./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-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL --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 f665efa4a665554cf7543e013a29ff4c6ab086907b4fe7628b89c7f514f54a81 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:37:36,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:37:36,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:37:36,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:37:36,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:37:36,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:37:36,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:37:36,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:37:36,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:37:36,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:37:36,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:37:37,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:37:37,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:37:37,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:37:37,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:37:37,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:37:37,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:37:37,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:37:37,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:37:37,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:37:37,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:37:37,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:37:37,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:37:37,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:37:37,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:37:37,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:37:37,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:37:37,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:37:37,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:37:37,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:37:37,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:37:37,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:37:37,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:37:37,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:37:37,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:37:37,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:37:37,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:37:37,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:37:37,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:37:37,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:37:37,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:37:37,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-19 04:37:37,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:37:37,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:37:37,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:37:37,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:37:37,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:37:37,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:37:37,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:37:37,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:37:37,138 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:37:37,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:37:37,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:37:37,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:37:37,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:37:37,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:37:37,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:37:37,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:37:37,141 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:37:37,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:37:37,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:37:37,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:37:37,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:37:37,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:37:37,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:37:37,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:37:37,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:37:37,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:37:37,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:37:37,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:37:37,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:37:37,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:37:37,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:37:37,146 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_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f665efa4a665554cf7543e013a29ff4c6ab086907b4fe7628b89c7f514f54a81 [2021-11-19 04:37:37,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:37:37,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:37:37,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:37:37,603 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:37:37,604 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:37:37,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2021-11-19 04:37:37,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/data/94f66586a/a891828a1d6a40a98d895ef22db124f6/FLAGdd5a6df22 [2021-11-19 04:37:38,963 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:37:38,964 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2021-11-19 04:37:39,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/data/94f66586a/a891828a1d6a40a98d895ef22db124f6/FLAGdd5a6df22 [2021-11-19 04:37:39,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/data/94f66586a/a891828a1d6a40a98d895ef22db124f6 [2021-11-19 04:37:39,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:37:39,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:37:39,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:37:39,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:37:39,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:37:39,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:37:39" (1/1) ... [2021-11-19 04:37:39,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54dfd36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:39, skipping insertion in model container [2021-11-19 04:37:39,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:37:39" (1/1) ... [2021-11-19 04:37:39,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:37:39,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:37:41,865 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_0bc14c83-18a2-4316-8c24-882cd0f76f0e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i[298813,298826] [2021-11-19 04:37:41,935 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:37:41,971 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:37:42,550 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_0bc14c83-18a2-4316-8c24-882cd0f76f0e/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i[298813,298826] [2021-11-19 04:37:42,566 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:37:42,740 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:37:42,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42 WrapperNode [2021-11-19 04:37:42,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:37:42,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:37:42,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:37:42,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:37:42,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:42,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,146 INFO L137 Inliner]: procedures = 237, calls = 2052, calls flagged for inlining = 107, calls inlined = 104, statements flattened = 4574 [2021-11-19 04:37:43,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:37:43,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:37:43,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:37:43,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:37:43,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:37:43,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:37:43,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:37:43,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:37:43,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (1/1) ... [2021-11-19 04:37:43,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:37:43,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:37:43,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:37:43,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:37:43,575 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2021-11-19 04:37:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2021-11-19 04:37:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_ioctl [2021-11-19 04:37:43,576 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_ioctl [2021-11-19 04:37:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 04:37:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 04:37:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 04:37:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 04:37:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2021-11-19 04:37:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2021-11-19 04:37:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 04:37:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 04:37:43,578 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2021-11-19 04:37:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2021-11-19 04:37:43,578 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2021-11-19 04:37:43,578 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2021-11-19 04:37:43,579 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-19 04:37:43,579 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-19 04:37:43,579 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-19 04:37:43,579 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-19 04:37:43,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-19 04:37:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-19 04:37:43,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 04:37:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 04:37:43,580 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-19 04:37:43,580 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-19 04:37:43,581 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2021-11-19 04:37:43,581 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2021-11-19 04:37:43,581 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-19 04:37:43,581 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-19 04:37:43,581 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2021-11-19 04:37:43,582 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2021-11-19 04:37:43,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-19 04:37:43,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-19 04:37:43,582 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2021-11-19 04:37:43,582 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2021-11-19 04:37:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2021-11-19 04:37:43,583 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2021-11-19 04:37:43,583 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 04:37:43,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 04:37:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-19 04:37:43,584 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-19 04:37:43,584 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2021-11-19 04:37:43,584 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2021-11-19 04:37:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2021-11-19 04:37:43,585 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2021-11-19 04:37:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2021-11-19 04:37:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2021-11-19 04:37:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-19 04:37:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-19 04:37:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:37:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:37:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2021-11-19 04:37:43,587 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2021-11-19 04:37:43,587 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2021-11-19 04:37:43,588 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2021-11-19 04:37:43,588 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-19 04:37:43,589 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-19 04:37:43,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-19 04:37:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-19 04:37:43,590 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2021-11-19 04:37:43,590 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2021-11-19 04:37:43,591 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-19 04:37:43,591 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-19 04:37:43,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:37:43,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 04:37:43,591 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2021-11-19 04:37:43,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2021-11-19 04:37:43,592 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2021-11-19 04:37:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2021-11-19 04:37:43,593 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-19 04:37:43,593 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-19 04:37:43,594 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-19 04:37:43,594 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-19 04:37:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2021-11-19 04:37:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2021-11-19 04:37:43,595 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-19 04:37:43,595 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-19 04:37:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-19 04:37:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-19 04:37:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-19 04:37:43,596 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-19 04:37:43,596 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2021-11-19 04:37:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2021-11-19 04:37:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2021-11-19 04:37:43,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2021-11-19 04:37:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-19 04:37:43,597 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2021-11-19 04:37:43,598 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2021-11-19 04:37:43,598 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2021-11-19 04:37:43,599 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2021-11-19 04:37:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-19 04:37:43,599 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2021-11-19 04:37:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2021-11-19 04:37:43,600 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-19 04:37:43,600 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-19 04:37:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2021-11-19 04:37:43,601 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2021-11-19 04:37:43,601 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-19 04:37:43,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-19 04:37:43,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 04:37:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-19 04:37:43,604 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-19 04:37:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 04:37:43,604 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 04:37:43,604 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2021-11-19 04:37:43,605 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2021-11-19 04:37:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-19 04:37:43,605 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-19 04:37:43,605 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-19 04:37:43,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-19 04:37:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2021-11-19 04:37:43,606 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2021-11-19 04:37:43,606 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-19 04:37:43,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-19 04:37:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 04:37:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-19 04:37:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-19 04:37:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-19 04:37:43,612 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-19 04:37:43,612 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2021-11-19 04:37:43,612 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2021-11-19 04:37:43,613 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-19 04:37:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-19 04:37:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 04:37:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 04:37:43,616 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2021-11-19 04:37:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2021-11-19 04:37:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2021-11-19 04:37:43,623 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2021-11-19 04:37:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-19 04:37:43,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-19 04:37:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2021-11-19 04:37:43,624 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2021-11-19 04:37:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:37:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2021-11-19 04:37:43,715 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2021-11-19 04:37:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-19 04:37:43,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-19 04:37:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:37:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-19 04:37:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-19 04:37:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:37:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-19 04:37:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-19 04:37:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-19 04:37:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-19 04:37:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-19 04:37:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2021-11-19 04:37:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2021-11-19 04:37:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2021-11-19 04:37:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2021-11-19 04:37:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2021-11-19 04:37:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2021-11-19 04:37:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2021-11-19 04:37:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2021-11-19 04:37:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2021-11-19 04:37:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2021-11-19 04:37:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2021-11-19 04:37:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2021-11-19 04:37:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2021-11-19 04:37:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2021-11-19 04:37:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-19 04:37:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-19 04:37:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2021-11-19 04:37:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2021-11-19 04:37:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-19 04:37:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-19 04:37:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-19 04:37:43,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-19 04:37:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:37:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-19 04:37:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-19 04:37:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2021-11-19 04:37:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2021-11-19 04:37:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2021-11-19 04:37:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2021-11-19 04:37:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:37:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:37:44,622 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:37:44,630 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:37:45,123 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 04:37:54,019 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:37:54,042 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:37:54,043 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 04:37:54,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:37:54 BoogieIcfgContainer [2021-11-19 04:37:54,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:37:54,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:37:54,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:37:54,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:37:54,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:37:39" (1/3) ... [2021-11-19 04:37:54,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f150f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:37:54, skipping insertion in model container [2021-11-19 04:37:54,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:37:42" (2/3) ... [2021-11-19 04:37:54,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f150f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:37:54, skipping insertion in model container [2021-11-19 04:37:54,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:37:54" (3/3) ... [2021-11-19 04:37:54,059 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2021-11-19 04:37:54,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:37:54,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:37:54,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:37:54,145 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:37:54,146 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:37:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 1842 states, 1142 states have (on average 1.3126094570928195) internal successors, (1499), 1173 states have internal predecessors, (1499), 618 states have call successors, (618), 81 states have call predecessors, (618), 80 states have return successors, (611), 600 states have call predecessors, (611), 611 states have call successors, (611) [2021-11-19 04:37:54,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 04:37:54,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:37:54,268 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-19 04:37:54,269 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:37:54,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:37:54,276 INFO L85 PathProgramCache]: Analyzing trace with hash -299152905, now seen corresponding path program 1 times [2021-11-19 04:37:54,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:37:54,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085052094] [2021-11-19 04:37:54,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:37:54,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:37:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:37:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:37:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:37:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:37:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:37:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:37:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:37:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:37:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:37:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:37:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:37:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:37:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 04:37:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-19 04:37:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-19 04:37:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-19 04:37:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-19 04:37:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-19 04:37:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-19 04:37:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:37:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:37:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:37:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:37:55,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:37:55,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085052094] [2021-11-19 04:37:55,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085052094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:37:55,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:37:55,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:37:55,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235839987] [2021-11-19 04:37:55,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:37:55,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:37:55,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:37:55,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:37:55,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:37:55,876 INFO L87 Difference]: Start difference. First operand has 1842 states, 1142 states have (on average 1.3126094570928195) internal successors, (1499), 1173 states have internal predecessors, (1499), 618 states have call successors, (618), 81 states have call predecessors, (618), 80 states have return successors, (611), 600 states have call predecessors, (611), 611 states have call successors, (611) Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 04:37:57,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:37:59,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:01,573 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:06,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:07,955 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:09,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:11,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:21,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:38:21,751 INFO L93 Difference]: Finished difference Result 3738 states and 5584 transitions. [2021-11-19 04:38:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:38:21,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 195 [2021-11-19 04:38:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:38:21,842 INFO L225 Difference]: With dead ends: 3738 [2021-11-19 04:38:21,843 INFO L226 Difference]: Without dead ends: 1883 [2021-11-19 04:38:21,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:38:21,873 INFO L933 BasicCegarLoop]: 2268 mSDtfsCounter, 1699 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 3875 mSolverCounterSat, 2337 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 6214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2337 IncrementalHoareTripleChecker+Valid, 3875 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:38:21,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1970 Valid, 4454 Invalid, 6214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2337 Valid, 3875 Invalid, 2 Unknown, 0 Unchecked, 25.3s Time] [2021-11-19 04:38:21,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-11-19 04:38:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1824. [2021-11-19 04:38:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1133 states have (on average 1.3053839364518975) internal successors, (1479), 1155 states have internal predecessors, (1479), 611 states have call successors, (611), 80 states have call predecessors, (611), 79 states have return successors, (610), 599 states have call predecessors, (610), 610 states have call successors, (610) [2021-11-19 04:38:22,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2700 transitions. [2021-11-19 04:38:22,186 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2700 transitions. Word has length 195 [2021-11-19 04:38:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:38:22,187 INFO L470 AbstractCegarLoop]: Abstraction has 1824 states and 2700 transitions. [2021-11-19 04:38:22,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 04:38:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2700 transitions. [2021-11-19 04:38:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-19 04:38:22,204 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:38:22,204 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-19 04:38:22,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:38:22,205 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:38:22,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:38:22,206 INFO L85 PathProgramCache]: Analyzing trace with hash 475855630, now seen corresponding path program 1 times [2021-11-19 04:38:22,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:38:22,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458212337] [2021-11-19 04:38:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:22,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:38:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:38:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:38:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:38:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:38:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:38:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:38:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:38:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-19 04:38:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-19 04:38:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-19 04:38:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-19 04:38:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-19 04:38:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-19 04:38:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-11-19 04:38:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:38:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:38:22,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:38:22,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458212337] [2021-11-19 04:38:22,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458212337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:38:22,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:38:22,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 04:38:22,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374447437] [2021-11-19 04:38:22,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:38:22,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:38:22,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:38:22,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:38:22,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:38:22,917 INFO L87 Difference]: Start difference. First operand 1824 states and 2700 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 04:38:24,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:26,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:32,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:33,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:36,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:46,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:38:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:38:54,022 INFO L93 Difference]: Finished difference Result 5549 states and 8267 transitions. [2021-11-19 04:38:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 04:38:54,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 192 [2021-11-19 04:38:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:38:54,064 INFO L225 Difference]: With dead ends: 5549 [2021-11-19 04:38:54,064 INFO L226 Difference]: Without dead ends: 3747 [2021-11-19 04:38:54,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-19 04:38:54,088 INFO L933 BasicCegarLoop]: 2476 mSDtfsCounter, 5926 mSDsluCounter, 5870 mSDsCounter, 0 mSdLazyCounter, 7634 mSolverCounterSat, 7265 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6401 SdHoareTripleChecker+Valid, 8346 SdHoareTripleChecker+Invalid, 14901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7265 IncrementalHoareTripleChecker+Valid, 7634 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:38:54,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6401 Valid, 8346 Invalid, 14901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7265 Valid, 7634 Invalid, 2 Unknown, 0 Unchecked, 30.2s Time] [2021-11-19 04:38:54,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2021-11-19 04:38:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3626. [2021-11-19 04:38:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 2250 states have (on average 1.304888888888889) internal successors, (2936), 2301 states have internal predecessors, (2936), 1214 states have call successors, (1214), 159 states have call predecessors, (1214), 161 states have return successors, (1228), 1187 states have call predecessors, (1228), 1213 states have call successors, (1228) [2021-11-19 04:38:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 5378 transitions. [2021-11-19 04:38:54,461 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 5378 transitions. Word has length 192 [2021-11-19 04:38:54,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:38:54,462 INFO L470 AbstractCegarLoop]: Abstraction has 3626 states and 5378 transitions. [2021-11-19 04:38:54,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 04:38:54,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 5378 transitions. [2021-11-19 04:38:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 04:38:54,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:38:54,478 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-19 04:38:54,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:38:54,478 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:38:54,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:38:54,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1754365613, now seen corresponding path program 1 times [2021-11-19 04:38:54,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:38:54,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173824758] [2021-11-19 04:38:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:38:54,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:38:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:38:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:38:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:38:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:38:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:38:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:38:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:38:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:38:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-19 04:38:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-19 04:38:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-19 04:38:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-19 04:38:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-19 04:38:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-19 04:38:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-19 04:38:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:38:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:38:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:38:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:38:54,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:38:54,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173824758] [2021-11-19 04:38:54,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173824758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:38:54,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:38:54,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 04:38:54,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517604518] [2021-11-19 04:38:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:38:54,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:38:54,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:38:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:38:54,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:38:54,983 INFO L87 Difference]: Start difference. First operand 3626 states and 5378 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 04:38:57,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:01,976 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:03,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:05,437 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:08,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:10,370 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:12,092 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:13,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:15,083 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:23,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:39:29,654 INFO L93 Difference]: Finished difference Result 11068 states and 16518 transitions. [2021-11-19 04:39:29,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 04:39:29,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 195 [2021-11-19 04:39:29,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:39:29,737 INFO L225 Difference]: With dead ends: 11068 [2021-11-19 04:39:29,737 INFO L226 Difference]: Without dead ends: 7464 [2021-11-19 04:39:29,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-19 04:39:29,767 INFO L933 BasicCegarLoop]: 2580 mSDtfsCounter, 5758 mSDsluCounter, 5993 mSDsCounter, 0 mSdLazyCounter, 7776 mSolverCounterSat, 7082 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6229 SdHoareTripleChecker+Valid, 8573 SdHoareTripleChecker+Invalid, 14860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7082 IncrementalHoareTripleChecker+Valid, 7776 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:39:29,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6229 Valid, 8573 Invalid, 14860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7082 Valid, 7776 Invalid, 2 Unknown, 0 Unchecked, 33.9s Time] [2021-11-19 04:39:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2021-11-19 04:39:30,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 7233. [2021-11-19 04:39:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 4490 states have (on average 1.3046770601336304) internal successors, (5858), 4592 states have internal predecessors, (5858), 2419 states have call successors, (2419), 317 states have call predecessors, (2419), 323 states have return successors, (2470), 2367 states have call predecessors, (2470), 2418 states have call successors, (2470) [2021-11-19 04:39:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 10747 transitions. [2021-11-19 04:39:30,443 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 10747 transitions. Word has length 195 [2021-11-19 04:39:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:39:30,444 INFO L470 AbstractCegarLoop]: Abstraction has 7233 states and 10747 transitions. [2021-11-19 04:39:30,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 04:39:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 10747 transitions. [2021-11-19 04:39:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 04:39:30,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:39:30,465 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-19 04:39:30,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:39:30,466 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:39:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:39:30,466 INFO L85 PathProgramCache]: Analyzing trace with hash 351077322, now seen corresponding path program 1 times [2021-11-19 04:39:30,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:39:30,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709767736] [2021-11-19 04:39:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:39:30,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:39:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:39:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:39:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:39:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:39:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:39:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:39:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:39:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:39:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:39:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:39:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:39:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:39:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-19 04:39:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-19 04:39:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 04:39:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-19 04:39:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:39:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:31,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-19 04:39:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-19 04:39:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:39:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:39:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:39:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:39:31,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:39:31,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709767736] [2021-11-19 04:39:31,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709767736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:39:31,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:39:31,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 04:39:31,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147233660] [2021-11-19 04:39:31,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:39:31,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:39:31,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:39:31,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:39:31,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:39:31,156 INFO L87 Difference]: Start difference. First operand 7233 states and 10747 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 04:39:36,586 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:38,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:41,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:43,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:45,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:47,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:39:57,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:40:03,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:40:03,723 INFO L93 Difference]: Finished difference Result 22111 states and 33046 transitions. [2021-11-19 04:40:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 04:40:03,723 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 193 [2021-11-19 04:40:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:40:03,864 INFO L225 Difference]: With dead ends: 22111 [2021-11-19 04:40:03,864 INFO L226 Difference]: Without dead ends: 14900 [2021-11-19 04:40:03,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-19 04:40:03,926 INFO L933 BasicCegarLoop]: 2484 mSDtfsCounter, 5915 mSDsluCounter, 5848 mSDsCounter, 0 mSdLazyCounter, 7677 mSolverCounterSat, 7234 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6388 SdHoareTripleChecker+Valid, 8332 SdHoareTripleChecker+Invalid, 14912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7234 IncrementalHoareTripleChecker+Valid, 7677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:40:03,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6388 Valid, 8332 Invalid, 14912 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7234 Valid, 7677 Invalid, 1 Unknown, 0 Unchecked, 31.6s Time] [2021-11-19 04:40:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14900 states. [2021-11-19 04:40:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14900 to 14447. [2021-11-19 04:40:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14447 states, 8970 states have (on average 1.3039018952062431) internal successors, (11696), 9173 states have internal predecessors, (11696), 4828 states have call successors, (4828), 634 states have call predecessors, (4828), 648 states have return successors, (4973), 4727 states have call predecessors, (4973), 4827 states have call successors, (4973) [2021-11-19 04:40:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14447 states to 14447 states and 21497 transitions. [2021-11-19 04:40:05,132 INFO L78 Accepts]: Start accepts. Automaton has 14447 states and 21497 transitions. Word has length 193 [2021-11-19 04:40:05,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:40:05,133 INFO L470 AbstractCegarLoop]: Abstraction has 14447 states and 21497 transitions. [2021-11-19 04:40:05,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 04:40:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 14447 states and 21497 transitions. [2021-11-19 04:40:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-19 04:40:05,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:40:05,151 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-19 04:40:05,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:40:05,152 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:40:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:40:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2098492561, now seen corresponding path program 1 times [2021-11-19 04:40:05,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:40:05,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60967485] [2021-11-19 04:40:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:05,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:40:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:40:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:40:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:40:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:40:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:40:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:40:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:40:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-19 04:40:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-19 04:40:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-19 04:40:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-19 04:40:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-19 04:40:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-11-19 04:40:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-19 04:40:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:40:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:05,801 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:40:05,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:40:05,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60967485] [2021-11-19 04:40:05,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60967485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:40:05,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:40:05,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 04:40:05,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209149502] [2021-11-19 04:40:05,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:40:05,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:40:05,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:40:05,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:40:05,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:40:05,804 INFO L87 Difference]: Start difference. First operand 14447 states and 21497 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 04:40:08,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:40:13,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:40:15,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:40:17,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:40:19,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:40:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:40:35,387 INFO L93 Difference]: Finished difference Result 43712 states and 65389 transitions. [2021-11-19 04:40:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 04:40:35,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 194 [2021-11-19 04:40:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:40:35,620 INFO L225 Difference]: With dead ends: 43712 [2021-11-19 04:40:35,620 INFO L226 Difference]: Without dead ends: 29287 [2021-11-19 04:40:35,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-19 04:40:35,711 INFO L933 BasicCegarLoop]: 2437 mSDtfsCounter, 5942 mSDsluCounter, 5799 mSDsCounter, 0 mSdLazyCounter, 7608 mSolverCounterSat, 7303 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6416 SdHoareTripleChecker+Valid, 8236 SdHoareTripleChecker+Invalid, 14913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7303 IncrementalHoareTripleChecker+Valid, 7608 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:40:35,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6416 Valid, 8236 Invalid, 14913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7303 Valid, 7608 Invalid, 2 Unknown, 0 Unchecked, 28.3s Time] [2021-11-19 04:40:35,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29287 states. [2021-11-19 04:40:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29287 to 28431. [2021-11-19 04:40:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28431 states, 17627 states have (on average 1.3018664548703693) internal successors, (22948), 18023 states have internal predecessors, (22948), 9519 states have call successors, (9519), 1254 states have call predecessors, (9519), 1284 states have return successors, (9890), 9324 states have call predecessors, (9890), 9518 states have call successors, (9890) [2021-11-19 04:40:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28431 states to 28431 states and 42357 transitions. [2021-11-19 04:40:38,290 INFO L78 Accepts]: Start accepts. Automaton has 28431 states and 42357 transitions. Word has length 194 [2021-11-19 04:40:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:40:38,293 INFO L470 AbstractCegarLoop]: Abstraction has 28431 states and 42357 transitions. [2021-11-19 04:40:38,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 04:40:38,293 INFO L276 IsEmpty]: Start isEmpty. Operand 28431 states and 42357 transitions. [2021-11-19 04:40:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-19 04:40:38,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:40:38,313 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-19 04:40:38,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:40:38,315 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:40:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:40:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash -93232871, now seen corresponding path program 1 times [2021-11-19 04:40:38,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:40:38,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485162460] [2021-11-19 04:40:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:38,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:40:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:40:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:40:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:40:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:38,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:40:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:40:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:40:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:40:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:38,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-19 04:40:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-19 04:40:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-19 04:40:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-11-19 04:40:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-19 04:40:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-19 04:40:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-11-19 04:40:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-19 04:40:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:40:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-19 04:40:39,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:40:39,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485162460] [2021-11-19 04:40:39,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485162460] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:40:39,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709102491] [2021-11-19 04:40:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:39,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:39,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:40:39,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:40:39,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:40:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:40,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:40:40,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:40:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:40:40,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:40:40,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709102491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:40:40,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:40:40,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-19 04:40:40,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364961293] [2021-11-19 04:40:40,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:40:40,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:40:40,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:40:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:40:40,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-19 04:40:40,741 INFO L87 Difference]: Start difference. First operand 28431 states and 42357 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:40:43,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:40:43,879 INFO L93 Difference]: Finished difference Result 71003 states and 105825 transitions. [2021-11-19 04:40:43,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:40:43,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 205 [2021-11-19 04:40:43,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:40:44,258 INFO L225 Difference]: With dead ends: 71003 [2021-11-19 04:40:44,258 INFO L226 Difference]: Without dead ends: 42594 [2021-11-19 04:40:44,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-11-19 04:40:44,468 INFO L933 BasicCegarLoop]: 4035 mSDtfsCounter, 2725 mSDsluCounter, 18808 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 22843 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:40:44,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2729 Valid, 22843 Invalid, 75 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:40:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42594 states. [2021-11-19 04:40:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42594 to 42445. [2021-11-19 04:40:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42445 states, 26315 states have (on average 1.3020710621318639) internal successors, (34264), 26915 states have internal predecessors, (34264), 14206 states have call successors, (14206), 1870 states have call predecessors, (14206), 1923 states have return successors, (14853), 13913 states have call predecessors, (14853), 14205 states have call successors, (14853) [2021-11-19 04:40:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42445 states to 42445 states and 63323 transitions. [2021-11-19 04:40:48,105 INFO L78 Accepts]: Start accepts. Automaton has 42445 states and 63323 transitions. Word has length 205 [2021-11-19 04:40:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:40:48,106 INFO L470 AbstractCegarLoop]: Abstraction has 42445 states and 63323 transitions. [2021-11-19 04:40:48,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:40:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 42445 states and 63323 transitions. [2021-11-19 04:40:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-19 04:40:48,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:40:48,135 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-19 04:40:48,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:40:48,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:48,351 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:40:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:40:48,352 INFO L85 PathProgramCache]: Analyzing trace with hash 359624226, now seen corresponding path program 1 times [2021-11-19 04:40:48,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:40:48,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006261928] [2021-11-19 04:40:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:48,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:40:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:40:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:40:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:40:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:40:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:40:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:40:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:40:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-19 04:40:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-19 04:40:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-19 04:40:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-19 04:40:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-19 04:40:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-19 04:40:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-11-19 04:40:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-19 04:40:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:40:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:40:49,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:40:49,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006261928] [2021-11-19 04:40:49,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006261928] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:40:49,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910455263] [2021-11-19 04:40:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:49,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:49,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:40:49,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:40:49,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:40:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:50,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:40:50,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:40:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:40:50,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:40:50,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910455263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:40:50,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:40:50,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-19 04:40:50,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331706667] [2021-11-19 04:40:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:40:50,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:40:50,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:40:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:40:50,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:40:50,727 INFO L87 Difference]: Start difference. First operand 42445 states and 63323 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:40:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:40:53,411 INFO L93 Difference]: Finished difference Result 99084 states and 147803 transitions. [2021-11-19 04:40:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:40:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 206 [2021-11-19 04:40:53,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:40:53,853 INFO L225 Difference]: With dead ends: 99084 [2021-11-19 04:40:53,853 INFO L226 Difference]: Without dead ends: 56661 [2021-11-19 04:40:54,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-11-19 04:40:54,105 INFO L933 BasicCegarLoop]: 4130 mSDtfsCounter, 2725 mSDsluCounter, 19176 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 23306 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:40:54,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2729 Valid, 23306 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:40:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56661 states. [2021-11-19 04:40:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56661 to 56491. [2021-11-19 04:40:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56491 states, 35023 states have (on average 1.302001541843931) internal successors, (45600), 35843 states have internal predecessors, (45600), 18893 states have call successors, (18893), 2486 states have call predecessors, (18893), 2574 states have return successors, (19828), 18498 states have call predecessors, (19828), 18892 states have call successors, (19828) [2021-11-19 04:40:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56491 states to 56491 states and 84321 transitions. [2021-11-19 04:40:58,498 INFO L78 Accepts]: Start accepts. Automaton has 56491 states and 84321 transitions. Word has length 206 [2021-11-19 04:40:58,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:40:58,499 INFO L470 AbstractCegarLoop]: Abstraction has 56491 states and 84321 transitions. [2021-11-19 04:40:58,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:40:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 56491 states and 84321 transitions. [2021-11-19 04:40:58,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-19 04:40:58,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:40:58,549 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-19 04:40:58,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:40:58,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-19 04:40:58,775 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:40:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:40:58,776 INFO L85 PathProgramCache]: Analyzing trace with hash -593052416, now seen corresponding path program 1 times [2021-11-19 04:40:58,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:40:58,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150094965] [2021-11-19 04:40:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:58,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:40:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:40:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:40:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:40:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:40:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:40:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:40:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:40:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:40:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-19 04:40:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-19 04:40:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-19 04:40:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-19 04:40:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-19 04:40:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-19 04:40:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-11-19 04:40:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-19 04:40:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:40:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:40:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:40:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:40:59,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:40:59,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150094965] [2021-11-19 04:40:59,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150094965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:40:59,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82988528] [2021-11-19 04:40:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:40:59,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:40:59,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:40:59,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:40:59,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:41:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:00,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:41:00,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:41:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:41:01,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:41:01,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82988528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:41:01,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:41:01,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-19 04:41:01,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27664850] [2021-11-19 04:41:01,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:41:01,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:41:01,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:41:01,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:41:01,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:41:01,151 INFO L87 Difference]: Start difference. First operand 56491 states and 84321 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:41:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:41:03,952 INFO L93 Difference]: Finished difference Result 127165 states and 189781 transitions. [2021-11-19 04:41:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:41:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 207 [2021-11-19 04:41:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:41:04,559 INFO L225 Difference]: With dead ends: 127165 [2021-11-19 04:41:04,560 INFO L226 Difference]: Without dead ends: 70696 [2021-11-19 04:41:04,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-11-19 04:41:04,887 INFO L933 BasicCegarLoop]: 4293 mSDtfsCounter, 2725 mSDsluCounter, 19828 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 24121 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:41:04,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2729 Valid, 24121 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:41:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70696 states. [2021-11-19 04:41:08,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70696 to 56513. [2021-11-19 04:41:08,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56513 states, 35039 states have (on average 1.301863637660892) internal successors, (45616), 35861 states have internal predecessors, (45616), 18893 states have call successors, (18893), 2486 states have call predecessors, (18893), 2580 states have return successors, (19837), 18502 states have call predecessors, (19837), 18892 states have call successors, (19837) [2021-11-19 04:41:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56513 states to 56513 states and 84346 transitions. [2021-11-19 04:41:09,197 INFO L78 Accepts]: Start accepts. Automaton has 56513 states and 84346 transitions. Word has length 207 [2021-11-19 04:41:09,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:41:09,198 INFO L470 AbstractCegarLoop]: Abstraction has 56513 states and 84346 transitions. [2021-11-19 04:41:09,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:41:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 56513 states and 84346 transitions. [2021-11-19 04:41:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-19 04:41:09,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:41:09,238 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2021-11-19 04:41:09,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:41:09,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:41:09,467 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:41:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:41:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2127365289, now seen corresponding path program 1 times [2021-11-19 04:41:09,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:41:09,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564310754] [2021-11-19 04:41:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:41:09,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:41:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:41:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:41:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:41:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:41:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:41:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:41:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:41:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-19 04:41:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-19 04:41:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-19 04:41:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-19 04:41:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-11-19 04:41:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-19 04:41:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-11-19 04:41:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:41:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:10,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:10,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:41:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:10,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:41:10,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:41:10,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564310754] [2021-11-19 04:41:10,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564310754] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:41:10,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144462341] [2021-11-19 04:41:10,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:41:10,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:41:10,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:41:10,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:41:10,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 04:41:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:10,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:41:10,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:41:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-11-19 04:41:11,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:41:11,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144462341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:41:11,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:41:11,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-19 04:41:11,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417701523] [2021-11-19 04:41:11,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:41:11,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:41:11,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:41:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:41:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:41:11,281 INFO L87 Difference]: Start difference. First operand 56513 states and 84346 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:41:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:41:13,989 INFO L93 Difference]: Finished difference Result 127195 states and 189814 transitions. [2021-11-19 04:41:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 04:41:13,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 208 [2021-11-19 04:41:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:41:14,634 INFO L225 Difference]: With dead ends: 127195 [2021-11-19 04:41:14,634 INFO L226 Difference]: Without dead ends: 70704 [2021-11-19 04:41:14,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-11-19 04:41:14,831 INFO L933 BasicCegarLoop]: 4273 mSDtfsCounter, 2725 mSDsluCounter, 19748 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 24021 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:41:14,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2729 Valid, 24021 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:41:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70704 states. [2021-11-19 04:41:18,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70704 to 56526. [2021-11-19 04:41:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56526 states, 35049 states have (on average 1.3017775114839225) internal successors, (45626), 35870 states have internal predecessors, (45626), 18893 states have call successors, (18893), 2486 states have call predecessors, (18893), 2583 states have return successors, (19840), 18506 states have call predecessors, (19840), 18892 states have call successors, (19840) [2021-11-19 04:41:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56526 states to 56526 states and 84359 transitions. [2021-11-19 04:41:19,151 INFO L78 Accepts]: Start accepts. Automaton has 56526 states and 84359 transitions. Word has length 208 [2021-11-19 04:41:19,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:41:19,154 INFO L470 AbstractCegarLoop]: Abstraction has 56526 states and 84359 transitions. [2021-11-19 04:41:19,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-19 04:41:19,155 INFO L276 IsEmpty]: Start isEmpty. Operand 56526 states and 84359 transitions. [2021-11-19 04:41:19,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-19 04:41:19,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:41:19,188 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 04:41:19,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:41:19,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:41:19,411 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:41:19,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:41:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash -690177931, now seen corresponding path program 1 times [2021-11-19 04:41:19,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:41:19,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386784318] [2021-11-19 04:41:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:41:19,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:41:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:41:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:41:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:41:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:41:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:41:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:41:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:41:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:41:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-19 04:41:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-19 04:41:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-19 04:41:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-19 04:41:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:19,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-19 04:41:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-19 04:41:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-19 04:41:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-11-19 04:41:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-19 04:41:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:41:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:41:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-11-19 04:41:20,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:41:20,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386784318] [2021-11-19 04:41:20,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386784318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:41:20,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836469970] [2021-11-19 04:41:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:41:20,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:41:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:41:20,084 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:41:20,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 04:41:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:41:20,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 3029 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 04:41:20,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:41:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-19 04:41:21,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:41:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 04:41:22,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836469970] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:41:22,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:41:22,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-19 04:41:22,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539815241] [2021-11-19 04:41:22,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:41:22,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 04:41:22,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:41:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 04:41:22,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-19 04:41:22,551 INFO L87 Difference]: Start difference. First operand 56526 states and 84359 transitions. Second operand has 24 states, 24 states have (on average 6.75) internal successors, (162), 15 states have internal predecessors, (162), 5 states have call successors, (49), 9 states have call predecessors, (49), 7 states have return successors, (41), 6 states have call predecessors, (41), 5 states have call successors, (41) [2021-11-19 04:41:24,594 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:41:26,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:41:28,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:41:30,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:41:32,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:41:34,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:41:55,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:41:56,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:41:59,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:01,267 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:03,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:05,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:06,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:08,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:10,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:12,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:15,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:16,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:19,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:21,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:23,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:24,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:26,770 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:28,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:30,639 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:31,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:33,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:35,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:37,415 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:40,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:42,461 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:44,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:46,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:48,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:49,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:52,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:53,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:55,852 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:57,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:42:59,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:43:02,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:43:04,070 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:43:06,945 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:43:09,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:43:16,977 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:43:19,019 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:43:21,069 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:43:22,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:44:06,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:44:55,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:55,699 INFO L93 Difference]: Finished difference Result 157766 states and 236388 transitions. [2021-11-19 04:44:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-19 04:44:55,699 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 15 states have internal predecessors, (162), 5 states have call successors, (49), 9 states have call predecessors, (49), 7 states have return successors, (41), 6 states have call predecessors, (41), 5 states have call successors, (41) Word has length 221 [2021-11-19 04:44:55,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:56,626 INFO L225 Difference]: With dead ends: 157766 [2021-11-19 04:44:56,626 INFO L226 Difference]: Without dead ends: 101066 [2021-11-19 04:44:56,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 512 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5672 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2496, Invalid=13506, Unknown=0, NotChecked=0, Total=16002 [2021-11-19 04:44:56,900 INFO L933 BasicCegarLoop]: 4391 mSDtfsCounter, 19030 mSDsluCounter, 35174 mSDsCounter, 0 mSdLazyCounter, 77534 mSolverCounterSat, 24856 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19780 SdHoareTripleChecker+Valid, 39565 SdHoareTripleChecker+Invalid, 102408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 24856 IncrementalHoareTripleChecker+Valid, 77534 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 203.4s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:56,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19780 Valid, 39565 Invalid, 102408 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [24856 Valid, 77534 Invalid, 18 Unknown, 0 Unchecked, 203.4s Time] [2021-11-19 04:44:56,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101066 states. [2021-11-19 04:45:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101066 to 97873. [2021-11-19 04:45:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97873 states, 60603 states have (on average 1.300133656749666) internal successors, (78792), 62015 states have internal predecessors, (78792), 32804 states have call successors, (32804), 4311 states have call predecessors, (32804), 4465 states have return successors, (34407), 32122 states have call predecessors, (34407), 32803 states have call successors, (34407) [2021-11-19 04:45:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97873 states to 97873 states and 146003 transitions. [2021-11-19 04:45:03,422 INFO L78 Accepts]: Start accepts. Automaton has 97873 states and 146003 transitions. Word has length 221 [2021-11-19 04:45:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:45:03,423 INFO L470 AbstractCegarLoop]: Abstraction has 97873 states and 146003 transitions. [2021-11-19 04:45:03,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.75) internal successors, (162), 15 states have internal predecessors, (162), 5 states have call successors, (49), 9 states have call predecessors, (49), 7 states have return successors, (41), 6 states have call predecessors, (41), 5 states have call successors, (41) [2021-11-19 04:45:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 97873 states and 146003 transitions. [2021-11-19 04:45:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-19 04:45:03,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:45:03,462 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-19 04:45:03,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:45:03,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-19 04:45:03,687 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:45:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:45:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash -388099625, now seen corresponding path program 1 times [2021-11-19 04:45:03,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:45:03,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670042002] [2021-11-19 04:45:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:45:03,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:45:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:45:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:45:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:03,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:45:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:45:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-19 04:45:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:45:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-19 04:45:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:45:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-19 04:45:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-19 04:45:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-19 04:45:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-19 04:45:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-19 04:45:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-19 04:45:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-19 04:45:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-19 04:45:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-19 04:45:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-19 04:45:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-11-19 04:45:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-11-19 04:45:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-11-19 04:45:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 04:45:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-19 04:45:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:04,737 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2021-11-19 04:45:04,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:45:04,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670042002] [2021-11-19 04:45:04,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670042002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 04:45:04,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353876070] [2021-11-19 04:45:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:45:04,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:45:04,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:45:04,743 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:45:04,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc14c83-18a2-4316-8c24-882cd0f76f0e/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 04:45:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:45:05,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 3031 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 04:45:05,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:45:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2021-11-19 04:45:06,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:45:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-19 04:45:07,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353876070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:45:07,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 04:45:07,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-19 04:45:07,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240977606] [2021-11-19 04:45:07,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 04:45:07,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 04:45:07,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:45:07,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 04:45:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-19 04:45:07,329 INFO L87 Difference]: Start difference. First operand 97873 states and 146003 transitions. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 15 states have internal predecessors, (164), 5 states have call successors, (49), 9 states have call predecessors, (49), 7 states have return successors, (41), 6 states have call predecessors, (41), 5 states have call successors, (41) [2021-11-19 04:45:08,441 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:45:10,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:45:13,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 04:45:38,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []