: Without dead ends: 7714 [2022-11-02 21:00:57,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:57,194 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 184 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:57,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 69 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:00:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7714 states. [2022-11-02 21:00:57,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7714 to 7326. [2022-11-02 21:00:57,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7326 states, 7275 states have (on average 3.5351202749140893) internal successors, (25718), 7325 states have internal predecessors, (25718), 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) [2022-11-02 21:00:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 25718 transitions. [2022-11-02 21:00:57,336 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 25718 transitions. Word has length 20 [2022-11-02 21:00:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:57,336 INFO L495 AbstractCegarLoop]: Abstraction has 7326 states and 25718 transitions. [2022-11-02 21:00:57,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-02 21:00:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 25718 transitions. [2022-11-02 21:00:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-02 21:00:57,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:57,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:57,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 21:00:57,345 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:57,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1394991122, now seen corresponding path program 1 times [2022-11-02 21:00:57,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:57,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684088836] [2022-11-02 21:00:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:57,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684088836] [2022-11-02 21:00:57,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684088836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:57,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:57,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:00:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106265968] [2022-11-02 21:00:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:00:57,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:57,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:00:57,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:00:57,414 INFO L87 Difference]: Start difference. First operand 7326 states and 25718 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-02 21:00:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:57,679 INFO L93 Difference]: Finished difference Result 8604 states and 30656 transitions. [2022-11-02 21:00:57,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:57,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2022-11-02 21:00:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:57,707 INFO L225 Difference]: With dead ends: 8604 [2022-11-02 21:00:57,707 INFO L226 Difference]: Without dead ends: 8532 [2022-11-02 21:00:57,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:57,709 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 118 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:57,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 77 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:00:57,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8532 states. [2022-11-02 21:00:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8532 to 7530. [2022-11-02 21:00:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7530 states, 7484 states have (on average 3.5271245323356495) internal successors, (26397), 7529 states have internal predecessors, (26397), 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) [2022-11-02 21:00:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 26397 transitions. [2022-11-02 21:00:57,918 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 26397 transitions. Word has length 20 [2022-11-02 21:00:57,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:57,919 INFO L495 AbstractCegarLoop]: Abstraction has 7530 states and 26397 transitions. [2022-11-02 21:00:57,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-11-02 21:00:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 26397 transitions. [2022-11-02 21:00:57,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:00:57,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:57,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:57,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 21:00:57,929 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:57,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,930 INFO L85 PathProgramCache]: Analyzing trace with hash 108157843, now seen corresponding path program 1 times [2022-11-02 21:00:57,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:57,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728089497] [2022-11-02 21:00:57,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:58,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:58,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:58,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728089497] [2022-11-02 21:00:58,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728089497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:58,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:58,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:00:58,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451304012] [2022-11-02 21:00:58,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:58,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:00:58,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:58,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:00:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:00:58,230 INFO L87 Difference]: Start difference. First operand 7530 states and 26397 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-11-02 21:00:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:59,360 INFO L93 Difference]: Finished difference Result 10036 states and 35130 transitions. [2022-11-02 21:00:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:00:59,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 21 [2022-11-02 21:00:59,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:59,386 INFO L225 Difference]: With dead ends: 10036 [2022-11-02 21:00:59,386 INFO L226 Difference]: Without dead ends: 10036 [2022-11-02 21:00:59,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:00:59,387 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 413 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:59,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 65 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:00:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2022-11-02 21:00:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 8924. [2022-11-02 21:00:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8924 states, 8878 states have (on average 3.5013516557783286) internal successors, (31085), 8923 states have internal predecessors, (31085), 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) [2022-11-02 21:00:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8924 states to 8924 states and 31085 transitions. [2022-11-02 21:00:59,582 INFO L78 Accepts]: Start accepts. Automaton has 8924 states and 31085 transitions. Word has length 21 [2022-11-02 21:00:59,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:59,582 INFO L495 AbstractCegarLoop]: Abstraction has 8924 states and 31085 transitions. [2022-11-02 21:00:59,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-11-02 21:00:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 8924 states and 31085 transitions. [2022-11-02 21:00:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:00:59,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:59,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:00:59,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-02 21:00:59,594 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:00:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash -140538135, now seen corresponding path program 2 times [2022-11-02 21:00:59,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:59,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865528503] [2022-11-02 21:00:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:59,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:59,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:59,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865528503] [2022-11-02 21:00:59,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865528503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:59,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:59,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:59,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57628207] [2022-11-02 21:00:59,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:59,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:00:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:59,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:00:59,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:59,833 INFO L87 Difference]: Start difference. First operand 8924 states and 31085 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-02 21:01:00,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:00,563 INFO L93 Difference]: Finished difference Result 11708 states and 39660 transitions. [2022-11-02 21:01:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:00,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2022-11-02 21:01:00,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:00,611 INFO L225 Difference]: With dead ends: 11708 [2022-11-02 21:01:00,611 INFO L226 Difference]: Without dead ends: 11708 [2022-11-02 21:01:00,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:00,612 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 196 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:00,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 104 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:00,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2022-11-02 21:01:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 8834. [2022-11-02 21:01:00,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8834 states, 8788 states have (on average 3.492717341829768) internal successors, (30694), 8833 states have internal predecessors, (30694), 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) [2022-11-02 21:01:00,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8834 states to 8834 states and 30694 transitions. [2022-11-02 21:01:00,886 INFO L78 Accepts]: Start accepts. Automaton has 8834 states and 30694 transitions. Word has length 21 [2022-11-02 21:01:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:00,886 INFO L495 AbstractCegarLoop]: Abstraction has 8834 states and 30694 transitions. [2022-11-02 21:01:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-02 21:01:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 8834 states and 30694 transitions. [2022-11-02 21:01:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:01:00,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:00,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:00,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-02 21:01:00,898 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:00,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:00,898 INFO L85 PathProgramCache]: Analyzing trace with hash -140524185, now seen corresponding path program 3 times [2022-11-02 21:01:00,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:00,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217340342] [2022-11-02 21:01:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:01,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:01,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217340342] [2022-11-02 21:01:01,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217340342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:01,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:01,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:01,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998182111] [2022-11-02 21:01:01,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:01,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:01,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:01,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:01,099 INFO L87 Difference]: Start difference. First operand 8834 states and 30694 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-02 21:01:01,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:01,768 INFO L93 Difference]: Finished difference Result 10620 states and 36556 transitions. [2022-11-02 21:01:01,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:01,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2022-11-02 21:01:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:01,796 INFO L225 Difference]: With dead ends: 10620 [2022-11-02 21:01:01,796 INFO L226 Difference]: Without dead ends: 10620 [2022-11-02 21:01:01,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:01:01,797 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 261 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:01,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 78 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:01,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10620 states. [2022-11-02 21:01:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10620 to 8490. [2022-11-02 21:01:01,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8490 states, 8444 states have (on average 3.523685457129323) internal successors, (29754), 8489 states have internal predecessors, (29754), 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) [2022-11-02 21:01:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 29754 transitions. [2022-11-02 21:01:01,971 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 29754 transitions. Word has length 21 [2022-11-02 21:01:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:01,972 INFO L495 AbstractCegarLoop]: Abstraction has 8490 states and 29754 transitions. [2022-11-02 21:01:01,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-02 21:01:01,972 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 29754 transitions. [2022-11-02 21:01:01,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:01:01,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:01,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:01,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 21:01:01,979 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:01,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1522438075, now seen corresponding path program 4 times [2022-11-02 21:01:01,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:01,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630236009] [2022-11-02 21:01:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:02,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:02,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630236009] [2022-11-02 21:01:02,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630236009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:02,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:02,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:02,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568782449] [2022-11-02 21:01:02,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:02,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:02,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:02,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:02,162 INFO L87 Difference]: Start difference. First operand 8490 states and 29754 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-02 21:01:03,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:03,054 INFO L93 Difference]: Finished difference Result 10946 states and 38529 transitions. [2022-11-02 21:01:03,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:03,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2022-11-02 21:01:03,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:03,087 INFO L225 Difference]: With dead ends: 10946 [2022-11-02 21:01:03,087 INFO L226 Difference]: Without dead ends: 10946 [2022-11-02 21:01:03,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:03,088 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 178 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:03,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 99 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:01:03,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10946 states. [2022-11-02 21:01:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10946 to 8530. [2022-11-02 21:01:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8530 states, 8484 states have (on average 3.520744931636021) internal successors, (29870), 8529 states have internal predecessors, (29870), 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) [2022-11-02 21:01:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8530 states to 8530 states and 29870 transitions. [2022-11-02 21:01:03,290 INFO L78 Accepts]: Start accepts. Automaton has 8530 states and 29870 transitions. Word has length 21 [2022-11-02 21:01:03,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:03,290 INFO L495 AbstractCegarLoop]: Abstraction has 8530 states and 29870 transitions. [2022-11-02 21:01:03,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-02 21:01:03,291 INFO L276 IsEmpty]: Start isEmpty. Operand 8530 states and 29870 transitions. [2022-11-02 21:01:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-02 21:01:03,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:03,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:03,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-02 21:01:03,300 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:03,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:03,300 INFO L85 PathProgramCache]: Analyzing trace with hash -497924411, now seen corresponding path program 5 times [2022-11-02 21:01:03,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:03,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576386825] [2022-11-02 21:01:03,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:03,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:03,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:03,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576386825] [2022-11-02 21:01:03,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576386825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:03,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:03,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:03,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074153471] [2022-11-02 21:01:03,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:03,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:03,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:03,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:03,537 INFO L87 Difference]: Start difference. First operand 8530 states and 29870 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-02 21:01:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:04,210 INFO L93 Difference]: Finished difference Result 10502 states and 38018 transitions. [2022-11-02 21:01:04,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:04,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 21 [2022-11-02 21:01:04,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:04,242 INFO L225 Difference]: With dead ends: 10502 [2022-11-02 21:01:04,242 INFO L226 Difference]: Without dead ends: 10502 [2022-11-02 21:01:04,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:01:04,243 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 162 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:04,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 104 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10502 states. [2022-11-02 21:01:04,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10502 to 7512. [2022-11-02 21:01:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7512 states, 7469 states have (on average 3.529789797831035) internal successors, (26364), 7511 states have internal predecessors, (26364), 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) [2022-11-02 21:01:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7512 states to 7512 states and 26364 transitions. [2022-11-02 21:01:04,420 INFO L78 Accepts]: Start accepts. Automaton has 7512 states and 26364 transitions. Word has length 21 [2022-11-02 21:01:04,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:04,421 INFO L495 AbstractCegarLoop]: Abstraction has 7512 states and 26364 transitions. [2022-11-02 21:01:04,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-02 21:01:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7512 states and 26364 transitions. [2022-11-02 21:01:04,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:04,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:04,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:04,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-02 21:01:04,428 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:04,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:04,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1085626366, now seen corresponding path program 1 times [2022-11-02 21:01:04,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:04,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623266810] [2022-11-02 21:01:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:04,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:04,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623266810] [2022-11-02 21:01:04,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623266810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:04,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:04,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:04,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84260847] [2022-11-02 21:01:04,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:04,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:04,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:04,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:04,583 INFO L87 Difference]: Start difference. First operand 7512 states and 26364 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-02 21:01:05,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:05,141 INFO L93 Difference]: Finished difference Result 9036 states and 30707 transitions. [2022-11-02 21:01:05,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:05,141 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:05,174 INFO L225 Difference]: With dead ends: 9036 [2022-11-02 21:01:05,174 INFO L226 Difference]: Without dead ends: 9036 [2022-11-02 21:01:05,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:05,175 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 215 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:05,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 61 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:05,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9036 states. [2022-11-02 21:01:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9036 to 7560. [2022-11-02 21:01:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7560 states, 7517 states have (on average 3.5244113343089) internal successors, (26493), 7559 states have internal predecessors, (26493), 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) [2022-11-02 21:01:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7560 states to 7560 states and 26493 transitions. [2022-11-02 21:01:05,372 INFO L78 Accepts]: Start accepts. Automaton has 7560 states and 26493 transitions. Word has length 22 [2022-11-02 21:01:05,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:05,372 INFO L495 AbstractCegarLoop]: Abstraction has 7560 states and 26493 transitions. [2022-11-02 21:01:05,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-02 21:01:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 7560 states and 26493 transitions. [2022-11-02 21:01:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:05,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:05,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-02 21:01:05,380 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2128702846, now seen corresponding path program 2 times [2022-11-02 21:01:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:05,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565618452] [2022-11-02 21:01:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:05,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565618452] [2022-11-02 21:01:05,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565618452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:05,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:05,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:05,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590468965] [2022-11-02 21:01:05,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:05,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:05,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:05,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:05,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:05,625 INFO L87 Difference]: Start difference. First operand 7560 states and 26493 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-11-02 21:01:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:06,377 INFO L93 Difference]: Finished difference Result 10206 states and 35753 transitions. [2022-11-02 21:01:06,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:01:06,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:06,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:06,405 INFO L225 Difference]: With dead ends: 10206 [2022-11-02 21:01:06,405 INFO L226 Difference]: Without dead ends: 10206 [2022-11-02 21:01:06,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:01:06,406 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 331 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:06,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 81 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:01:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10206 states. [2022-11-02 21:01:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10206 to 8010. [2022-11-02 21:01:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8010 states, 7967 states have (on average 3.526547006401406) internal successors, (28096), 8009 states have internal predecessors, (28096), 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) [2022-11-02 21:01:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8010 states to 8010 states and 28096 transitions. [2022-11-02 21:01:06,581 INFO L78 Accepts]: Start accepts. Automaton has 8010 states and 28096 transitions. Word has length 22 [2022-11-02 21:01:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:06,582 INFO L495 AbstractCegarLoop]: Abstraction has 8010 states and 28096 transitions. [2022-11-02 21:01:06,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-11-02 21:01:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 8010 states and 28096 transitions. [2022-11-02 21:01:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:06,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:06,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:06,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-02 21:01:06,590 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash 854764750, now seen corresponding path program 3 times [2022-11-02 21:01:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:06,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876341778] [2022-11-02 21:01:06,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:06,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:06,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:06,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876341778] [2022-11-02 21:01:06,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876341778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:06,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:06,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:01:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065144404] [2022-11-02 21:01:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:06,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:06,879 INFO L87 Difference]: Start difference. First operand 8010 states and 28096 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-02 21:01:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:08,008 INFO L93 Difference]: Finished difference Result 10106 states and 36135 transitions. [2022-11-02 21:01:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:01:08,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:08,034 INFO L225 Difference]: With dead ends: 10106 [2022-11-02 21:01:08,034 INFO L226 Difference]: Without dead ends: 10106 [2022-11-02 21:01:08,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:01:08,035 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 562 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:08,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 81 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 21:01:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10106 states. [2022-11-02 21:01:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10106 to 7790. [2022-11-02 21:01:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7747 states have (on average 3.4960629921259843) internal successors, (27084), 7789 states have internal predecessors, (27084), 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) [2022-11-02 21:01:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 27084 transitions. [2022-11-02 21:01:08,209 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 27084 transitions. Word has length 22 [2022-11-02 21:01:08,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:08,209 INFO L495 AbstractCegarLoop]: Abstraction has 7790 states and 27084 transitions. [2022-11-02 21:01:08,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 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) [2022-11-02 21:01:08,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 27084 transitions. [2022-11-02 21:01:08,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:08,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:08,215 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:08,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-02 21:01:08,216 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:08,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1731503534, now seen corresponding path program 4 times [2022-11-02 21:01:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:08,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73816280] [2022-11-02 21:01:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:08,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:08,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:08,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73816280] [2022-11-02 21:01:08,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73816280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:08,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:08,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:08,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795021606] [2022-11-02 21:01:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:08,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:08,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:08,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:08,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:08,418 INFO L87 Difference]: Start difference. First operand 7790 states and 27084 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-02 21:01:09,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:09,245 INFO L93 Difference]: Finished difference Result 11144 states and 38085 transitions. [2022-11-02 21:01:09,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:01:09,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:09,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:09,279 INFO L225 Difference]: With dead ends: 11144 [2022-11-02 21:01:09,279 INFO L226 Difference]: Without dead ends: 11144 [2022-11-02 21:01:09,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:01:09,280 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 253 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:09,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 96 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:01:09,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11144 states. [2022-11-02 21:01:09,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11144 to 7922. [2022-11-02 21:01:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7922 states, 7879 states have (on average 3.483944663028303) internal successors, (27450), 7921 states have internal predecessors, (27450), 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) [2022-11-02 21:01:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7922 states to 7922 states and 27450 transitions. [2022-11-02 21:01:09,473 INFO L78 Accepts]: Start accepts. Automaton has 7922 states and 27450 transitions. Word has length 22 [2022-11-02 21:01:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:09,474 INFO L495 AbstractCegarLoop]: Abstraction has 7922 states and 27450 transitions. [2022-11-02 21:01:09,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-02 21:01:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 7922 states and 27450 transitions. [2022-11-02 21:01:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:09,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:09,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:09,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-02 21:01:09,481 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:09,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1735556474, now seen corresponding path program 5 times [2022-11-02 21:01:09,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:09,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222050722] [2022-11-02 21:01:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:09,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:09,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222050722] [2022-11-02 21:01:09,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222050722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:09,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:09,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743983054] [2022-11-02 21:01:09,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:09,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:01:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:01:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:09,745 INFO L87 Difference]: Start difference. First operand 7922 states and 27450 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2022-11-02 21:01:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:10,514 INFO L93 Difference]: Finished difference Result 9590 states and 32831 transitions. [2022-11-02 21:01:10,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:01:10,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:10,538 INFO L225 Difference]: With dead ends: 9590 [2022-11-02 21:01:10,538 INFO L226 Difference]: Without dead ends: 9590 [2022-11-02 21:01:10,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:10,539 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 206 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:10,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 102 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:01:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9590 states. [2022-11-02 21:01:10,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9590 to 8282. [2022-11-02 21:01:10,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8282 states, 8239 states have (on average 3.4948416069911397) internal successors, (28794), 8281 states have internal predecessors, (28794), 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) [2022-11-02 21:01:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8282 states to 8282 states and 28794 transitions. [2022-11-02 21:01:10,715 INFO L78 Accepts]: Start accepts. Automaton has 8282 states and 28794 transitions. Word has length 22 [2022-11-02 21:01:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:10,715 INFO L495 AbstractCegarLoop]: Abstraction has 8282 states and 28794 transitions. [2022-11-02 21:01:10,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 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) [2022-11-02 21:01:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8282 states and 28794 transitions. [2022-11-02 21:01:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:10,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:10,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:10,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-02 21:01:10,722 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:10,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:10,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1758793454, now seen corresponding path program 6 times [2022-11-02 21:01:10,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:10,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269987545] [2022-11-02 21:01:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:10,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:10,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269987545] [2022-11-02 21:01:10,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269987545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:10,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:10,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:10,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788609294] [2022-11-02 21:01:10,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:10,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:10,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:10,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:10,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:10,931 INFO L87 Difference]: Start difference. First operand 8282 states and 28794 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-11-02 21:01:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:11,586 INFO L93 Difference]: Finished difference Result 9512 states and 34970 transitions. [2022-11-02 21:01:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:11,587 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:11,614 INFO L225 Difference]: With dead ends: 9512 [2022-11-02 21:01:11,614 INFO L226 Difference]: Without dead ends: 9512 [2022-11-02 21:01:11,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:11,615 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 202 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:11,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 66 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2022-11-02 21:01:11,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 7356. [2022-11-02 21:01:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7356 states, 7315 states have (on average 3.5460013670539987) internal successors, (25939), 7355 states have internal predecessors, (25939), 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) [2022-11-02 21:01:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7356 states to 7356 states and 25939 transitions. [2022-11-02 21:01:11,769 INFO L78 Accepts]: Start accepts. Automaton has 7356 states and 25939 transitions. Word has length 22 [2022-11-02 21:01:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:11,770 INFO L495 AbstractCegarLoop]: Abstraction has 7356 states and 25939 transitions. [2022-11-02 21:01:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-11-02 21:01:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 7356 states and 25939 transitions. [2022-11-02 21:01:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:11,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:11,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:11,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-02 21:01:11,776 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:11,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:11,776 INFO L85 PathProgramCache]: Analyzing trace with hash -942073147, now seen corresponding path program 1 times [2022-11-02 21:01:11,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:11,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928570153] [2022-11-02 21:01:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:11,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:11,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:11,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928570153] [2022-11-02 21:01:11,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928570153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:11,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:11,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935218688] [2022-11-02 21:01:11,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:11,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:11,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:11,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:11,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:11,972 INFO L87 Difference]: Start difference. First operand 7356 states and 25939 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-02 21:01:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:12,696 INFO L93 Difference]: Finished difference Result 8818 states and 32056 transitions. [2022-11-02 21:01:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:12,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:12,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:12,727 INFO L225 Difference]: With dead ends: 8818 [2022-11-02 21:01:12,727 INFO L226 Difference]: Without dead ends: 8818 [2022-11-02 21:01:12,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:01:12,730 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 246 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:12,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 60 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:12,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8818 states. [2022-11-02 21:01:12,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8818 to 7356. [2022-11-02 21:01:12,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7356 states, 7315 states have (on average 3.5460013670539987) internal successors, (25939), 7355 states have internal predecessors, (25939), 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) [2022-11-02 21:01:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7356 states to 7356 states and 25939 transitions. [2022-11-02 21:01:12,891 INFO L78 Accepts]: Start accepts. Automaton has 7356 states and 25939 transitions. Word has length 22 [2022-11-02 21:01:12,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:12,891 INFO L495 AbstractCegarLoop]: Abstraction has 7356 states and 25939 transitions. [2022-11-02 21:01:12,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-02 21:01:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 7356 states and 25939 transitions. [2022-11-02 21:01:12,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:12,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:12,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:12,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-02 21:01:12,897 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:12,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash -61930563, now seen corresponding path program 2 times [2022-11-02 21:01:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:12,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504754314] [2022-11-02 21:01:12,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:12,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:13,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:13,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504754314] [2022-11-02 21:01:13,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504754314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:13,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:13,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:13,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928924434] [2022-11-02 21:01:13,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:13,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:13,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:13,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:13,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:13,081 INFO L87 Difference]: Start difference. First operand 7356 states and 25939 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-11-02 21:01:13,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:13,816 INFO L93 Difference]: Finished difference Result 12718 states and 44783 transitions. [2022-11-02 21:01:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:01:13,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:13,851 INFO L225 Difference]: With dead ends: 12718 [2022-11-02 21:01:13,851 INFO L226 Difference]: Without dead ends: 12718 [2022-11-02 21:01:13,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:01:13,852 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 212 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:13,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 123 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 21:01:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12718 states. [2022-11-02 21:01:14,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12718 to 8146. [2022-11-02 21:01:14,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8146 states, 8105 states have (on average 3.5962985811227637) internal successors, (29148), 8145 states have internal predecessors, (29148), 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) [2022-11-02 21:01:14,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8146 states to 8146 states and 29148 transitions. [2022-11-02 21:01:14,031 INFO L78 Accepts]: Start accepts. Automaton has 8146 states and 29148 transitions. Word has length 22 [2022-11-02 21:01:14,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:14,031 INFO L495 AbstractCegarLoop]: Abstraction has 8146 states and 29148 transitions. [2022-11-02 21:01:14,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-11-02 21:01:14,031 INFO L276 IsEmpty]: Start isEmpty. Operand 8146 states and 29148 transitions. [2022-11-02 21:01:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:14,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:14,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:14,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-02 21:01:14,041 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting qrcu_updaterErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:14,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:14,042 INFO L85 PathProgramCache]: Analyzing trace with hash -907997534, now seen corresponding path program 1 times [2022-11-02 21:01:14,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:14,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590278384] [2022-11-02 21:01:14,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:14,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:14,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:14,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590278384] [2022-11-02 21:01:14,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590278384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:14,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:14,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:01:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472890625] [2022-11-02 21:01:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:14,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:01:14,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:14,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:01:14,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:14,122 INFO L87 Difference]: Start difference. First operand 8146 states and 29148 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-11-02 21:01:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:14,390 INFO L93 Difference]: Finished difference Result 9354 states and 32525 transitions. [2022-11-02 21:01:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:14,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:14,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:14,412 INFO L225 Difference]: With dead ends: 9354 [2022-11-02 21:01:14,412 INFO L226 Difference]: Without dead ends: 8958 [2022-11-02 21:01:14,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:01:14,413 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 140 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:14,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 73 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8958 states. [2022-11-02 21:01:14,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8958 to 8480. [2022-11-02 21:01:14,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8480 states, 8449 states have (on average 3.547165345011244) internal successors, (29970), 8479 states have internal predecessors, (29970), 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) [2022-11-02 21:01:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8480 states to 8480 states and 29970 transitions. [2022-11-02 21:01:14,568 INFO L78 Accepts]: Start accepts. Automaton has 8480 states and 29970 transitions. Word has length 22 [2022-11-02 21:01:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:14,568 INFO L495 AbstractCegarLoop]: Abstraction has 8480 states and 29970 transitions. [2022-11-02 21:01:14,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-11-02 21:01:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 8480 states and 29970 transitions. [2022-11-02 21:01:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:14,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:14,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:14,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-02 21:01:14,577 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1830814987, now seen corresponding path program 3 times [2022-11-02 21:01:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:14,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991722037] [2022-11-02 21:01:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:14,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:14,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:14,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991722037] [2022-11-02 21:01:14,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991722037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:14,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:14,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:14,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271480658] [2022-11-02 21:01:14,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:14,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:14,756 INFO L87 Difference]: Start difference. First operand 8480 states and 29970 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-11-02 21:01:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:15,414 INFO L93 Difference]: Finished difference Result 10974 states and 39559 transitions. [2022-11-02 21:01:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:15,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:15,442 INFO L225 Difference]: With dead ends: 10974 [2022-11-02 21:01:15,442 INFO L226 Difference]: Without dead ends: 10950 [2022-11-02 21:01:15,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:01:15,443 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 198 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:15,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 110 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2022-11-02 21:01:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 7772. [2022-11-02 21:01:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7772 states, 7741 states have (on average 3.5671101924815916) internal successors, (27613), 7771 states have internal predecessors, (27613), 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) [2022-11-02 21:01:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7772 states to 7772 states and 27613 transitions. [2022-11-02 21:01:15,606 INFO L78 Accepts]: Start accepts. Automaton has 7772 states and 27613 transitions. Word has length 22 [2022-11-02 21:01:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:15,606 INFO L495 AbstractCegarLoop]: Abstraction has 7772 states and 27613 transitions. [2022-11-02 21:01:15,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2022-11-02 21:01:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7772 states and 27613 transitions. [2022-11-02 21:01:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-02 21:01:15,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:15,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:15,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-02 21:01:15,616 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -909326747, now seen corresponding path program 4 times [2022-11-02 21:01:15,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:15,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682168691] [2022-11-02 21:01:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:15,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:15,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682168691] [2022-11-02 21:01:15,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682168691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:15,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:15,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:15,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021636742] [2022-11-02 21:01:15,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:15,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:15,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:15,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:15,778 INFO L87 Difference]: Start difference. First operand 7772 states and 27613 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-02 21:01:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:16,429 INFO L93 Difference]: Finished difference Result 10288 states and 36483 transitions. [2022-11-02 21:01:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2022-11-02 21:01:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:16,453 INFO L225 Difference]: With dead ends: 10288 [2022-11-02 21:01:16,454 INFO L226 Difference]: Without dead ends: 10264 [2022-11-02 21:01:16,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:16,454 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 158 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:16,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 93 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:01:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10264 states. [2022-11-02 21:01:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10264 to 7496. [2022-11-02 21:01:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7467 states have (on average 3.531404847997857) internal successors, (26369), 7495 states have internal predecessors, (26369), 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) [2022-11-02 21:01:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 26369 transitions. [2022-11-02 21:01:16,619 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 26369 transitions. Word has length 22 [2022-11-02 21:01:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:16,620 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 26369 transitions. [2022-11-02 21:01:16,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-11-02 21:01:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 26369 transitions. [2022-11-02 21:01:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:01:16,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:16,627 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:16,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-02 21:01:16,627 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:16,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:16,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1914416326, now seen corresponding path program 1 times [2022-11-02 21:01:16,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:16,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076920253] [2022-11-02 21:01:16,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:16,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:16,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:16,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076920253] [2022-11-02 21:01:16,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076920253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:16,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:16,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:16,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099784114] [2022-11-02 21:01:16,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:16,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:16,692 INFO L87 Difference]: Start difference. First operand 7496 states and 26369 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-11-02 21:01:17,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:17,072 INFO L93 Difference]: Finished difference Result 8248 states and 28304 transitions. [2022-11-02 21:01:17,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:17,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2022-11-02 21:01:17,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:17,099 INFO L225 Difference]: With dead ends: 8248 [2022-11-02 21:01:17,100 INFO L226 Difference]: Without dead ends: 8032 [2022-11-02 21:01:17,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:17,100 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 213 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:17,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 91 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8032 states. [2022-11-02 21:01:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8032 to 7558. [2022-11-02 21:01:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7558 states, 7537 states have (on average 3.5138649329972136) internal successors, (26484), 7557 states have internal predecessors, (26484), 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) [2022-11-02 21:01:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7558 states to 7558 states and 26484 transitions. [2022-11-02 21:01:17,301 INFO L78 Accepts]: Start accepts. Automaton has 7558 states and 26484 transitions. Word has length 23 [2022-11-02 21:01:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:17,302 INFO L495 AbstractCegarLoop]: Abstraction has 7558 states and 26484 transitions. [2022-11-02 21:01:17,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-11-02 21:01:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 7558 states and 26484 transitions. [2022-11-02 21:01:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:01:17,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:17,310 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:17,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-02 21:01:17,311 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:17,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:17,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1914416327, now seen corresponding path program 1 times [2022-11-02 21:01:17,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:17,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549003559] [2022-11-02 21:01:17,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:17,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:17,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:17,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:17,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549003559] [2022-11-02 21:01:17,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549003559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:17,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:17,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:17,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555272295] [2022-11-02 21:01:17,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:17,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:17,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:17,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:17,378 INFO L87 Difference]: Start difference. First operand 7558 states and 26484 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-11-02 21:01:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:17,760 INFO L93 Difference]: Finished difference Result 7934 states and 26485 transitions. [2022-11-02 21:01:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:17,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2022-11-02 21:01:17,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:17,782 INFO L225 Difference]: With dead ends: 7934 [2022-11-02 21:01:17,782 INFO L226 Difference]: Without dead ends: 7230 [2022-11-02 21:01:17,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:17,783 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 238 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:17,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 101 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2022-11-02 21:01:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 6432. [2022-11-02 21:01:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6432 states, 6418 states have (on average 3.41025241508258) internal successors, (21887), 6431 states have internal predecessors, (21887), 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) [2022-11-02 21:01:17,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 21887 transitions. [2022-11-02 21:01:17,981 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 21887 transitions. Word has length 23 [2022-11-02 21:01:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:17,981 INFO L495 AbstractCegarLoop]: Abstraction has 6432 states and 21887 transitions. [2022-11-02 21:01:17,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2022-11-02 21:01:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 21887 transitions. [2022-11-02 21:01:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 21:01:17,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:17,986 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:17,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-02 21:01:17,987 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting qrcu_reader2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:17,988 INFO L85 PathProgramCache]: Analyzing trace with hash 902405649, now seen corresponding path program 1 times [2022-11-02 21:01:17,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:17,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482275205] [2022-11-02 21:01:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:17,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:18,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:18,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482275205] [2022-11-02 21:01:18,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482275205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:18,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:18,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667234318] [2022-11-02 21:01:18,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:18,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:18,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:18,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:18,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:18,103 INFO L87 Difference]: Start difference. First operand 6432 states and 21887 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2022-11-02 21:01:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:18,494 INFO L93 Difference]: Finished difference Result 6998 states and 23875 transitions. [2022-11-02 21:01:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:18,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 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 [2022-11-02 21:01:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:18,515 INFO L225 Difference]: With dead ends: 6998 [2022-11-02 21:01:18,515 INFO L226 Difference]: Without dead ends: 6998 [2022-11-02 21:01:18,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:18,516 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 239 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:18,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 100 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6998 states. [2022-11-02 21:01:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6998 to 6084. [2022-11-02 21:01:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6072 states have (on average 3.4161725955204214) internal successors, (20743), 6083 states have internal predecessors, (20743), 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) [2022-11-02 21:01:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 20743 transitions. [2022-11-02 21:01:18,656 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 20743 transitions. Word has length 24 [2022-11-02 21:01:18,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:18,657 INFO L495 AbstractCegarLoop]: Abstraction has 6084 states and 20743 transitions. [2022-11-02 21:01:18,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2022-11-02 21:01:18,657 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 20743 transitions. [2022-11-02 21:01:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 21:01:18,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:18,664 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:18,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-02 21:01:18,665 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1494227694, now seen corresponding path program 1 times [2022-11-02 21:01:18,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:18,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745749049] [2022-11-02 21:01:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:18,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:18,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:18,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745749049] [2022-11-02 21:01:18,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745749049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:18,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:18,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:01:18,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760465792] [2022-11-02 21:01:18,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:18,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:01:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:01:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:18,702 INFO L87 Difference]: Start difference. First operand 6084 states and 20743 transitions. Second operand has 3 states, 2 states have (on average 12.0) 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) [2022-11-02 21:01:18,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:18,788 INFO L93 Difference]: Finished difference Result 5958 states and 20323 transitions. [2022-11-02 21:01:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:01:18,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) 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 [2022-11-02 21:01:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:18,800 INFO L225 Difference]: With dead ends: 5958 [2022-11-02 21:01:18,800 INFO L226 Difference]: Without dead ends: 5958 [2022-11-02 21:01:18,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:01:18,801 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:18,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 14 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:01:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5958 states. [2022-11-02 21:01:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5958 to 5652. [2022-11-02 21:01:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5642 states have (on average 3.4000354484225452) internal successors, (19183), 5651 states have internal predecessors, (19183), 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) [2022-11-02 21:01:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 19183 transitions. [2022-11-02 21:01:18,883 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 19183 transitions. Word has length 24 [2022-11-02 21:01:18,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:18,884 INFO L495 AbstractCegarLoop]: Abstraction has 5652 states and 19183 transitions. [2022-11-02 21:01:18,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) 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) [2022-11-02 21:01:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 19183 transitions. [2022-11-02 21:01:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 21:01:18,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:18,889 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:18,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-02 21:01:18,889 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1494227693, now seen corresponding path program 1 times [2022-11-02 21:01:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:18,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997655486] [2022-11-02 21:01:18,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:18,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:18,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:18,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997655486] [2022-11-02 21:01:18,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997655486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:18,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:18,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713354198] [2022-11-02 21:01:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:18,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:18,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:18,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:18,962 INFO L87 Difference]: Start difference. First operand 5652 states and 19183 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2022-11-02 21:01:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:19,304 INFO L93 Difference]: Finished difference Result 6612 states and 21575 transitions. [2022-11-02 21:01:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:19,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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 [2022-11-02 21:01:19,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:19,322 INFO L225 Difference]: With dead ends: 6612 [2022-11-02 21:01:19,322 INFO L226 Difference]: Without dead ends: 6360 [2022-11-02 21:01:19,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:19,323 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 130 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:19,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 119 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:19,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2022-11-02 21:01:19,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 5634. [2022-11-02 21:01:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5634 states, 5627 states have (on average 3.3349920028434337) internal successors, (18766), 5633 states have internal predecessors, (18766), 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) [2022-11-02 21:01:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5634 states to 5634 states and 18766 transitions. [2022-11-02 21:01:19,448 INFO L78 Accepts]: Start accepts. Automaton has 5634 states and 18766 transitions. Word has length 24 [2022-11-02 21:01:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:19,449 INFO L495 AbstractCegarLoop]: Abstraction has 5634 states and 18766 transitions. [2022-11-02 21:01:19,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2022-11-02 21:01:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 5634 states and 18766 transitions. [2022-11-02 21:01:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:01:19,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:19,457 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:19,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-02 21:01:19,458 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:19,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash -744287068, now seen corresponding path program 1 times [2022-11-02 21:01:19,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:19,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083601963] [2022-11-02 21:01:19,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:19,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:19,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:19,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083601963] [2022-11-02 21:01:19,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083601963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:19,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:19,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:19,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529449292] [2022-11-02 21:01:19,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:19,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:19,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:19,541 INFO L87 Difference]: Start difference. First operand 5634 states and 18766 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2022-11-02 21:01:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:19,767 INFO L93 Difference]: Finished difference Result 5676 states and 18626 transitions. [2022-11-02 21:01:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:19,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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 [2022-11-02 21:01:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:19,778 INFO L225 Difference]: With dead ends: 5676 [2022-11-02 21:01:19,778 INFO L226 Difference]: Without dead ends: 5052 [2022-11-02 21:01:19,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:19,778 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 194 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:19,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 68 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:19,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5052 states. [2022-11-02 21:01:19,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5052 to 4374. [2022-11-02 21:01:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4374 states, 4369 states have (on average 3.3842984664682993) internal successors, (14786), 4373 states have internal predecessors, (14786), 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) [2022-11-02 21:01:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4374 states to 4374 states and 14786 transitions. [2022-11-02 21:01:19,850 INFO L78 Accepts]: Start accepts. Automaton has 4374 states and 14786 transitions. Word has length 26 [2022-11-02 21:01:19,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:19,850 INFO L495 AbstractCegarLoop]: Abstraction has 4374 states and 14786 transitions. [2022-11-02 21:01:19,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2022-11-02 21:01:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4374 states and 14786 transitions. [2022-11-02 21:01:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:01:19,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:19,856 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:19,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-02 21:01:19,856 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:19,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1830066255, now seen corresponding path program 1 times [2022-11-02 21:01:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:19,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265204396] [2022-11-02 21:01:19,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:19,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:19,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:19,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265204396] [2022-11-02 21:01:19,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265204396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:19,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:19,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:19,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689715159] [2022-11-02 21:01:19,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:19,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:19,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:19,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:19,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:19,948 INFO L87 Difference]: Start difference. First operand 4374 states and 14786 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-02 21:01:20,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:20,274 INFO L93 Difference]: Finished difference Result 5214 states and 16944 transitions. [2022-11-02 21:01:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:01:20,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-11-02 21:01:20,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:20,288 INFO L225 Difference]: With dead ends: 5214 [2022-11-02 21:01:20,288 INFO L226 Difference]: Without dead ends: 4836 [2022-11-02 21:01:20,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:20,288 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 189 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:20,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 83 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2022-11-02 21:01:20,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 3990. [2022-11-02 21:01:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3990 states, 3985 states have (on average 3.3590966122961103) internal successors, (13386), 3989 states have internal predecessors, (13386), 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) [2022-11-02 21:01:20,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 13386 transitions. [2022-11-02 21:01:20,383 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 13386 transitions. Word has length 27 [2022-11-02 21:01:20,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:20,383 INFO L495 AbstractCegarLoop]: Abstraction has 3990 states and 13386 transitions. [2022-11-02 21:01:20,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2022-11-02 21:01:20,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 13386 transitions. [2022-11-02 21:01:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:01:20,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:20,391 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:20,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-02 21:01:20,391 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:20,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:20,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1384029935, now seen corresponding path program 2 times [2022-11-02 21:01:20,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:20,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383444141] [2022-11-02 21:01:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:20,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:20,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:20,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383444141] [2022-11-02 21:01:20,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383444141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:20,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:20,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:20,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046370209] [2022-11-02 21:01:20,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:20,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:20,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:20,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:20,536 INFO L87 Difference]: Start difference. First operand 3990 states and 13386 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-02 21:01:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:20,968 INFO L93 Difference]: Finished difference Result 4632 states and 15492 transitions. [2022-11-02 21:01:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:20,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-02 21:01:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:20,985 INFO L225 Difference]: With dead ends: 4632 [2022-11-02 21:01:20,985 INFO L226 Difference]: Without dead ends: 4532 [2022-11-02 21:01:20,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:20,986 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 233 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:20,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 131 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:20,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2022-11-02 21:01:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 3698. [2022-11-02 21:01:21,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3698 states, 3694 states have (on average 3.383595018949648) internal successors, (12499), 3697 states have internal predecessors, (12499), 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) [2022-11-02 21:01:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3698 states to 3698 states and 12499 transitions. [2022-11-02 21:01:21,064 INFO L78 Accepts]: Start accepts. Automaton has 3698 states and 12499 transitions. Word has length 27 [2022-11-02 21:01:21,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:21,064 INFO L495 AbstractCegarLoop]: Abstraction has 3698 states and 12499 transitions. [2022-11-02 21:01:21,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-02 21:01:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3698 states and 12499 transitions. [2022-11-02 21:01:21,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:01:21,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:21,070 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:21,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-02 21:01:21,070 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting qrcu_reader1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:21,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1077978438, now seen corresponding path program 1 times [2022-11-02 21:01:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:21,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443914520] [2022-11-02 21:01:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:21,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:21,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443914520] [2022-11-02 21:01:21,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443914520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:21,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:21,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:21,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320447013] [2022-11-02 21:01:21,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:21,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:21,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:21,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:21,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:21,205 INFO L87 Difference]: Start difference. First operand 3698 states and 12499 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-02 21:01:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:21,672 INFO L93 Difference]: Finished difference Result 4470 states and 15021 transitions. [2022-11-02 21:01:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:01:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-11-02 21:01:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:21,684 INFO L225 Difference]: With dead ends: 4470 [2022-11-02 21:01:21,685 INFO L226 Difference]: Without dead ends: 4420 [2022-11-02 21:01:21,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:21,685 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 198 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:21,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 137 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:01:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2022-11-02 21:01:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3552. [2022-11-02 21:01:21,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3549 states have (on average 3.407156945618484) internal successors, (12092), 3551 states have internal predecessors, (12092), 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) [2022-11-02 21:01:21,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 12092 transitions. [2022-11-02 21:01:21,766 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 12092 transitions. Word has length 27 [2022-11-02 21:01:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:21,766 INFO L495 AbstractCegarLoop]: Abstraction has 3552 states and 12092 transitions. [2022-11-02 21:01:21,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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) [2022-11-02 21:01:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 12092 transitions. [2022-11-02 21:01:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 21:01:21,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:21,771 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:21,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-02 21:01:21,772 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting qrcu_updaterErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:21,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:21,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1259496444, now seen corresponding path program 1 times [2022-11-02 21:01:21,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:21,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129183842] [2022-11-02 21:01:21,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:21,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:21,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129183842] [2022-11-02 21:01:21,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129183842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:21,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:21,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734998630] [2022-11-02 21:01:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:21,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:21,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:21,938 INFO L87 Difference]: Start difference. First operand 3552 states and 12092 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2022-11-02 21:01:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:22,241 INFO L93 Difference]: Finished difference Result 5558 states and 18643 transitions. [2022-11-02 21:01:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 [2022-11-02 21:01:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:22,256 INFO L225 Difference]: With dead ends: 5558 [2022-11-02 21:01:22,256 INFO L226 Difference]: Without dead ends: 5424 [2022-11-02 21:01:22,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:22,257 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 238 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:22,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 90 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5424 states. [2022-11-02 21:01:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5424 to 4710. [2022-11-02 21:01:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 4707 states have (on average 3.345018058211175) internal successors, (15745), 4709 states have internal predecessors, (15745), 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) [2022-11-02 21:01:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 15745 transitions. [2022-11-02 21:01:22,360 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 15745 transitions. Word has length 28 [2022-11-02 21:01:22,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:22,361 INFO L495 AbstractCegarLoop]: Abstraction has 4710 states and 15745 transitions. [2022-11-02 21:01:22,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2022-11-02 21:01:22,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 15745 transitions. [2022-11-02 21:01:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 21:01:22,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:22,369 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:22,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-02 21:01:22,370 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting qrcu_updaterErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:22,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:22,370 INFO L85 PathProgramCache]: Analyzing trace with hash 936714049, now seen corresponding path program 1 times [2022-11-02 21:01:22,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:22,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191467742] [2022-11-02 21:01:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:22,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:22,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:22,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191467742] [2022-11-02 21:01:22,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191467742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:22,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:22,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:22,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442141709] [2022-11-02 21:01:22,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:22,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:01:22,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:01:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:01:22,467 INFO L87 Difference]: Start difference. First operand 4710 states and 15745 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2022-11-02 21:01:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:22,742 INFO L93 Difference]: Finished difference Result 6150 states and 20140 transitions. [2022-11-02 21:01:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:22,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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 [2022-11-02 21:01:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:22,753 INFO L225 Difference]: With dead ends: 6150 [2022-11-02 21:01:22,753 INFO L226 Difference]: Without dead ends: 5646 [2022-11-02 21:01:22,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:22,753 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 99 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:22,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 60 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5646 states. [2022-11-02 21:01:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5646 to 4584. [2022-11-02 21:01:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4584 states, 4581 states have (on average 3.311285745470421) internal successors, (15169), 4583 states have internal predecessors, (15169), 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) [2022-11-02 21:01:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4584 states to 4584 states and 15169 transitions. [2022-11-02 21:01:22,824 INFO L78 Accepts]: Start accepts. Automaton has 4584 states and 15169 transitions. Word has length 28 [2022-11-02 21:01:22,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:22,824 INFO L495 AbstractCegarLoop]: Abstraction has 4584 states and 15169 transitions. [2022-11-02 21:01:22,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 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) [2022-11-02 21:01:22,824 INFO L276 IsEmpty]: Start isEmpty. Operand 4584 states and 15169 transitions. [2022-11-02 21:01:22,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 21:01:22,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:22,830 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:22,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-02 21:01:22,831 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting qrcu_updaterErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:22,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:22,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2109875829, now seen corresponding path program 2 times [2022-11-02 21:01:22,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:22,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437379836] [2022-11-02 21:01:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:22,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:22,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437379836] [2022-11-02 21:01:22,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437379836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:22,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:22,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:01:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675771439] [2022-11-02 21:01:22,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:22,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:01:22,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:22,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:01:22,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:22,989 INFO L87 Difference]: Start difference. First operand 4584 states and 15169 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2022-11-02 21:01:23,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:23,358 INFO L93 Difference]: Finished difference Result 6144 states and 20363 transitions. [2022-11-02 21:01:23,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:23,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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 [2022-11-02 21:01:23,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:23,369 INFO L225 Difference]: With dead ends: 6144 [2022-11-02 21:01:23,370 INFO L226 Difference]: Without dead ends: 5992 [2022-11-02 21:01:23,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:23,370 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 244 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:23,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 155 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:23,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5992 states. [2022-11-02 21:01:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5992 to 3334. [2022-11-02 21:01:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 3331 states have (on average 3.3824677274091863) internal successors, (11267), 3333 states have internal predecessors, (11267), 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) [2022-11-02 21:01:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 11267 transitions. [2022-11-02 21:01:23,437 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 11267 transitions. Word has length 28 [2022-11-02 21:01:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:23,437 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 11267 transitions. [2022-11-02 21:01:23,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2022-11-02 21:01:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 11267 transitions. [2022-11-02 21:01:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 21:01:23,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:23,442 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:23,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-02 21:01:23,442 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting qrcu_updaterErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1980526712, now seen corresponding path program 1 times [2022-11-02 21:01:23,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:23,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192296396] [2022-11-02 21:01:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:23,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:23,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192296396] [2022-11-02 21:01:23,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192296396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:23,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:23,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:23,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284605519] [2022-11-02 21:01:23,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:23,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:23,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:23,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:23,578 INFO L87 Difference]: Start difference. First operand 3334 states and 11267 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2022-11-02 21:01:23,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:23,870 INFO L93 Difference]: Finished difference Result 5144 states and 17185 transitions. [2022-11-02 21:01:23,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:23,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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 [2022-11-02 21:01:23,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:23,879 INFO L225 Difference]: With dead ends: 5144 [2022-11-02 21:01:23,880 INFO L226 Difference]: Without dead ends: 5012 [2022-11-02 21:01:23,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:23,880 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 185 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:23,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 102 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:01:23,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2022-11-02 21:01:23,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 3286. [2022-11-02 21:01:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 3284 states have (on average 3.3757612667478685) internal successors, (11086), 3285 states have internal predecessors, (11086), 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) [2022-11-02 21:01:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 11086 transitions. [2022-11-02 21:01:23,943 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 11086 transitions. Word has length 28 [2022-11-02 21:01:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:23,943 INFO L495 AbstractCegarLoop]: Abstraction has 3286 states and 11086 transitions. [2022-11-02 21:01:23,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 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) [2022-11-02 21:01:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 11086 transitions. [2022-11-02 21:01:23,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 21:01:23,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:23,948 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:23,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-02 21:01:23,949 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:23,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash -258478011, now seen corresponding path program 1 times [2022-11-02 21:01:23,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:23,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64656235] [2022-11-02 21:01:23,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:23,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:24,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:24,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64656235] [2022-11-02 21:01:24,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64656235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:24,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:24,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:24,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874762854] [2022-11-02 21:01:24,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:24,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:24,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:24,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:24,047 INFO L87 Difference]: Start difference. First operand 3286 states and 11086 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-11-02 21:01:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:24,297 INFO L93 Difference]: Finished difference Result 3502 states and 11674 transitions. [2022-11-02 21:01:24,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:01:24,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2022-11-02 21:01:24,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:24,305 INFO L225 Difference]: With dead ends: 3502 [2022-11-02 21:01:24,305 INFO L226 Difference]: Without dead ends: 3040 [2022-11-02 21:01:24,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:01:24,306 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 286 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:24,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 86 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2022-11-02 21:01:24,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 3004. [2022-11-02 21:01:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 3002 states have (on average 3.32744836775483) internal successors, (9989), 3003 states have internal predecessors, (9989), 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) [2022-11-02 21:01:24,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 9989 transitions. [2022-11-02 21:01:24,355 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 9989 transitions. Word has length 29 [2022-11-02 21:01:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:24,355 INFO L495 AbstractCegarLoop]: Abstraction has 3004 states and 9989 transitions. [2022-11-02 21:01:24,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-11-02 21:01:24,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 9989 transitions. [2022-11-02 21:01:24,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 21:01:24,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:24,359 INFO L195 NwaCegarLoop]: 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] [2022-11-02 21:01:24,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-02 21:01:24,359 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-11-02 21:01:24,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:24,360 INFO L85 PathProgramCache]: Analyzing trace with hash -389808891, now seen corresponding path program 2 times [2022-11-02 21:01:24,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:24,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800761022] [2022-11-02 21:01:24,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:24,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:01:24,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:24,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800761022] [2022-11-02 21:01:24,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800761022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:24,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:24,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:01:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228520020] [2022-11-02 21:01:24,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:24,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:24,455 INFO L87 Difference]: Start difference. First operand 3004 states and 9989 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-11-02 21:01:24,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:24,676 INFO L93 Difference]: Finished difference Result 2998 states and 9949 transitions. [2022-11-02 21:01:24,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:01:24,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2022-11-02 21:01:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:24,677 INFO L225 Difference]: With dead ends: 2998 [2022-11-02 21:01:24,677 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 21:01:24,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:01:24,678 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 259 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:24,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 89 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:01:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 21:01:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 21:01:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-02 21:01:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 21:01:24,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2022-11-02 21:01:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:24,679 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:01:24,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2022-11-02 21:01:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:01:24,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 21:01:24,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 67 remaining) [2022-11-02 21:01:24,687 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 67 remaining) [2022-11-02 21:01:24,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 67 remaining) [2022-11-02 21:01:24,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 67 remaining) [2022-11-02 21:01:24,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 67 remaining) [2022-11-02 21:01:24,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 67 remaining) [2022-11-02 21:01:24,688 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 67 remaining) [2022-11-02 21:01:24,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 67 remaining) [2022-11-02 21:01:24,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 67 remaining) [2022-11-02 21:01:24,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 67 remaining) [2022-11-02 21:01:24,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 67 remaining) [2022-11-02 21:01:24,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 67 remaining) [2022-11-02 21:01:24,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 67 remaining) [2022-11-02 21:01:24,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 67 remaining) [2022-11-02 21:01:24,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 67 remaining) [2022-11-02 21:01:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 67 remaining) [2022-11-02 21:01:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 67 remaining) [2022-11-02 21:01:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 67 remaining) [2022-11-02 21:01:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 67 remaining) [2022-11-02 21:01:24,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 67 remaining) [2022-11-02 21:01:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 67 remaining) [2022-11-02 21:01:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 67 remaining) [2022-11-02 21:01:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 67 remaining) [2022-11-02 21:01:24,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 67 remaining) [2022-11-02 21:01:24,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 67 remaining) [2022-11-02 21:01:24,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 67 remaining) [2022-11-02 21:01:24,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 67 remaining) [2022-11-02 21:01:24,693 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 67 remaining) [2022-11-02 21:01:24,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 67 remaining) [2022-11-02 21:01:24,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 67 remaining) [2022-11-02 21:01:24,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 67 remaining) [2022-11-02 21:01:24,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 67 remaining) [2022-11-02 21:01:24,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 67 remaining) [2022-11-02 21:01:24,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 67 remaining) [2022-11-02 21:01:24,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 67 remaining) [2022-11-02 21:01:24,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 67 remaining) [2022-11-02 21:01:24,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 67 remaining) [2022-11-02 21:01:24,695 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 67 remaining) [2022-11-02 21:01:24,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 67 remaining) [2022-11-02 21:01:24,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 67 remaining) [2022-11-02 21:01:24,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 67 remaining) [2022-11-02 21:01:24,696 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 67 remaining) [2022-11-02 21:01:24,697 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 67 remaining) [2022-11-02 21:01:24,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 67 remaining) [2022-11-02 21:01:24,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 67 remaining) [2022-11-02 21:01:24,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 67 remaining) [2022-11-02 21:01:24,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 67 remaining) [2022-11-02 21:01:24,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 67 remaining) [2022-11-02 21:01:24,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 67 remaining) [2022-11-02 21:01:24,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 67 remaining) [2022-11-02 21:01:24,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_reader2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 67 remaining) [2022-11-02 21:01:24,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 67 remaining) [2022-11-02 21:01:24,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 67 remaining) [2022-11-02 21:01:24,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 67 remaining) [2022-11-02 21:01:24,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 67 remaining) [2022-11-02 21:01:24,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 67 remaining) [2022-11-02 21:01:24,700 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 67 remaining) [2022-11-02 21:01:24,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 67 remaining) [2022-11-02 21:01:24,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 67 remaining) [2022-11-02 21:01:24,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 67 remaining) [2022-11-02 21:01:24,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 67 remaining) [2022-11-02 21:01:24,701 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 67 remaining) [2022-11-02 21:01:24,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 67 remaining) [2022-11-02 21:01:24,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 67 remaining) [2022-11-02 21:01:24,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 67 remaining) [2022-11-02 21:01:24,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 67 remaining) [2022-11-02 21:01:24,702 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 67 remaining) [2022-11-02 21:01:24,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-02 21:01:24,705 INFO L444 BasicCegarLoop]: Path program histogram: [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:24,710 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 21:01:24,710 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:01:24,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:01:24 BasicIcfg [2022-11-02 21:01:24,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:01:24,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:01:24,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:01:24,714 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:01:24,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:02" (3/4) ... [2022-11-02 21:01:24,717 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:01:24,721 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader1 [2022-11-02 21:01:24,722 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader2 [2022-11-02 21:01:24,722 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_updater [2022-11-02 21:01:24,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-02 21:01:24,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 21:01:24,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 21:01:24,725 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:01:24,756 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:01:24,756 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:01:24,757 INFO L158 Benchmark]: Toolchain (without parser) took 83549.05ms. Allocated memory was 130.0MB in the beginning and 8.7GB in the end (delta: 8.5GB). Free memory was 92.1MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2022-11-02 21:01:24,757 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 61.0MB in the beginning and 61.0MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:01:24,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 557.68ms. Allocated memory is still 130.0MB. Free memory was 92.1MB in the beginning and 93.3MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:01:24,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.05ms. Allocated memory is still 130.0MB. Free memory was 93.3MB in the beginning and 90.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:01:24,758 INFO L158 Benchmark]: Boogie Preprocessor took 54.32ms. Allocated memory is still 130.0MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:01:24,758 INFO L158 Benchmark]: RCFGBuilder took 1011.01ms. Allocated memory is still 130.0MB. Free memory was 88.3MB in the beginning and 94.7MB in the end (delta: -6.4MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2022-11-02 21:01:24,758 INFO L158 Benchmark]: TraceAbstraction took 81782.21ms. Allocated memory was 130.0MB in the beginning and 8.7GB in the end (delta: 8.5GB). Free memory was 93.9MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. [2022-11-02 21:01:24,758 INFO L158 Benchmark]: Witness Printer took 43.25ms. Allocated memory is still 8.7GB. Free memory was 6.1GB in the beginning and 6.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:01:24,766 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory was 61.0MB in the beginning and 61.0MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 557.68ms. Allocated memory is still 130.0MB. Free memory was 92.1MB in the beginning and 93.3MB in the end (delta: -1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.05ms. Allocated memory is still 130.0MB. Free memory was 93.3MB in the beginning and 90.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.32ms. Allocated memory is still 130.0MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1011.01ms. Allocated memory is still 130.0MB. Free memory was 88.3MB in the beginning and 94.7MB in the end (delta: -6.4MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. * TraceAbstraction took 81782.21ms. Allocated memory was 130.0MB in the beginning and 8.7GB in the end (delta: 8.5GB). Free memory was 93.9MB in the beginning and 6.1GB in the end (delta: -6.0GB). Peak memory consumption was 2.6GB. Max. memory is 16.1GB. * Witness Printer took 43.25ms. Allocated memory is still 8.7GB. Free memory was 6.1GB in the beginning and 6.1GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.3s, 221 PlacesBefore, 100 PlacesAfterwards, 229 TransitionsBefore, 104 TransitionsAfterwards, 17654 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 128 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 4 ChoiceCompositions, 189 TotalNumberOfCompositions, 49073 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24566, positive: 23974, positive conditional: 0, positive unconditional: 23974, negative: 592, negative conditional: 0, negative unconditional: 592, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11231, positive: 11041, positive conditional: 0, positive unconditional: 11041, negative: 190, negative conditional: 0, negative unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11231, positive: 10971, positive conditional: 0, positive unconditional: 10971, negative: 260, negative conditional: 0, negative unconditional: 260, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 260, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 190, negative conditional: 0, negative unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 741, positive: 199, positive conditional: 0, positive unconditional: 199, negative: 541, negative conditional: 0, negative unconditional: 541, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 24566, positive: 12933, positive conditional: 0, positive unconditional: 12933, negative: 402, negative conditional: 0, negative unconditional: 402, unknown: 11231, unknown conditional: 0, unknown unconditional: 11231] , Statistics on independence cache: Total cache size (in pairs): 1912, Positive cache size: 1836, Positive conditional cache size: 0, Positive unconditional cache size: 1836, Negative cache size: 76, Negative conditional cache size: 0, Negative unconditional cache size: 76 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 703]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 703]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 695]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 695]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 702]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 703]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 703]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 695]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 695]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 771]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 772]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 771]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 772]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 771]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 772]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 771]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 772]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 361 locations, 67 error locations. Started 1 CEGAR loops. OverallTime: 81.6s, OverallIterations: 70, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.5s, AutomataDifference: 39.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12698 SdHoareTripleChecker+Valid, 27.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12698 mSDsluCounter, 5216 SdHoareTripleChecker+Invalid, 22.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12772 mSDsCounter, 2391 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34106 IncrementalHoareTripleChecker+Invalid, 36497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2391 mSolverCounterUnsat, 1722 mSDtfsCounter, 34106 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 534 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 524 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25092occurred in iteration=0, InterpolantAutomatonStates: 580, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.7s AutomataMinimizationTime, 70 MinimizatonAttempts, 80070 StatesRemovedByMinimization, 67 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 1308 NumberOfCodeBlocks, 1308 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 1238 ConstructedInterpolants, 0 QuantifiedInterpolants, 7615 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 70 InterpolantComputations, 70 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 32 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 21:01:24,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_112ac502-70ae-4354-8bdd-43308055cc54/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE