./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:05:37,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:05:37,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:05:37,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:05:37,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:05:37,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:05:37,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:05:37,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:05:37,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:05:37,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:05:37,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:05:37,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:05:37,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:05:37,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:05:37,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:05:37,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:05:37,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:05:37,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:05:37,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:05:37,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:05:37,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:05:37,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:05:37,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:05:37,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:05:37,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:05:37,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:05:37,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:05:37,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:05:37,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:05:37,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:05:37,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:05:37,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:05:37,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:05:37,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:05:37,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:05:37,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:05:37,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:05:37,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:05:37,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:05:37,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:05:37,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:05:37,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 22:05:37,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:05:37,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:05:37,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:05:37,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:05:37,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:05:37,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:05:37,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:05:37,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:05:37,914 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:05:37,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:05:37,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:05:37,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:05:37,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:05:37,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:05:37,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:05:37,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:05:37,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:05:37,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:05:37,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:05:37,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:05:37,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:05:37,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:05:37,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:05:37,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:05:37,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:05:37,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:05:37,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:05:37,916 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:05:37,916 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:05:37,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:05:37,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:05:37,917 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_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d123e3c2a314a098b4e7a140b822a7b44f2ae282ca90c74ec5605a44f397143 [2021-12-06 22:05:38,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:05:38,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:05:38,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:05:38,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:05:38,123 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:05:38,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-12-06 22:05:38,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/data/a9d9810cf/f0d0d96f166c419ba057cba9f785d39e/FLAG9f7e277d7 [2021-12-06 22:05:38,880 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:05:38,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-12-06 22:05:38,920 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/data/a9d9810cf/f0d0d96f166c419ba057cba9f785d39e/FLAG9f7e277d7 [2021-12-06 22:05:39,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/data/a9d9810cf/f0d0d96f166c419ba057cba9f785d39e [2021-12-06 22:05:39,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:05:39,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:05:39,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:05:39,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:05:39,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:05:39,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:05:39" (1/1) ... [2021-12-06 22:05:39,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26157840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:39, skipping insertion in model container [2021-12-06 22:05:39,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:05:39" (1/1) ... [2021-12-06 22:05:39,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:05:39,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:05:42,851 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_f57a2a31-db2b-4e99-a152-5d093fe0414e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-12-06 22:05:43,150 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:05:43,195 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:05:43,507 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_f57a2a31-db2b-4e99-a152-5d093fe0414e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i[490207,490220] [2021-12-06 22:05:43,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:05:43,768 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:05:43,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43 WrapperNode [2021-12-06 22:05:43,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:05:43,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:05:43,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:05:43,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:05:43,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:43,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,092 INFO L137 Inliner]: procedures = 713, calls = 6159, calls flagged for inlining = 240, calls inlined = 191, statements flattened = 9050 [2021-12-06 22:05:44,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:05:44,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:05:44,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:05:44,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:05:44,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:05:44,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:05:44,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:05:44,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:05:44,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (1/1) ... [2021-12-06 22:05:44,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:05:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:05:44,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:05:44,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:05:44,541 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-06 22:05:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-06 22:05:44,541 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msix_exact [2021-12-06 22:05:44,541 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msix_exact [2021-12-06 22:05:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_signal_notify [2021-12-06 22:05:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_signal_notify [2021-12-06 22:05:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_send [2021-12-06 22:05:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_send [2021-12-06 22:05:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_exists [2021-12-06 22:05:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_exists [2021-12-06 22:05:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_code_active [2021-12-06 22:05:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_code_active [2021-12-06 22:05:44,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_subscriber_mutex [2021-12-06 22:05:44,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_subscriber_mutex [2021-12-06 22:05:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_put [2021-12-06 22:05:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_put [2021-12-06 22:05:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 22:05:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 22:05:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_open [2021-12-06 22:05:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_open [2021-12-06 22:05:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_unregister_user_memory [2021-12-06 22:05:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_unregister_user_memory [2021-12-06 22:05:44,543 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_add_notification [2021-12-06 22:05:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_add_notification [2021-12-06 22:05:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_unlocked_ioctl [2021-12-06 22:05:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_unlocked_ioctl [2021-12-06 22:05:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-12-06 22:05:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-12-06 22:05:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 22:05:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 22:05:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_get_id [2021-12-06 22:05:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_get_id [2021-12-06 22:05:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-06 22:05:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-06 22:05:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_has_entry [2021-12-06 22:05:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_has_entry [2021-12-06 22:05:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_destroy [2021-12-06 22:05:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_destroy [2021-12-06 22:05:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_send_datagram [2021-12-06 22:05:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_send_datagram [2021-12-06 22:05:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-12-06 22:05:44,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-12-06 22:05:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_get [2021-12-06 22:05:44,546 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_get [2021-12-06 22:05:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_get_entry [2021-12-06 22:05:44,546 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_get_entry [2021-12-06 22:05:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-12-06 22:05:44,546 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-12-06 22:05:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure qp_acquire_queue_mutex [2021-12-06 22:05:44,546 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_acquire_queue_mutex [2021-12-06 22:05:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_get_context_id [2021-12-06 22:05:44,546 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_get_context_id [2021-12-06 22:05:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_map_queues [2021-12-06 22:05:44,547 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_map_queues [2021-12-06 22:05:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_add [2021-12-06 22:05:44,547 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_add [2021-12-06 22:05:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-06 22:05:44,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-06 22:05:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 22:05:44,547 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 22:05:44,547 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock___1 [2021-12-06 22:05:44,548 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock___1 [2021-12-06 22:05:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure no_printk [2021-12-06 22:05:44,548 INFO L138 BoogieDeclarations]: Found implementation of procedure no_printk [2021-12-06 22:05:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_get_head [2021-12-06 22:05:44,548 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_get_head [2021-12-06 22:05:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure dbell_delayed_dispatch [2021-12-06 22:05:44,548 INFO L138 BoogieDeclarations]: Found implementation of procedure dbell_delayed_dispatch [2021-12-06 22:05:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2021-12-06 22:05:44,548 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2021-12-06 22:05:44,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_vmci_host_dev [2021-12-06 22:05:44,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_vmci_host_dev [2021-12-06 22:05:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-06 22:05:44,549 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-06 22:05:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-06 22:05:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 22:05:44,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 22:05:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_qp_list [2021-12-06 22:05:44,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_qp_list [2021-12-06 22:05:44,549 INFO L130 BoogieDeclarations]: Found specification of procedure dg_delayed_dispatch [2021-12-06 22:05:44,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_delayed_dispatch [2021-12-06 22:05:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:05:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-12-06 22:05:44,550 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-12-06 22:05:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2021-12-06 22:05:44,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2021-12-06 22:05:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-06 22:05:44,550 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-06 22:05:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 22:05:44,550 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 22:05:44,550 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_host [2021-12-06 22:05:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_host [2021-12-06 22:05:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-06 22:05:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-06 22:05:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 22:05:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure qp_reset_saved_headers [2021-12-06 22:05:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_reset_saved_headers [2021-12-06 22:05:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_handle [2021-12-06 22:05:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_handle [2021-12-06 22:05:44,551 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_add_entry [2021-12-06 22:05:44,551 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_add_entry [2021-12-06 22:05:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid [2021-12-06 22:05:44,552 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid [2021-12-06 22:05:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_dispatch [2021-12-06 22:05:44,552 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_dispatch [2021-12-06 22:05:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 22:05:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-12-06 22:05:44,552 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-12-06 22:05:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_vmci_queue_kern_if [2021-12-06 22:05:44,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_vmci_queue_kern_if [2021-12-06 22:05:44,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:05:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure kmap [2021-12-06 22:05:44,553 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap [2021-12-06 22:05:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_find [2021-12-06 22:05:44,553 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_find [2021-12-06 22:05:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 22:05:44,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 22:05:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure __validate_creds [2021-12-06 22:05:44,553 INFO L138 BoogieDeclarations]: Found implementation of procedure __validate_creds [2021-12-06 22:05:44,553 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2021-12-06 22:05:44,553 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2021-12-06 22:05:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_clear_notify_call [2021-12-06 22:05:44,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_clear_notify_call [2021-12-06 22:05:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-12-06 22:05:44,554 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-12-06 22:05:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer [2021-12-06 22:05:44,554 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer [2021-12-06 22:05:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-06 22:05:44,554 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-06 22:05:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-06 22:05:44,555 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-06 22:05:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_unset_notify [2021-12-06 22:05:44,555 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_unset_notify [2021-12-06 22:05:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure __hlist_del [2021-12-06 22:05:44,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __hlist_del [2021-12-06 22:05:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_exit [2021-12-06 22:05:44,555 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_exit [2021-12-06 22:05:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_destroy [2021-12-06 22:05:44,555 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_destroy [2021-12-06 22:05:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure get_cred [2021-12-06 22:05:44,556 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cred [2021-12-06 22:05:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-06 22:05:44,556 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-06 22:05:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2021-12-06 22:05:44,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2021-12-06 22:05:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure qp_lock [2021-12-06 22:05:44,556 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_lock [2021-12-06 22:05:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2021-12-06 22:05:44,556 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2021-12-06 22:05:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_by_handle [2021-12-06 22:05:44,556 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_by_handle [2021-12-06 22:05:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 22:05:44,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 22:05:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure qp_notify_peer_local [2021-12-06 22:05:44,557 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_notify_peer_local [2021-12-06 22:05:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure vunmap [2021-12-06 22:05:44,557 INFO L138 BoogieDeclarations]: Found implementation of procedure vunmap [2021-12-06 22:05:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_get_user_memory [2021-12-06 22:05:44,557 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_get_user_memory [2021-12-06 22:05:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_fire_notification [2021-12-06 22:05:44,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_fire_notification [2021-12-06 22:05:44,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:05:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure qp_unlock [2021-12-06 22:05:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_unlock [2021-12-06 22:05:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_close [2021-12-06 22:05:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_close [2021-12-06 22:05:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:05:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_probe_device [2021-12-06 22:05:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_probe_device [2021-12-06 22:05:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid___1 [2021-12-06 22:05:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid___1 [2021-12-06 22:05:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_invalid___0 [2021-12-06 22:05:44,558 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_invalid___0 [2021-12-06 22:05:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_alloc_queue [2021-12-06 22:05:44,559 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_alloc_queue [2021-12-06 22:05:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:05:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 22:05:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure ctx_free_ctx [2021-12-06 22:05:44,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ctx_free_ctx [2021-12-06 22:05:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 22:05:44,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 22:05:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_poll [2021-12-06 22:05:44,559 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_poll [2021-12-06 22:05:44,559 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-06 22:05:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-06 22:05:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-06 22:05:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-06 22:05:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure qp_release_pages [2021-12-06 22:05:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_release_pages [2021-12-06 22:05:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure qp_cleanup_queue_mutex [2021-12-06 22:05:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_cleanup_queue_mutex [2021-12-06 22:05:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_get_size [2021-12-06 22:05:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_get_size [2021-12-06 22:05:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_hypercall [2021-12-06 22:05:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_hypercall [2021-12-06 22:05:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-06 22:05:44,561 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-06 22:05:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-06 22:05:44,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-06 22:05:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure qp_list_remove_entry [2021-12-06 22:05:44,561 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_list_remove_entry [2021-12-06 22:05:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 22:05:44,561 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 22:05:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_q_header_init [2021-12-06 22:05:44,561 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_q_header_init [2021-12-06 22:05:44,561 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add_rcu [2021-12-06 22:05:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add_rcu [2021-12-06 22:05:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_register_user_memory [2021-12-06 22:05:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_register_user_memory [2021-12-06 22:05:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-06 22:05:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-06 22:05:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_guest_work [2021-12-06 22:05:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_guest_work [2021-12-06 22:05:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure drv_cp_harray_to_user [2021-12-06 22:05:44,562 INFO L138 BoogieDeclarations]: Found implementation of procedure drv_cp_harray_to_user [2021-12-06 22:05:44,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:05:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:05:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 22:05:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 22:05:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_remove_tail [2021-12-06 22:05:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_remove_tail [2021-12-06 22:05:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_subscriber_mutex [2021-12-06 22:05:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_subscriber_mutex [2021-12-06 22:05:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-06 22:05:44,563 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-06 22:05:44,563 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_supports_host_qp [2021-12-06 22:05:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_supports_host_qp [2021-12-06 22:05:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 22:05:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 22:05:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 22:05:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 22:05:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_detach [2021-12-06 22:05:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_detach [2021-12-06 22:05:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_enqueue_datagram [2021-12-06 22:05:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_enqueue_datagram [2021-12-06 22:05:44,564 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2021-12-06 22:05:44,564 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2021-12-06 22:05:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_unmap_queues [2021-12-06 22:05:44,565 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_unmap_queues [2021-12-06 22:05:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_rcu [2021-12-06 22:05:44,565 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_rcu [2021-12-06 22:05:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_qp_list [2021-12-06 22:05:44,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_qp_list [2021-12-06 22:05:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 22:05:44,565 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 22:05:44,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 22:05:44,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 22:05:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-06 22:05:44,566 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-06 22:05:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 22:05:44,566 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 22:05:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2021-12-06 22:05:44,566 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2021-12-06 22:05:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 22:05:44,566 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 22:05:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msix [2021-12-06 22:05:44,566 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msix [2021-12-06 22:05:44,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_vmci_queue_kern_if [2021-12-06 22:05:44,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_vmci_queue_kern_if [2021-12-06 22:05:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_notify_dbell [2021-12-06 22:05:44,567 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_notify_dbell [2021-12-06 22:05:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_append_entry [2021-12-06 22:05:44,567 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_append_entry [2021-12-06 22:05:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-12-06 22:05:44,567 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-12-06 22:05:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-06 22:05:44,567 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-06 22:05:44,567 INFO L130 BoogieDeclarations]: Found specification of procedure qp_broker_handle_to_entry [2021-12-06 22:05:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_broker_handle_to_entry [2021-12-06 22:05:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qpair_detach [2021-12-06 22:05:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qpair_detach [2021-12-06 22:05:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-12-06 22:05:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-12-06 22:05:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:05:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 22:05:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 22:05:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_hash [2021-12-06 22:05:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_hash [2021-12-06 22:05:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_create [2021-12-06 22:05:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_create [2021-12-06 22:05:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure event_find [2021-12-06 22:05:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure event_find [2021-12-06 22:05:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure qp_broker_alloc [2021-12-06 22:05:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_broker_alloc [2021-12-06 22:05:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:05:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch_host_work [2021-12-06 22:05:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch_host_work [2021-12-06 22:05:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2021-12-06 22:05:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2021-12-06 22:05:44,569 INFO L130 BoogieDeclarations]: Found specification of procedure hash_32 [2021-12-06 22:05:44,569 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_32 [2021-12-06 22:05:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail_rcu [2021-12-06 22:05:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail_rcu [2021-12-06 22:05:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock___1 [2021-12-06 22:05:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock___1 [2021-12-06 22:05:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_endpoint_destroy [2021-12-06 22:05:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_endpoint_destroy [2021-12-06 22:05:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:05:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure dg_dispatch_as_guest [2021-12-06 22:05:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure dg_dispatch_as_guest [2021-12-06 22:05:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-06 22:05:44,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-06 22:05:44,570 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 22:05:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 22:05:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-06 22:05:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-06 22:05:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_dispatch [2021-12-06 22:05:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_dispatch [2021-12-06 22:05:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure qp_release_queue_mutex [2021-12-06 22:05:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_release_queue_mutex [2021-12-06 22:05:44,571 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-06 22:05:44,571 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-06 22:05:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_route [2021-12-06 22:05:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_route [2021-12-06 22:05:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure get_user_pages_fast [2021-12-06 22:05:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure get_user_pages_fast [2021-12-06 22:05:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure qp_free_queue [2021-12-06 22:05:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_free_queue [2021-12-06 22:05:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure qp_host_free_queue [2021-12-06 22:05:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_host_free_queue [2021-12-06 22:05:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-06 22:05:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-06 22:05:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure atomic64_set [2021-12-06 22:05:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic64_set [2021-12-06 22:05:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_datagram_get_priv_flags [2021-12-06 22:05:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_datagram_get_priv_flags [2021-12-06 22:05:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_exists [2021-12-06 22:05:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_exists [2021-12-06 22:05:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_rcu [2021-12-06 22:05:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_rcu [2021-12-06 22:05:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_remove [2021-12-06 22:05:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_remove [2021-12-06 22:05:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 22:05:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 22:05:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure qp_init_queue_mutex [2021-12-06 22:05:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_init_queue_mutex [2021-12-06 22:05:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:05:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_context_get_priv_flags [2021-12-06 22:05:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_context_get_priv_flags [2021-12-06 22:05:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_2 [2021-12-06 22:05:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_2 [2021-12-06 22:05:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-06 22:05:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-06 22:05:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 22:05:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 22:05:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure put_cred [2021-12-06 22:05:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure put_cred [2021-12-06 22:05:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work___0 [2021-12-06 22:05:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work___0 [2021-12-06 22:05:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-12-06 22:05:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-12-06 22:05:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-06 22:05:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-06 22:05:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_guest_endpoints_exit [2021-12-06 22:05:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_guest_endpoints_exit [2021-12-06 22:05:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_HLIST_NODE [2021-12-06 22:05:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_HLIST_NODE [2021-12-06 22:05:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-06 22:05:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-06 22:05:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-06 22:05:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-06 22:05:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_is_equal [2021-12-06 22:05:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_is_equal [2021-12-06 22:05:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_destroy [2021-12-06 22:05:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_destroy [2021-12-06 22:05:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure qp_guest_handle_to_entry [2021-12-06 22:05:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_guest_handle_to_entry [2021-12-06 22:05:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-12-06 22:05:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-12-06 22:05:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure qp_detatch [2021-12-06 22:05:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure qp_detatch [2021-12-06 22:05:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure handle_arr_calc_size [2021-12-06 22:05:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_arr_calc_size [2021-12-06 22:05:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2021-12-06 22:05:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2021-12-06 22:05:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure hlist_unhashed [2021-12-06 22:05:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure hlist_unhashed [2021-12-06 22:05:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_qp_broker_alloc [2021-12-06 22:05:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_qp_broker_alloc [2021-12-06 22:05:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-06 22:05:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-06 22:05:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure kunmap [2021-12-06 22:05:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kunmap [2021-12-06 22:05:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-06 22:05:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-06 22:05:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-06 22:05:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-06 22:05:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2021-12-06 22:05:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2021-12-06 22:05:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_get [2021-12-06 22:05:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_get [2021-12-06 22:05:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_vmci_host_dev [2021-12-06 22:05:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_vmci_host_dev [2021-12-06 22:05:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-06 22:05:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-06 22:05:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-12-06 22:05:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-12-06 22:05:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_handle_arr_remove_entry [2021-12-06 22:05:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_handle_arr_remove_entry [2021-12-06 22:05:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_event_unsubscribe [2021-12-06 22:05:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_event_unsubscribe [2021-12-06 22:05:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_deny_interaction [2021-12-06 22:05:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_deny_interaction [2021-12-06 22:05:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_guest_remove_device [2021-12-06 22:05:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_guest_remove_device [2021-12-06 22:05:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_qp_create [2021-12-06 22:05:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_qp_create [2021-12-06 22:05:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_host_code_active [2021-12-06 22:05:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_host_code_active [2021-12-06 22:05:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-06 22:05:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-06 22:05:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 22:05:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 22:05:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-06 22:05:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-06 22:05:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2021-12-06 22:05:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2021-12-06 22:05:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_lookup [2021-12-06 22:05:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_lookup [2021-12-06 22:05:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-12-06 22:05:44,581 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-12-06 22:05:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:05:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_ctx_create [2021-12-06 22:05:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_ctx_create [2021-12-06 22:05:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure vmci_resource_put [2021-12-06 22:05:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure vmci_resource_put [2021-12-06 22:05:45,274 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:05:45,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:05:45,585 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 22:05:58,061 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:05:58,082 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:05:58,082 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:05:58,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:05:58 BoogieIcfgContainer [2021-12-06 22:05:58,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:05:58,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:05:58,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:05:58,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:05:58,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:05:39" (1/3) ... [2021-12-06 22:05:58,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1711b73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:05:58, skipping insertion in model container [2021-12-06 22:05:58,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:05:43" (2/3) ... [2021-12-06 22:05:58,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1711b73e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:05:58, skipping insertion in model container [2021-12-06 22:05:58,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:05:58" (3/3) ... [2021-12-06 22:05:58,092 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--misc--vmw_vmci--vmw_vmci.ko-entry_point.cil.out.i [2021-12-06 22:05:58,095 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:05:58,096 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:05:58,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:05:58,143 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:05:58,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:05:58,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 3381 states, 2333 states have (on average 1.3686240891555936) internal successors, (3193), 2400 states have internal predecessors, (3193), 843 states have call successors, (843), 204 states have call predecessors, (843), 203 states have return successors, (839), 833 states have call predecessors, (839), 839 states have call successors, (839) [2021-12-06 22:05:58,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 22:05:58,212 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:58,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:05:58,213 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:58,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash -221624845, now seen corresponding path program 1 times [2021-12-06 22:05:58,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:58,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493194348] [2021-12-06 22:05:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:58,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:58,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:58,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493194348] [2021-12-06 22:05:58,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493194348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:58,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:58,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:05:58,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965405708] [2021-12-06 22:05:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:58,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:05:58,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:05:58,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:05:58,800 INFO L87 Difference]: Start difference. First operand has 3381 states, 2333 states have (on average 1.3686240891555936) internal successors, (3193), 2400 states have internal predecessors, (3193), 843 states have call successors, (843), 204 states have call predecessors, (843), 203 states have return successors, (839), 833 states have call predecessors, (839), 839 states have call successors, (839) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:05:59,055 INFO L93 Difference]: Finished difference Result 6757 states and 9929 transitions. [2021-12-06 22:05:59,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:05:59,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 22:05:59,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:05:59,090 INFO L225 Difference]: With dead ends: 6757 [2021-12-06 22:05:59,090 INFO L226 Difference]: Without dead ends: 3373 [2021-12-06 22:05:59,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:05:59,114 INFO L933 BasicCegarLoop]: 4856 mSDtfsCounter, 1 mSDsluCounter, 4853 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 9709 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:05:59,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 9709 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:05:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2021-12-06 22:05:59,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3371. [2021-12-06 22:05:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3371 states, 2329 states have (on average 1.3662516101331044) internal successors, (3182), 2390 states have internal predecessors, (3182), 839 states have call successors, (839), 203 states have call predecessors, (839), 202 states have return successors, (824), 818 states have call predecessors, (824), 824 states have call successors, (824) [2021-12-06 22:05:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3371 states to 3371 states and 4845 transitions. [2021-12-06 22:05:59,295 INFO L78 Accepts]: Start accepts. Automaton has 3371 states and 4845 transitions. Word has length 27 [2021-12-06 22:05:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:05:59,295 INFO L470 AbstractCegarLoop]: Abstraction has 3371 states and 4845 transitions. [2021-12-06 22:05:59,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:05:59,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3371 states and 4845 transitions. [2021-12-06 22:05:59,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 22:05:59,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:05:59,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:05:59,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:05:59,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:05:59,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:05:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1647899974, now seen corresponding path program 1 times [2021-12-06 22:05:59,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:05:59,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689213869] [2021-12-06 22:05:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:05:59,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:05:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:05:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:05:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:05:59,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:05:59,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689213869] [2021-12-06 22:05:59,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689213869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:05:59,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:05:59,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:05:59,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248917034] [2021-12-06 22:05:59,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:05:59,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:05:59,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:05:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:05:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:05:59,593 INFO L87 Difference]: Start difference. First operand 3371 states and 4845 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:04,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:06:07,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:06:09,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:09,973 INFO L93 Difference]: Finished difference Result 10256 states and 14831 transitions. [2021-12-06 22:06:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:06:09,974 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-12-06 22:06:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:10,015 INFO L225 Difference]: With dead ends: 10256 [2021-12-06 22:06:10,015 INFO L226 Difference]: Without dead ends: 6891 [2021-12-06 22:06:10,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:06:10,029 INFO L933 BasicCegarLoop]: 7944 mSDtfsCounter, 5335 mSDsluCounter, 7654 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 1673 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 15598 SdHoareTripleChecker+Invalid, 4522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1673 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:10,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5924 Valid, 15598 Invalid, 4522 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1673 Valid, 2847 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-12-06 22:06:10,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6891 states. [2021-12-06 22:06:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6891 to 6637. [2021-12-06 22:06:10,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6637 states, 4589 states have (on average 1.3660928306820659) internal successors, (6269), 4696 states have internal predecessors, (6269), 1643 states have call successors, (1643), 405 states have call predecessors, (1643), 404 states have return successors, (1628), 1616 states have call predecessors, (1628), 1628 states have call successors, (1628) [2021-12-06 22:06:10,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6637 states to 6637 states and 9540 transitions. [2021-12-06 22:06:10,294 INFO L78 Accepts]: Start accepts. Automaton has 6637 states and 9540 transitions. Word has length 29 [2021-12-06 22:06:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:10,294 INFO L470 AbstractCegarLoop]: Abstraction has 6637 states and 9540 transitions. [2021-12-06 22:06:10,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:10,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6637 states and 9540 transitions. [2021-12-06 22:06:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:06:10,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:10,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:10,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:06:10,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash -8374377, now seen corresponding path program 1 times [2021-12-06 22:06:10,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:10,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354278383] [2021-12-06 22:06:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:10,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:06:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:10,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:10,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354278383] [2021-12-06 22:06:10,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354278383] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:06:10,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183000400] [2021-12-06 22:06:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:10,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:10,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:10,568 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:06:10,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:06:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:11,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 4888 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:06:11,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:06:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:06:11,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:06:11,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183000400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:11,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:06:11,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 22:06:11,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721982233] [2021-12-06 22:06:11,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:11,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:11,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:11,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:11,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:11,476 INFO L87 Difference]: Start difference. First operand 6637 states and 9540 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:11,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:11,592 INFO L93 Difference]: Finished difference Result 6639 states and 9541 transitions. [2021-12-06 22:06:11,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:11,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-12-06 22:06:11,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:11,641 INFO L225 Difference]: With dead ends: 6639 [2021-12-06 22:06:11,641 INFO L226 Difference]: Without dead ends: 6636 [2021-12-06 22:06:11,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:11,644 INFO L933 BasicCegarLoop]: 4841 mSDtfsCounter, 4812 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4812 SdHoareTripleChecker+Valid, 4841 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:11,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4812 Valid, 4841 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-12-06 22:06:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 6636. [2021-12-06 22:06:11,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6636 states, 4589 states have (on average 1.3658749182828502) internal successors, (6268), 4695 states have internal predecessors, (6268), 1642 states have call successors, (1642), 405 states have call predecessors, (1642), 404 states have return successors, (1628), 1616 states have call predecessors, (1628), 1628 states have call successors, (1628) [2021-12-06 22:06:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6636 states to 6636 states and 9538 transitions. [2021-12-06 22:06:11,860 INFO L78 Accepts]: Start accepts. Automaton has 6636 states and 9538 transitions. Word has length 33 [2021-12-06 22:06:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:11,861 INFO L470 AbstractCegarLoop]: Abstraction has 6636 states and 9538 transitions. [2021-12-06 22:06:11,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6636 states and 9538 transitions. [2021-12-06 22:06:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 22:06:11,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:11,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:11,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:06:12,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:12,064 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash -260968426, now seen corresponding path program 1 times [2021-12-06 22:06:12,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:12,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173900828] [2021-12-06 22:06:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:12,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:06:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:12,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:12,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173900828] [2021-12-06 22:06:12,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173900828] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:06:12,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285312559] [2021-12-06 22:06:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:12,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:12,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:12,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:06:12,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:06:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:13,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 4890 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:06:13,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:06:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:06:13,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:06:13,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285312559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:13,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:06:13,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 22:06:13,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758100463] [2021-12-06 22:06:13,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:13,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:13,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:13,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:13,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:13,269 INFO L87 Difference]: Start difference. First operand 6636 states and 9538 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:13,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:13,379 INFO L93 Difference]: Finished difference Result 6638 states and 9539 transitions. [2021-12-06 22:06:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:13,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-12-06 22:06:13,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:13,446 INFO L225 Difference]: With dead ends: 6638 [2021-12-06 22:06:13,446 INFO L226 Difference]: Without dead ends: 6635 [2021-12-06 22:06:13,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:13,449 INFO L933 BasicCegarLoop]: 4839 mSDtfsCounter, 4809 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 4839 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:13,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4809 Valid, 4839 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6635 states. [2021-12-06 22:06:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6635 to 6635. [2021-12-06 22:06:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6635 states, 4589 states have (on average 1.3656570058836348) internal successors, (6267), 4694 states have internal predecessors, (6267), 1641 states have call successors, (1641), 405 states have call predecessors, (1641), 404 states have return successors, (1628), 1616 states have call predecessors, (1628), 1628 states have call successors, (1628) [2021-12-06 22:06:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6635 states to 6635 states and 9536 transitions. [2021-12-06 22:06:13,700 INFO L78 Accepts]: Start accepts. Automaton has 6635 states and 9536 transitions. Word has length 34 [2021-12-06 22:06:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:13,700 INFO L470 AbstractCegarLoop]: Abstraction has 6635 states and 9536 transitions. [2021-12-06 22:06:13,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:13,701 INFO L276 IsEmpty]: Start isEmpty. Operand 6635 states and 9536 transitions. [2021-12-06 22:06:13,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 22:06:13,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:13,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:13,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:06:13,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:13,903 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:13,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:13,904 INFO L85 PathProgramCache]: Analyzing trace with hash 498555514, now seen corresponding path program 1 times [2021-12-06 22:06:13,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:13,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822225553] [2021-12-06 22:06:13,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:13,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:06:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:14,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:14,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822225553] [2021-12-06 22:06:14,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822225553] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:06:14,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929466286] [2021-12-06 22:06:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:14,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:14,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:06:14,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:06:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:14,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 4892 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:06:14,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:06:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:06:15,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:06:15,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929466286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:15,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:06:15,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 22:06:15,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934780929] [2021-12-06 22:06:15,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:15,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:15,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:15,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:15,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:15,004 INFO L87 Difference]: Start difference. First operand 6635 states and 9536 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:15,172 INFO L93 Difference]: Finished difference Result 10444 states and 14724 transitions. [2021-12-06 22:06:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:15,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-06 22:06:15,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:15,222 INFO L225 Difference]: With dead ends: 10444 [2021-12-06 22:06:15,222 INFO L226 Difference]: Without dead ends: 10440 [2021-12-06 22:06:15,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:15,228 INFO L933 BasicCegarLoop]: 5316 mSDtfsCounter, 4728 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4728 SdHoareTripleChecker+Valid, 8035 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:15,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 8035 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:15,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10440 states. [2021-12-06 22:06:15,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10440 to 10432. [2021-12-06 22:06:15,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10432 states, 7162 states have (on average 1.349064507120916) internal successors, (9662), 7337 states have internal predecessors, (9662), 2530 states have call successors, (2530), 740 states have call predecessors, (2530), 739 states have return successors, (2519), 2495 states have call predecessors, (2519), 2519 states have call successors, (2519) [2021-12-06 22:06:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 14711 transitions. [2021-12-06 22:06:15,531 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 14711 transitions. Word has length 35 [2021-12-06 22:06:15,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:15,531 INFO L470 AbstractCegarLoop]: Abstraction has 10432 states and 14711 transitions. [2021-12-06 22:06:15,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 14711 transitions. [2021-12-06 22:06:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 22:06:15,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:15,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:15,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:06:15,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:15,733 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1726001255, now seen corresponding path program 1 times [2021-12-06 22:06:15,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:15,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024138479] [2021-12-06 22:06:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:15,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:06:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:15,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:15,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024138479] [2021-12-06 22:06:15,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024138479] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:06:15,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145574779] [2021-12-06 22:06:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:15,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:15,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:15,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:06:15,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:06:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:16,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 4894 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:06:16,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:06:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:06:16,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:06:16,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145574779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:16,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:06:16,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 22:06:16,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989542533] [2021-12-06 22:06:16,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:16,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:16,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:16,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:16,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:16,725 INFO L87 Difference]: Start difference. First operand 10432 states and 14711 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:16,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:16,913 INFO L93 Difference]: Finished difference Result 10434 states and 14712 transitions. [2021-12-06 22:06:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:16,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2021-12-06 22:06:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:16,941 INFO L225 Difference]: With dead ends: 10434 [2021-12-06 22:06:16,941 INFO L226 Difference]: Without dead ends: 10431 [2021-12-06 22:06:16,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:16,945 INFO L933 BasicCegarLoop]: 4833 mSDtfsCounter, 4801 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4801 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:16,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4801 Valid, 4833 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:16,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-12-06 22:06:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10431. [2021-12-06 22:06:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 7162 states have (on average 1.3489248813180676) internal successors, (9661), 7336 states have internal predecessors, (9661), 2529 states have call successors, (2529), 740 states have call predecessors, (2529), 739 states have return successors, (2519), 2495 states have call predecessors, (2519), 2519 states have call successors, (2519) [2021-12-06 22:06:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 14709 transitions. [2021-12-06 22:06:17,232 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 14709 transitions. Word has length 36 [2021-12-06 22:06:17,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:17,232 INFO L470 AbstractCegarLoop]: Abstraction has 10431 states and 14709 transitions. [2021-12-06 22:06:17,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:17,233 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 14709 transitions. [2021-12-06 22:06:17,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 22:06:17,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:17,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:17,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 22:06:17,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:17,434 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:17,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1967779491, now seen corresponding path program 1 times [2021-12-06 22:06:17,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:17,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603314805] [2021-12-06 22:06:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:17,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:06:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:17,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:17,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603314805] [2021-12-06 22:06:17,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603314805] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:06:17,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552114921] [2021-12-06 22:06:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:17,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:17,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:17,598 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:06:17,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:06:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:18,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 4896 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:06:18,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:06:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:06:18,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:06:18,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552114921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:18,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:06:18,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 22:06:18,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272768586] [2021-12-06 22:06:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:18,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:18,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:18,443 INFO L87 Difference]: Start difference. First operand 10431 states and 14709 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:18,858 INFO L93 Difference]: Finished difference Result 27282 states and 38819 transitions. [2021-12-06 22:06:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:18,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-06 22:06:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:18,923 INFO L225 Difference]: With dead ends: 27282 [2021-12-06 22:06:18,923 INFO L226 Difference]: Without dead ends: 16857 [2021-12-06 22:06:18,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:18,961 INFO L933 BasicCegarLoop]: 5597 mSDtfsCounter, 4094 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 8612 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:18,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4094 Valid, 8612 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:18,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2021-12-06 22:06:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 16814. [2021-12-06 22:06:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16814 states, 11541 states have (on average 1.3417381509401265) internal successors, (15485), 11825 states have internal predecessors, (15485), 3966 states have call successors, (3966), 1300 states have call predecessors, (3966), 1306 states have return successors, (4152), 3925 states have call predecessors, (4152), 3952 states have call successors, (4152) [2021-12-06 22:06:19,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16814 states to 16814 states and 23603 transitions. [2021-12-06 22:06:19,483 INFO L78 Accepts]: Start accepts. Automaton has 16814 states and 23603 transitions. Word has length 37 [2021-12-06 22:06:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:19,483 INFO L470 AbstractCegarLoop]: Abstraction has 16814 states and 23603 transitions. [2021-12-06 22:06:19,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:19,483 INFO L276 IsEmpty]: Start isEmpty. Operand 16814 states and 23603 transitions. [2021-12-06 22:06:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 22:06:19,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:19,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:19,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:06:19,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 22:06:19,685 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:19,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:19,685 INFO L85 PathProgramCache]: Analyzing trace with hash -872965348, now seen corresponding path program 1 times [2021-12-06 22:06:19,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:19,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178315846] [2021-12-06 22:06:19,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:19,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:06:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:19,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:19,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178315846] [2021-12-06 22:06:19,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178315846] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:06:19,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765958332] [2021-12-06 22:06:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:19,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:19,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:19,885 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:06:19,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:06:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:20,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 4898 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:06:20,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:06:20,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:06:20,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:06:20,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765958332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:20,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:06:20,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 22:06:20,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287559083] [2021-12-06 22:06:20,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:20,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:20,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:20,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:20,691 INFO L87 Difference]: Start difference. First operand 16814 states and 23603 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:21,459 INFO L93 Difference]: Finished difference Result 50386 states and 72507 transitions. [2021-12-06 22:06:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:21,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-06 22:06:21,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:21,604 INFO L225 Difference]: With dead ends: 50386 [2021-12-06 22:06:21,604 INFO L226 Difference]: Without dead ends: 33578 [2021-12-06 22:06:21,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:21,650 INFO L933 BasicCegarLoop]: 5935 mSDtfsCounter, 4869 mSDsluCounter, 4896 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4869 SdHoareTripleChecker+Valid, 10831 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:21,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4869 Valid, 10831 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33578 states. [2021-12-06 22:06:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33578 to 33539. [2021-12-06 22:06:22,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33539 states, 23027 states have (on average 1.3420766925782777) internal successors, (30904), 23588 states have internal predecessors, (30904), 7907 states have call successors, (7907), 2595 states have call predecessors, (7907), 2604 states have return successors, (9180), 7829 states have call predecessors, (9180), 7892 states have call successors, (9180) [2021-12-06 22:06:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33539 states to 33539 states and 47991 transitions. [2021-12-06 22:06:22,601 INFO L78 Accepts]: Start accepts. Automaton has 33539 states and 47991 transitions. Word has length 38 [2021-12-06 22:06:22,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:22,602 INFO L470 AbstractCegarLoop]: Abstraction has 33539 states and 47991 transitions. [2021-12-06 22:06:22,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 33539 states and 47991 transitions. [2021-12-06 22:06:22,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 22:06:22,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:22,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:22,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:06:22,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 22:06:22,804 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:22,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:22,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1293460416, now seen corresponding path program 1 times [2021-12-06 22:06:22,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:22,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727833862] [2021-12-06 22:06:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:22,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:06:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:23,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:23,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727833862] [2021-12-06 22:06:23,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727833862] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:06:23,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902857098] [2021-12-06 22:06:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:23,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:23,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:06:23,020 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:06:23,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:06:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:23,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 4900 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:06:23,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:06:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:06:23,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:06:23,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902857098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:23,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:06:23,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-12-06 22:06:23,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415051156] [2021-12-06 22:06:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:23,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:06:23,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:06:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:23,815 INFO L87 Difference]: Start difference. First operand 33539 states and 47991 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:24,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:24,501 INFO L93 Difference]: Finished difference Result 33667 states and 48081 transitions. [2021-12-06 22:06:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:06:24,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-12-06 22:06:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:24,623 INFO L225 Difference]: With dead ends: 33667 [2021-12-06 22:06:24,623 INFO L226 Difference]: Without dead ends: 33635 [2021-12-06 22:06:24,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:24,645 INFO L933 BasicCegarLoop]: 4827 mSDtfsCounter, 4742 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4742 SdHoareTripleChecker+Valid, 4881 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:24,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4742 Valid, 4881 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:06:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33635 states. [2021-12-06 22:06:25,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33635 to 33633. [2021-12-06 22:06:25,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33633 states, 23093 states have (on average 1.3401463646992595) internal successors, (30948), 23653 states have internal predecessors, (30948), 7900 states have call successors, (7900), 2630 states have call predecessors, (7900), 2639 states have return successors, (9174), 7823 states have call predecessors, (9174), 7886 states have call successors, (9174) [2021-12-06 22:06:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33633 states to 33633 states and 48022 transitions. [2021-12-06 22:06:25,818 INFO L78 Accepts]: Start accepts. Automaton has 33633 states and 48022 transitions. Word has length 39 [2021-12-06 22:06:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:06:25,818 INFO L470 AbstractCegarLoop]: Abstraction has 33633 states and 48022 transitions. [2021-12-06 22:06:25,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:06:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 33633 states and 48022 transitions. [2021-12-06 22:06:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 22:06:25,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:06:25,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:06:25,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:06:26,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:06:26,022 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:06:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:06:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1815788574, now seen corresponding path program 1 times [2021-12-06 22:06:26,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:06:26,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318635594] [2021-12-06 22:06:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:06:26,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:06:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:06:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:06:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:06:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:06:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:06:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 22:06:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 22:06:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:06:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:06:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:06:26,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:06:26,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318635594] [2021-12-06 22:06:26,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318635594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:06:26,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:06:26,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:06:26,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663489539] [2021-12-06 22:06:26,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:06:26,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:06:26,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:06:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:06:26,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:06:26,237 INFO L87 Difference]: Start difference. First operand 33633 states and 48022 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:06:30,659 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:06:45,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:06:48,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:06:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:06:56,964 INFO L93 Difference]: Finished difference Result 113655 states and 166762 transitions. [2021-12-06 22:06:56,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:06:56,965 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2021-12-06 22:06:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:06:57,266 INFO L225 Difference]: With dead ends: 113655 [2021-12-06 22:06:57,266 INFO L226 Difference]: Without dead ends: 80028 [2021-12-06 22:06:57,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:06:57,455 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 11878 mSDsluCounter, 6700 mSDsCounter, 0 mSdLazyCounter, 10627 mSolverCounterSat, 7554 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12627 SdHoareTripleChecker+Valid, 11383 SdHoareTripleChecker+Invalid, 18183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7554 IncrementalHoareTripleChecker+Valid, 10627 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:06:57,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12627 Valid, 11383 Invalid, 18183 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7554 Valid, 10627 Invalid, 2 Unknown, 0 Unchecked, 28.2s Time] [2021-12-06 22:06:57,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80028 states. [2021-12-06 22:06:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80028 to 72706. [2021-12-06 22:06:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72706 states, 49864 states have (on average 1.3357933579335792) internal successors, (66608), 50940 states have internal predecessors, (66608), 17123 states have call successors, (17123), 5257 states have call predecessors, (17123), 5718 states have return successors, (21132), 17520 states have call predecessors, (21132), 17108 states have call successors, (21132) [2021-12-06 22:07:00,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72706 states to 72706 states and 104863 transitions. [2021-12-06 22:07:00,034 INFO L78 Accepts]: Start accepts. Automaton has 72706 states and 104863 transitions. Word has length 70 [2021-12-06 22:07:00,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:00,034 INFO L470 AbstractCegarLoop]: Abstraction has 72706 states and 104863 transitions. [2021-12-06 22:07:00,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:07:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 72706 states and 104863 transitions. [2021-12-06 22:07:00,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 22:07:00,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:00,041 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:00,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:07:00,041 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:00,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:00,042 INFO L85 PathProgramCache]: Analyzing trace with hash -783823816, now seen corresponding path program 1 times [2021-12-06 22:07:00,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:00,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278061145] [2021-12-06 22:07:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:00,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:07:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:07:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:07:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 22:07:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:07:00,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 22:07:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 22:07:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 22:07:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:07:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 22:07:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:07:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 22:07:00,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:00,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278061145] [2021-12-06 22:07:00,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278061145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:00,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:07:00,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:07:00,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799738418] [2021-12-06 22:07:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:00,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:07:00,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:07:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:07:00,297 INFO L87 Difference]: Start difference. First operand 72706 states and 104863 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:07:05,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:07:11,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:07:15,295 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:07:33,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:07:37,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:37,934 INFO L93 Difference]: Finished difference Result 177924 states and 260235 transitions. [2021-12-06 22:07:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:07:37,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 116 [2021-12-06 22:07:37,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:38,310 INFO L225 Difference]: With dead ends: 177924 [2021-12-06 22:07:38,310 INFO L226 Difference]: Without dead ends: 105224 [2021-12-06 22:07:38,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:07:38,483 INFO L933 BasicCegarLoop]: 3924 mSDtfsCounter, 10367 mSDsluCounter, 3798 mSDsCounter, 0 mSdLazyCounter, 13483 mSolverCounterSat, 7038 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11061 SdHoareTripleChecker+Valid, 7722 SdHoareTripleChecker+Invalid, 20524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7038 IncrementalHoareTripleChecker+Valid, 13483 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:38,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11061 Valid, 7722 Invalid, 20524 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7038 Valid, 13483 Invalid, 3 Unknown, 0 Unchecked, 34.2s Time] [2021-12-06 22:07:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105224 states. [2021-12-06 22:07:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105224 to 95518. [2021-12-06 22:07:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95518 states, 65397 states have (on average 1.332186491735095) internal successors, (87121), 66871 states have internal predecessors, (87121), 22346 states have call successors, (22346), 7154 states have call predecessors, (22346), 7774 states have return successors, (27627), 22846 states have call predecessors, (27627), 22331 states have call successors, (27627) [2021-12-06 22:07:42,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95518 states to 95518 states and 137094 transitions. [2021-12-06 22:07:42,244 INFO L78 Accepts]: Start accepts. Automaton has 95518 states and 137094 transitions. Word has length 116 [2021-12-06 22:07:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:42,244 INFO L470 AbstractCegarLoop]: Abstraction has 95518 states and 137094 transitions. [2021-12-06 22:07:42,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (17), 6 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:07:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 95518 states and 137094 transitions. [2021-12-06 22:07:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 22:07:42,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:42,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:42,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:07:42,248 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:42,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash 605991507, now seen corresponding path program 1 times [2021-12-06 22:07:42,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:42,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220448702] [2021-12-06 22:07:42,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:42,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:07:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 22:07:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:07:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:07:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:07:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:07:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:07:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 22:07:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:07:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:07:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 22:07:42,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220448702] [2021-12-06 22:07:42,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220448702] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:07:42,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890782604] [2021-12-06 22:07:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:42,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:07:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:07:42,585 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:07:42,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:07:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:43,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 5698 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:07:43,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:07:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:07:43,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:07:43,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890782604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:07:43,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:07:43,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-06 22:07:43,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215729731] [2021-12-06 22:07:43,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:07:43,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:07:43,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:07:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:07:43,500 INFO L87 Difference]: Start difference. First operand 95518 states and 137094 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:07:47,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:07:47,805 INFO L93 Difference]: Finished difference Result 236068 states and 338751 transitions. [2021-12-06 22:07:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:07:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 118 [2021-12-06 22:07:47,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:07:48,369 INFO L225 Difference]: With dead ends: 236068 [2021-12-06 22:07:48,370 INFO L226 Difference]: Without dead ends: 140556 [2021-12-06 22:07:48,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:07:48,651 INFO L933 BasicCegarLoop]: 6166 mSDtfsCounter, 4781 mSDsluCounter, 4788 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 10954 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:07:48,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4781 Valid, 10954 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:07:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140556 states. [2021-12-06 22:07:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140556 to 140507. [2021-12-06 22:07:53,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140507 states, 96243 states have (on average 1.332283906362021) internal successors, (128223), 98404 states have internal predecessors, (128223), 32829 states have call successors, (32829), 10529 states have call predecessors, (32829), 11434 states have return successors, (40545), 33563 states have call predecessors, (40545), 32813 states have call successors, (40545) [2021-12-06 22:07:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140507 states to 140507 states and 201597 transitions. [2021-12-06 22:07:54,397 INFO L78 Accepts]: Start accepts. Automaton has 140507 states and 201597 transitions. Word has length 118 [2021-12-06 22:07:54,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:07:54,397 INFO L470 AbstractCegarLoop]: Abstraction has 140507 states and 201597 transitions. [2021-12-06 22:07:54,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:07:54,397 INFO L276 IsEmpty]: Start isEmpty. Operand 140507 states and 201597 transitions. [2021-12-06 22:07:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 22:07:54,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:07:54,403 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:07:54,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:07:54,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:07:54,605 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:07:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:07:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash -960633533, now seen corresponding path program 1 times [2021-12-06 22:07:54,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:07:54,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852239468] [2021-12-06 22:07:54,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:54,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:07:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:07:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 22:07:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:07:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:07:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:07:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:07:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:07:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:07:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:07:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 22:07:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:07:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:07:55,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:07:55,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852239468] [2021-12-06 22:07:55,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852239468] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:07:55,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753422800] [2021-12-06 22:07:55,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:07:55,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:07:55,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:07:55,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:07:55,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:07:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:07:55,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 5910 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:07:55,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:07:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:07:56,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:07:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:07:56,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753422800] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:07:56,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:07:56,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-06 22:07:56,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748063434] [2021-12-06 22:07:56,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:07:56,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:07:56,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:07:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:07:56,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:07:56,262 INFO L87 Difference]: Start difference. First operand 140507 states and 201597 transitions. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 7 states have internal predecessors, (143), 5 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-06 22:08:00,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:08:02,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:08:27,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:08:30,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:08:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:08:39,632 INFO L93 Difference]: Finished difference Result 296250 states and 431212 transitions. [2021-12-06 22:08:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:08:39,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 7 states have internal predecessors, (143), 5 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 122 [2021-12-06 22:08:39,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:08:40,224 INFO L225 Difference]: With dead ends: 296250 [2021-12-06 22:08:40,225 INFO L226 Difference]: Without dead ends: 155749 [2021-12-06 22:08:40,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:08:40,549 INFO L933 BasicCegarLoop]: 4113 mSDtfsCounter, 4806 mSDsluCounter, 13898 mSDsCounter, 0 mSdLazyCounter, 13227 mSolverCounterSat, 3842 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5319 SdHoareTripleChecker+Valid, 18011 SdHoareTripleChecker+Invalid, 17073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3842 IncrementalHoareTripleChecker+Valid, 13227 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:08:40,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5319 Valid, 18011 Invalid, 17073 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3842 Valid, 13227 Invalid, 4 Unknown, 0 Unchecked, 34.4s Time] [2021-12-06 22:08:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155749 states. [2021-12-06 22:08:48,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155749 to 141031. [2021-12-06 22:08:48,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141031 states, 96603 states have (on average 1.3313768723538606) internal successors, (128615), 98764 states have internal predecessors, (128615), 32897 states have call successors, (32897), 10529 states have call predecessors, (32897), 11530 states have return successors, (40721), 33727 states have call predecessors, (40721), 32881 states have call successors, (40721) [2021-12-06 22:08:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141031 states to 141031 states and 202233 transitions. [2021-12-06 22:08:49,591 INFO L78 Accepts]: Start accepts. Automaton has 141031 states and 202233 transitions. Word has length 122 [2021-12-06 22:08:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:08:49,592 INFO L470 AbstractCegarLoop]: Abstraction has 141031 states and 202233 transitions. [2021-12-06 22:08:49,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 7 states have internal predecessors, (143), 5 states have call successors, (37), 5 states have call predecessors, (37), 2 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-06 22:08:49,592 INFO L276 IsEmpty]: Start isEmpty. Operand 141031 states and 202233 transitions. [2021-12-06 22:08:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-06 22:08:49,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:08:49,599 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:08:49,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:08:49,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:08:49,800 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:08:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:08:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1431180247, now seen corresponding path program 2 times [2021-12-06 22:08:49,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:08:49,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387920295] [2021-12-06 22:08:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:08:49,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:08:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:08:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:08:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:08:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:08:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:08:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:08:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:08:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:08:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:08:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:08:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:08:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:08:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:08:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:08:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:08:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:08:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:08:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:08:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 22:08:50,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:08:50,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387920295] [2021-12-06 22:08:50,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387920295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:08:50,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:08:50,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:08:50,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354230352] [2021-12-06 22:08:50,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:08:50,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:08:50,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:08:50,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:08:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:08:50,373 INFO L87 Difference]: Start difference. First operand 141031 states and 202233 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:08:54,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:08:56,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:09:14,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:09:18,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:09:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:09:27,379 INFO L93 Difference]: Finished difference Result 296794 states and 431842 transitions. [2021-12-06 22:09:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:09:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2021-12-06 22:09:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:09:27,961 INFO L225 Difference]: With dead ends: 296794 [2021-12-06 22:09:27,961 INFO L226 Difference]: Without dead ends: 155769 [2021-12-06 22:09:28,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:09:28,293 INFO L933 BasicCegarLoop]: 4133 mSDtfsCounter, 5152 mSDsluCounter, 7869 mSDsCounter, 0 mSdLazyCounter, 8496 mSolverCounterSat, 3912 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 12002 SdHoareTripleChecker+Invalid, 12411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3912 IncrementalHoareTripleChecker+Valid, 8496 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:09:28,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 12002 Invalid, 12411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3912 Valid, 8496 Invalid, 3 Unknown, 0 Unchecked, 27.5s Time] [2021-12-06 22:09:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155769 states. [2021-12-06 22:09:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155769 to 141031. [2021-12-06 22:09:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141031 states, 96603 states have (on average 1.3312526526091322) internal successors, (128603), 98764 states have internal predecessors, (128603), 32897 states have call successors, (32897), 10529 states have call predecessors, (32897), 11530 states have return successors, (40721), 33727 states have call predecessors, (40721), 32881 states have call successors, (40721) [2021-12-06 22:09:37,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141031 states to 141031 states and 202221 transitions. [2021-12-06 22:09:37,780 INFO L78 Accepts]: Start accepts. Automaton has 141031 states and 202221 transitions. Word has length 140 [2021-12-06 22:09:37,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:09:37,781 INFO L470 AbstractCegarLoop]: Abstraction has 141031 states and 202221 transitions. [2021-12-06 22:09:37,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:09:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 141031 states and 202221 transitions. [2021-12-06 22:09:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 22:09:37,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:09:37,786 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:09:37,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:09:37,787 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:09:37,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:09:37,787 INFO L85 PathProgramCache]: Analyzing trace with hash -983486875, now seen corresponding path program 1 times [2021-12-06 22:09:37,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:09:37,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905641581] [2021-12-06 22:09:37,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:09:37,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:09:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:37,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:09:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:37,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:09:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:09:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:09:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:09:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:09:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:09:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:09:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 22:09:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:09:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:09:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:09:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:09:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:09:38,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:09:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:09:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 22:09:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:09:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 22:09:38,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:09:38,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905641581] [2021-12-06 22:09:38,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905641581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:09:38,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:09:38,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:09:38,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382949367] [2021-12-06 22:09:38,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:09:38,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:09:38,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:09:38,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:09:38,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:09:38,217 INFO L87 Difference]: Start difference. First operand 141031 states and 202221 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:09:54,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:10:02,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:10:21,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:21,041 INFO L93 Difference]: Finished difference Result 259844 states and 376080 transitions. [2021-12-06 22:10:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:10:21,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 143 [2021-12-06 22:10:21,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:21,530 INFO L225 Difference]: With dead ends: 259844 [2021-12-06 22:10:21,531 INFO L226 Difference]: Without dead ends: 142995 [2021-12-06 22:10:21,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:10:21,809 INFO L933 BasicCegarLoop]: 5366 mSDtfsCounter, 6243 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 10183 mSolverCounterSat, 4382 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6773 SdHoareTripleChecker+Valid, 9692 SdHoareTripleChecker+Invalid, 14566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4382 IncrementalHoareTripleChecker+Valid, 10183 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:21,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6773 Valid, 9692 Invalid, 14566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4382 Valid, 10183 Invalid, 1 Unknown, 0 Unchecked, 33.4s Time] [2021-12-06 22:10:21,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142995 states. [2021-12-06 22:10:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142995 to 129131. [2021-12-06 22:10:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129131 states, 88761 states have (on average 1.3344148894221561) internal successors, (118444), 90740 states have internal predecessors, (118444), 29853 states have call successors, (29853), 9758 states have call predecessors, (29853), 10516 states have return successors, (33700), 30447 states have call predecessors, (33700), 29809 states have call successors, (33700) [2021-12-06 22:10:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129131 states to 129131 states and 181997 transitions. [2021-12-06 22:10:30,199 INFO L78 Accepts]: Start accepts. Automaton has 129131 states and 181997 transitions. Word has length 143 [2021-12-06 22:10:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:30,200 INFO L470 AbstractCegarLoop]: Abstraction has 129131 states and 181997 transitions. [2021-12-06 22:10:30,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 22:10:30,200 INFO L276 IsEmpty]: Start isEmpty. Operand 129131 states and 181997 transitions. [2021-12-06 22:10:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-06 22:10:30,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:30,219 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:30,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:10:30,219 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:10:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1431628358, now seen corresponding path program 1 times [2021-12-06 22:10:30,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:30,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029104994] [2021-12-06 22:10:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:30,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:10:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:10:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:10:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:10:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:10:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:10:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:10:30,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:10:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:10:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:10:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:10:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:10:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:10:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:10:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:10:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:10:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:10:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:10:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 22:10:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:10:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:10:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 22:10:30,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:30,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029104994] [2021-12-06 22:10:30,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029104994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:30,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:30,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:10:30,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234606613] [2021-12-06 22:10:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:30,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:10:30,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:10:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:10:30,609 INFO L87 Difference]: Start difference. First operand 129131 states and 181997 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-06 22:10:34,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:10:47,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:11:00,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:11:02,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:11:15,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:11:15,226 INFO L93 Difference]: Finished difference Result 304046 states and 458959 transitions. [2021-12-06 22:11:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:11:15,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 187 [2021-12-06 22:11:15,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:11:15,886 INFO L225 Difference]: With dead ends: 304046 [2021-12-06 22:11:15,887 INFO L226 Difference]: Without dead ends: 174921 [2021-12-06 22:11:16,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:11:16,231 INFO L933 BasicCegarLoop]: 3995 mSDtfsCounter, 7107 mSDsluCounter, 6907 mSDsCounter, 0 mSdLazyCounter, 9723 mSolverCounterSat, 4384 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7533 SdHoareTripleChecker+Valid, 10902 SdHoareTripleChecker+Invalid, 14111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4384 IncrementalHoareTripleChecker+Valid, 9723 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:11:16,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7533 Valid, 10902 Invalid, 14111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4384 Valid, 9723 Invalid, 4 Unknown, 0 Unchecked, 34.1s Time] [2021-12-06 22:11:16,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174921 states. [2021-12-06 22:11:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174921 to 137357. [2021-12-06 22:11:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137357 states, 94107 states have (on average 1.3291253573060453) internal successors, (125080), 96086 states have internal predecessors, (125080), 32103 states have call successors, (32103), 9758 states have call predecessors, (32103), 11146 states have return successors, (37492), 33447 states have call predecessors, (37492), 32059 states have call successors, (37492) [2021-12-06 22:11:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137357 states to 137357 states and 194675 transitions. [2021-12-06 22:11:25,859 INFO L78 Accepts]: Start accepts. Automaton has 137357 states and 194675 transitions. Word has length 187 [2021-12-06 22:11:25,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:11:25,859 INFO L470 AbstractCegarLoop]: Abstraction has 137357 states and 194675 transitions. [2021-12-06 22:11:25,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2021-12-06 22:11:25,860 INFO L276 IsEmpty]: Start isEmpty. Operand 137357 states and 194675 transitions. [2021-12-06 22:11:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:11:25,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:11:25,872 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:11:25,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:11:25,872 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:11:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:11:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash 426366454, now seen corresponding path program 1 times [2021-12-06 22:11:25,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:11:25,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096465299] [2021-12-06 22:11:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:25,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:11:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:11:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:11:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:11:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:11:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:11:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:11:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:11:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:11:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:11:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:11:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 22:11:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:11:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:11:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:11:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:11:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:11:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:11:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:11:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 22:11:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:11:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:11:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 22:11:26,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:11:26,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096465299] [2021-12-06 22:11:26,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096465299] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:11:26,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802449959] [2021-12-06 22:11:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:11:26,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:11:26,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:11:26,266 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:11:26,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:11:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:11:27,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 6778 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:11:27,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:11:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:11:27,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:11:27,602 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 22:11:27,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802449959] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:11:27,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:11:27,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2021-12-06 22:11:27,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300223695] [2021-12-06 22:11:27,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:11:27,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:11:27,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:11:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:11:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:11:27,604 INFO L87 Difference]: Start difference. First operand 137357 states and 194675 transitions. Second operand has 15 states, 15 states have (on average 15.4) internal successors, (231), 11 states have internal predecessors, (231), 8 states have call successors, (71), 6 states have call predecessors, (71), 2 states have return successors, (53), 8 states have call predecessors, (53), 8 states have call successors, (53) [2021-12-06 22:11:32,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:11:34,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:11:59,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:12:13,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:12:13,831 INFO L93 Difference]: Finished difference Result 312842 states and 472475 transitions. [2021-12-06 22:12:13,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:12:13,832 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 15.4) internal successors, (231), 11 states have internal predecessors, (231), 8 states have call successors, (71), 6 states have call predecessors, (71), 2 states have return successors, (53), 8 states have call predecessors, (53), 8 states have call successors, (53) Word has length 190 [2021-12-06 22:12:13,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:12:14,519 INFO L225 Difference]: With dead ends: 312842 [2021-12-06 22:12:14,519 INFO L226 Difference]: Without dead ends: 175491 [2021-12-06 22:12:14,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:12:14,966 INFO L933 BasicCegarLoop]: 4004 mSDtfsCounter, 7955 mSDsluCounter, 14777 mSDsCounter, 0 mSdLazyCounter, 16377 mSolverCounterSat, 5615 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8383 SdHoareTripleChecker+Valid, 18781 SdHoareTripleChecker+Invalid, 21995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5615 IncrementalHoareTripleChecker+Valid, 16377 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:12:14,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8383 Valid, 18781 Invalid, 21995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5615 Valid, 16377 Invalid, 3 Unknown, 0 Unchecked, 34.9s Time] [2021-12-06 22:12:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175491 states. [2021-12-06 22:12:24,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175491 to 137795. [2021-12-06 22:12:24,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137795 states, 94509 states have (on average 1.3291220941920876) internal successors, (125614), 96488 states have internal predecessors, (125614), 32139 states have call successors, (32139), 9758 states have call predecessors, (32139), 11146 states have return successors, (37528), 33483 states have call predecessors, (37528), 32095 states have call successors, (37528) [2021-12-06 22:12:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137795 states to 137795 states and 195281 transitions. [2021-12-06 22:12:24,887 INFO L78 Accepts]: Start accepts. Automaton has 137795 states and 195281 transitions. Word has length 190 [2021-12-06 22:12:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:12:24,887 INFO L470 AbstractCegarLoop]: Abstraction has 137795 states and 195281 transitions. [2021-12-06 22:12:24,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.4) internal successors, (231), 11 states have internal predecessors, (231), 8 states have call successors, (71), 6 states have call predecessors, (71), 2 states have return successors, (53), 8 states have call predecessors, (53), 8 states have call successors, (53) [2021-12-06 22:12:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 137795 states and 195281 transitions. [2021-12-06 22:12:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-06 22:12:24,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:12:24,901 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:12:24,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:12:25,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f57a2a31-db2b-4e99-a152-5d093fe0414e/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 22:12:25,103 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:12:25,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:12:25,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1640839363, now seen corresponding path program 1 times [2021-12-06 22:12:25,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:12:25,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086176466] [2021-12-06 22:12:25,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:12:25,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:12:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:12:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:12:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:12:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:12:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:12:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:12:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:12:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:12:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:12:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:12:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:12:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:12:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:12:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:12:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:12:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:12:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:12:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:12:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:12:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:12:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:12:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 22:12:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:12:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 22:12:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:12:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-12-06 22:12:25,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:12:25,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086176466] [2021-12-06 22:12:25,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086176466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:12:25,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:12:25,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:12:25,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795452355] [2021-12-06 22:12:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:12:25,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:12:25,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:12:25,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:12:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:12:25,701 INFO L87 Difference]: Start difference. First operand 137795 states and 195281 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (27), 7 states have call predecessors, (27), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:12:29,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:12:47,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:12:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:12:58,862 INFO L93 Difference]: Finished difference Result 175253 states and 266598 transitions. [2021-12-06 22:12:58,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:12:58,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (27), 7 states have call predecessors, (27), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 209 [2021-12-06 22:12:58,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:12:59,498 INFO L225 Difference]: With dead ends: 175253 [2021-12-06 22:12:59,498 INFO L226 Difference]: Without dead ends: 175250 [2021-12-06 22:12:59,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:12:59,572 INFO L933 BasicCegarLoop]: 4007 mSDtfsCounter, 7144 mSDsluCounter, 5529 mSDsCounter, 0 mSdLazyCounter, 9082 mSolverCounterSat, 4446 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7566 SdHoareTripleChecker+Valid, 9536 SdHoareTripleChecker+Invalid, 13530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4446 IncrementalHoareTripleChecker+Valid, 9082 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:12:59,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7566 Valid, 9536 Invalid, 13530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4446 Valid, 9082 Invalid, 2 Unknown, 0 Unchecked, 23.4s Time] [2021-12-06 22:12:59,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175250 states. [2021-12-06 22:13:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175250 to 137794. [2021-12-06 22:13:08,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137794 states, 94509 states have (on average 1.3284237480028358) internal successors, (125548), 96487 states have internal predecessors, (125548), 32138 states have call successors, (32138), 9758 states have call predecessors, (32138), 11146 states have return successors, (37528), 33483 states have call predecessors, (37528), 32095 states have call successors, (37528) [2021-12-06 22:13:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137794 states to 137794 states and 195214 transitions. [2021-12-06 22:13:09,235 INFO L78 Accepts]: Start accepts. Automaton has 137794 states and 195214 transitions. Word has length 209 [2021-12-06 22:13:09,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:09,235 INFO L470 AbstractCegarLoop]: Abstraction has 137794 states and 195214 transitions. [2021-12-06 22:13:09,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (27), 7 states have call predecessors, (27), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 22:13:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 137794 states and 195214 transitions. [2021-12-06 22:13:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-06 22:13:09,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:09,249 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:13:09,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:13:09,249 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1578113222, now seen corresponding path program 1 times [2021-12-06 22:13:09,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:09,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490679029] [2021-12-06 22:13:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:09,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:13:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:13:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:13:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:13:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:13:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:13:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:13:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:13:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:13:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:13:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:13:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:13:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:13:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:13:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:13:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:13:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:13:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:13:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:13:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:13:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 22:13:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 22:13:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:13:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 22:13:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-06 22:13:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-06 22:13:09,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:09,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490679029] [2021-12-06 22:13:09,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490679029] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:09,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:09,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:13:09,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346305757] [2021-12-06 22:13:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:09,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:13:09,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:13:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:13:09,683 INFO L87 Difference]: Start difference. First operand 137794 states and 195214 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:13:12,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:13:22,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:13:24,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:13:36,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:13:38,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:13:47,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:13:47,333 INFO L93 Difference]: Finished difference Result 293388 states and 423355 transitions. [2021-12-06 22:13:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:13:47,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 245 [2021-12-06 22:13:47,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:13:47,899 INFO L225 Difference]: With dead ends: 293388 [2021-12-06 22:13:47,899 INFO L226 Difference]: Without dead ends: 155600 [2021-12-06 22:13:48,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:13:48,196 INFO L933 BasicCegarLoop]: 4062 mSDtfsCounter, 7862 mSDsluCounter, 5230 mSDsCounter, 0 mSdLazyCounter, 10410 mSolverCounterSat, 5835 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8588 SdHoareTripleChecker+Valid, 9292 SdHoareTripleChecker+Invalid, 16249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5835 IncrementalHoareTripleChecker+Valid, 10410 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:13:48,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8588 Valid, 9292 Invalid, 16249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5835 Valid, 10410 Invalid, 4 Unknown, 0 Unchecked, 27.6s Time] [2021-12-06 22:13:48,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155600 states. [2021-12-06 22:13:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155600 to 137806. [2021-12-06 22:13:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137806 states, 94521 states have (on average 1.3283820526655452) internal successors, (125560), 96499 states have internal predecessors, (125560), 32138 states have call successors, (32138), 9758 states have call predecessors, (32138), 11146 states have return successors, (37528), 33483 states have call predecessors, (37528), 32095 states have call successors, (37528) [2021-12-06 22:13:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137806 states to 137806 states and 195226 transitions. [2021-12-06 22:13:58,168 INFO L78 Accepts]: Start accepts. Automaton has 137806 states and 195226 transitions. Word has length 245 [2021-12-06 22:13:58,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:13:58,169 INFO L470 AbstractCegarLoop]: Abstraction has 137806 states and 195226 transitions. [2021-12-06 22:13:58,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:13:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 137806 states and 195226 transitions. [2021-12-06 22:13:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-06 22:13:58,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:13:58,185 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:13:58,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:13:58,186 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:13:58,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:13:58,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1126253300, now seen corresponding path program 1 times [2021-12-06 22:13:58,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:13:58,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861623829] [2021-12-06 22:13:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:13:58,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:13:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:13:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:13:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:13:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:13:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:13:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:13:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:13:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:13:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:13:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:13:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:13:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:13:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:13:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:13:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:13:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:13:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:13:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:13:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:13:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:13:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 22:13:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:13:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 22:13:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-06 22:13:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 22:13:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 22:13:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:13:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-06 22:13:58,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:13:58,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861623829] [2021-12-06 22:13:58,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861623829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:13:58,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:13:58,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:13:58,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546803210] [2021-12-06 22:13:58,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:13:58,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:13:58,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:13:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:13:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:13:58,564 INFO L87 Difference]: Start difference. First operand 137806 states and 195226 transitions. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:14:01,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:14:11,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:14:16,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:14:29,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:14:29,056 INFO L93 Difference]: Finished difference Result 249954 states and 358148 transitions. [2021-12-06 22:14:29,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:14:29,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 242 [2021-12-06 22:14:29,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:14:29,451 INFO L225 Difference]: With dead ends: 249954 [2021-12-06 22:14:29,451 INFO L226 Difference]: Without dead ends: 112154 [2021-12-06 22:14:29,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:14:29,747 INFO L933 BasicCegarLoop]: 3788 mSDtfsCounter, 9226 mSDsluCounter, 3015 mSDsCounter, 0 mSdLazyCounter, 7616 mSolverCounterSat, 6355 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9281 SdHoareTripleChecker+Valid, 6803 SdHoareTripleChecker+Invalid, 13973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6355 IncrementalHoareTripleChecker+Valid, 7616 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:14:29,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9281 Valid, 6803 Invalid, 13973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6355 Valid, 7616 Invalid, 2 Unknown, 0 Unchecked, 22.6s Time] [2021-12-06 22:14:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112154 states. [2021-12-06 22:14:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112154 to 101571. [2021-12-06 22:14:36,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101571 states, 69441 states have (on average 1.3233392376261863) internal successors, (91894), 70957 states have internal predecessors, (91894), 23635 states have call successors, (23635), 7401 states have call predecessors, (23635), 8494 states have return successors, (27701), 24661 states have call predecessors, (27701), 23600 states have call successors, (27701) [2021-12-06 22:14:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101571 states to 101571 states and 143230 transitions. [2021-12-06 22:14:36,988 INFO L78 Accepts]: Start accepts. Automaton has 101571 states and 143230 transitions. Word has length 242 [2021-12-06 22:14:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:14:36,988 INFO L470 AbstractCegarLoop]: Abstraction has 101571 states and 143230 transitions. [2021-12-06 22:14:36,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 22:14:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 101571 states and 143230 transitions. [2021-12-06 22:14:37,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-06 22:14:37,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:14:37,003 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:14:37,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:14:37,003 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:14:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:14:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1127507910, now seen corresponding path program 1 times [2021-12-06 22:14:37,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:14:37,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268085411] [2021-12-06 22:14:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:14:37,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:14:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:14:37,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:14:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:14:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:14:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:14:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:14:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:14:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:14:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:14:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:14:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 22:14:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:14:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:14:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:14:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:14:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:14:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:14:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:14:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:14:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:14:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 22:14:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:14:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 22:14:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:14:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 22:14:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-06 22:14:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:14:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-12-06 22:14:37,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:14:37,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268085411] [2021-12-06 22:14:37,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268085411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:14:37,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:14:37,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:14:37,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611731606] [2021-12-06 22:14:37,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:14:37,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:14:37,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:14:37,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:14:37,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:14:37,396 INFO L87 Difference]: Start difference. First operand 101571 states and 143230 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:14:40,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:14:50,541 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:14:55,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:15:08,748 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:15:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:14,299 INFO L93 Difference]: Finished difference Result 221239 states and 315876 transitions. [2021-12-06 22:15:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:15:14,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 245 [2021-12-06 22:15:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:14,723 INFO L225 Difference]: With dead ends: 221239 [2021-12-06 22:15:14,723 INFO L226 Difference]: Without dead ends: 119694 [2021-12-06 22:15:14,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:15:14,956 INFO L933 BasicCegarLoop]: 5905 mSDtfsCounter, 7592 mSDsluCounter, 3097 mSDsCounter, 0 mSdLazyCounter, 10046 mSolverCounterSat, 5708 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8244 SdHoareTripleChecker+Valid, 9002 SdHoareTripleChecker+Invalid, 15756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5708 IncrementalHoareTripleChecker+Valid, 10046 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:14,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8244 Valid, 9002 Invalid, 15756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5708 Valid, 10046 Invalid, 2 Unknown, 0 Unchecked, 28.4s Time] [2021-12-06 22:15:15,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119694 states. [2021-12-06 22:15:22,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119694 to 108505. [2021-12-06 22:15:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108505 states, 74269 states have (on average 1.3213992379054518) internal successors, (98139), 75896 states have internal predecessors, (98139), 25008 states have call successors, (25008), 8136 states have call predecessors, (25008), 9227 states have return successors, (29072), 26017 states have call predecessors, (29072), 24971 states have call successors, (29072) [2021-12-06 22:15:22,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108505 states to 108505 states and 152219 transitions. [2021-12-06 22:15:22,710 INFO L78 Accepts]: Start accepts. Automaton has 108505 states and 152219 transitions. Word has length 245 [2021-12-06 22:15:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:22,711 INFO L470 AbstractCegarLoop]: Abstraction has 108505 states and 152219 transitions. [2021-12-06 22:15:22,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (24), 7 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:15:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 108505 states and 152219 transitions. [2021-12-06 22:15:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-12-06 22:15:22,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:22,730 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:15:22,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:15:22,730 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1884242978, now seen corresponding path program 1 times [2021-12-06 22:15:22,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:22,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381052547] [2021-12-06 22:15:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:22,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:15:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:15:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:15:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:15:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:15:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:15:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:15:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:15:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:15:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:15:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:15:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:15:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:15:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:15:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:15:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 22:15:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:15:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:15:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 22:15:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:15:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 22:15:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 22:15:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 22:15:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 22:15:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 22:15:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:15:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-06 22:15:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-06 22:15:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 22:15:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 22:15:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-06 22:15:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-12-06 22:15:23,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:23,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381052547] [2021-12-06 22:15:23,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381052547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:23,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:23,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:15:23,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823840754] [2021-12-06 22:15:23,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:23,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:15:23,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:15:23,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:15:23,399 INFO L87 Difference]: Start difference. First operand 108505 states and 152219 transitions. Second operand has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 5 states have internal predecessors, (132), 4 states have call successors, (39), 8 states have call predecessors, (39), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 22:15:27,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:15:29,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:15:31,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:15:33,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:15:36,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:15:38,249 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:15:44,137 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:16:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:09,481 INFO L93 Difference]: Finished difference Result 229346 states and 333361 transitions. [2021-12-06 22:16:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:16:09,481 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 5 states have internal predecessors, (132), 4 states have call successors, (39), 8 states have call predecessors, (39), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 276 [2021-12-06 22:16:09,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:09,925 INFO L225 Difference]: With dead ends: 229346 [2021-12-06 22:16:09,926 INFO L226 Difference]: Without dead ends: 120867 [2021-12-06 22:16:10,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:16:10,346 INFO L933 BasicCegarLoop]: 4017 mSDtfsCounter, 4931 mSDsluCounter, 16144 mSDsCounter, 0 mSdLazyCounter, 14990 mSolverCounterSat, 3899 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5363 SdHoareTripleChecker+Valid, 20161 SdHoareTripleChecker+Invalid, 18896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3899 IncrementalHoareTripleChecker+Valid, 14990 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:10,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5363 Valid, 20161 Invalid, 18896 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3899 Valid, 14990 Invalid, 7 Unknown, 0 Unchecked, 37.3s Time] [2021-12-06 22:16:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120867 states. [2021-12-06 22:16:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120867 to 110189. [2021-12-06 22:16:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110189 states, 75359 states have (on average 1.3180774691808543) internal successors, (99329), 77036 states have internal predecessors, (99329), 25308 states have call successors, (25308), 8286 states have call predecessors, (25308), 9521 states have return successors, (29588), 26461 states have call predecessors, (29588), 25271 states have call successors, (29588) [2021-12-06 22:16:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110189 states to 110189 states and 154225 transitions. [2021-12-06 22:16:18,147 INFO L78 Accepts]: Start accepts. Automaton has 110189 states and 154225 transitions. Word has length 276 [2021-12-06 22:16:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:18,148 INFO L470 AbstractCegarLoop]: Abstraction has 110189 states and 154225 transitions. [2021-12-06 22:16:18,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.666666666666666) internal successors, (132), 5 states have internal predecessors, (132), 4 states have call successors, (39), 8 states have call predecessors, (39), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 22:16:18,148 INFO L276 IsEmpty]: Start isEmpty. Operand 110189 states and 154225 transitions. [2021-12-06 22:16:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-12-06 22:16:18,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:18,160 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:18,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:16:18,160 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:18,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1728891852, now seen corresponding path program 1 times [2021-12-06 22:16:18,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:18,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191375329] [2021-12-06 22:16:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:18,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:16:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:16:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:16:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:16:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:16:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:16:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:16:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:16:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:16:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:16:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:16:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:16:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:16:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:16:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:16:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 22:16:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 22:16:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 22:16:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 22:16:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 22:16:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 22:16:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:16:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 22:16:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 22:16:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-06 22:16:18,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:18,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191375329] [2021-12-06 22:16:18,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191375329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:18,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:18,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:16:18,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548074348] [2021-12-06 22:16:18,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:18,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:16:18,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:16:18,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:16:18,696 INFO L87 Difference]: Start difference. First operand 110189 states and 154225 transitions. Second operand has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (36), 8 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 22:16:22,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:16:28,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:16:30,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:16:46,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:16:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:54,975 INFO L93 Difference]: Finished difference Result 241005 states and 353489 transitions. [2021-12-06 22:16:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:16:54,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (36), 8 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 283 [2021-12-06 22:16:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:55,454 INFO L225 Difference]: With dead ends: 241005 [2021-12-06 22:16:55,454 INFO L226 Difference]: Without dead ends: 130842 [2021-12-06 22:16:55,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:16:55,736 INFO L933 BasicCegarLoop]: 3923 mSDtfsCounter, 9371 mSDsluCounter, 7220 mSDsCounter, 0 mSdLazyCounter, 9051 mSolverCounterSat, 8139 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9672 SdHoareTripleChecker+Valid, 11143 SdHoareTripleChecker+Invalid, 17191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8139 IncrementalHoareTripleChecker+Valid, 9051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:55,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9672 Valid, 11143 Invalid, 17191 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8139 Valid, 9051 Invalid, 1 Unknown, 0 Unchecked, 26.8s Time] [2021-12-06 22:16:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130842 states. [2021-12-06 22:17:03,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130842 to 104470. [2021-12-06 22:17:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104470 states, 71689 states have (on average 1.3231458103753715) internal successors, (94855), 73354 states have internal predecessors, (94855), 23919 states have call successors, (23919), 8286 states have call predecessors, (23919), 8861 states have return successors, (26825), 24340 states have call predecessors, (26825), 23882 states have call successors, (26825) [2021-12-06 22:17:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104470 states to 104470 states and 145599 transitions. [2021-12-06 22:17:03,858 INFO L78 Accepts]: Start accepts. Automaton has 104470 states and 145599 transitions. Word has length 283 [2021-12-06 22:17:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:03,858 INFO L470 AbstractCegarLoop]: Abstraction has 104470 states and 145599 transitions. [2021-12-06 22:17:03,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.666666666666668) internal successors, (159), 3 states have internal predecessors, (159), 2 states have call successors, (36), 8 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-06 22:17:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 104470 states and 145599 transitions. [2021-12-06 22:17:03,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-12-06 22:17:03,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:03,869 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:17:03,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 22:17:03,870 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:03,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:03,870 INFO L85 PathProgramCache]: Analyzing trace with hash 672160650, now seen corresponding path program 1 times [2021-12-06 22:17:03,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:03,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772029264] [2021-12-06 22:17:03,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:03,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 22:17:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 22:17:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 22:17:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:17:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:17:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:17:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:17:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:17:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 22:17:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:17:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:17:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:17:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 22:17:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:17:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:17:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:17:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 22:17:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 22:17:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 22:17:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 22:17:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 22:17:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 22:17:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:17:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 22:17:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:04,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 22:17:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-12-06 22:17:04,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:04,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772029264] [2021-12-06 22:17:04,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772029264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:04,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:04,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:17:04,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928280051] [2021-12-06 22:17:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:04,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:17:04,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:17:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:17:04,471 INFO L87 Difference]: Start difference. First operand 104470 states and 145599 transitions. Second operand has 10 states, 10 states have (on average 15.9) internal successors, (159), 4 states have internal predecessors, (159), 2 states have call successors, (36), 8 states have call predecessors, (36), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2021-12-06 22:17:09,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:17:11,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:17:22,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []