./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:25:09,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:25:09,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:25:09,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:25:09,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:25:09,088 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:25:09,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:25:09,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:25:09,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:25:09,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:25:09,096 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:25:09,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:25:09,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:25:09,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:25:09,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:25:09,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:25:09,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:25:09,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:25:09,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:25:09,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:25:09,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:25:09,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:25:09,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:25:09,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:25:09,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:25:09,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:25:09,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:25:09,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:25:09,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:25:09,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:25:09,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:25:09,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:25:09,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:25:09,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:25:09,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:25:09,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:25:09,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:25:09,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:25:09,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:25:09,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:25:09,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:25:09,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 20:25:09,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:25:09,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:25:09,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:25:09,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:25:09,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:25:09,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:25:09,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:25:09,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:25:09,174 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:25:09,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:25:09,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:25:09,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:25:09,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:25:09,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:25:09,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:25:09,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:25:09,176 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:25:09,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:25:09,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:25:09,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:25:09,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:25:09,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:25:09,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:25:09,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:25:09,177 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:25:09,178 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:25:09,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:25:09,178 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:25:09,178 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:25:09,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:25:09,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:25:09,179 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_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 [2021-12-06 20:25:09,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:25:09,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:25:09,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:25:09,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:25:09,399 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:25:09,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2021-12-06 20:25:09,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/data/e1daa9c2b/1973d94828e44afd86cf62276fe6e286/FLAG5df1a3778 [2021-12-06 20:25:10,048 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:25:10,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2021-12-06 20:25:10,080 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/data/e1daa9c2b/1973d94828e44afd86cf62276fe6e286/FLAG5df1a3778 [2021-12-06 20:25:10,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/data/e1daa9c2b/1973d94828e44afd86cf62276fe6e286 [2021-12-06 20:25:10,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:25:10,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:25:10,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:25:10,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:25:10,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:25:10,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:25:10" (1/1) ... [2021-12-06 20:25:10,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a50e838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:10, skipping insertion in model container [2021-12-06 20:25:10,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:25:10" (1/1) ... [2021-12-06 20:25:10,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:25:10,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:25:11,267 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_e1e2ee3d-1571-4009-add2-e279608cc180/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2021-12-06 20:25:11,626 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-06 20:25:11,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:25:11,647 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:25:11,771 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_e1e2ee3d-1571-4009-add2-e279608cc180/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2021-12-06 20:25:11,863 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-06 20:25:11,865 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:25:11,897 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:25:11,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11 WrapperNode [2021-12-06 20:25:11,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:25:11,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:25:11,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:25:11,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:25:11,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:11,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,013 INFO L137 Inliner]: procedures = 184, calls = 840, calls flagged for inlining = 74, calls inlined = 63, statements flattened = 2080 [2021-12-06 20:25:12,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:25:12,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:25:12,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:25:12,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:25:12,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:25:12,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:25:12,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:25:12,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:25:12,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (1/1) ... [2021-12-06 20:25:12,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:25:12,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:25:12,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:25:12,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:25:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2021-12-06 20:25:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2021-12-06 20:25:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 20:25:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 20:25:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2021-12-06 20:25:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2021-12-06 20:25:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-06 20:25:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-06 20:25:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2021-12-06 20:25:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2021-12-06 20:25:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 20:25:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 20:25:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:25:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-06 20:25:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-06 20:25:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2021-12-06 20:25:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2021-12-06 20:25:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-06 20:25:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-06 20:25:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2021-12-06 20:25:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2021-12-06 20:25:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 20:25:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 20:25:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2021-12-06 20:25:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2021-12-06 20:25:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2021-12-06 20:25:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2021-12-06 20:25:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2021-12-06 20:25:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2021-12-06 20:25:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2021-12-06 20:25:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2021-12-06 20:25:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-06 20:25:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-06 20:25:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 20:25:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 20:25:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2021-12-06 20:25:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2021-12-06 20:25:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2021-12-06 20:25:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2021-12-06 20:25:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-06 20:25:12,156 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-06 20:25:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-06 20:25:12,156 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-06 20:25:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:25:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 20:25:12,156 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 20:25:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 20:25:12,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 20:25:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2021-12-06 20:25:12,156 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2021-12-06 20:25:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 20:25:12,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 20:25:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2021-12-06 20:25:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2021-12-06 20:25:12,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 20:25:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 20:25:12,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 20:25:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 20:25:12,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:25:12,157 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2021-12-06 20:25:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2021-12-06 20:25:12,157 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 20:25:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 20:25:12,157 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-06 20:25:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-06 20:25:12,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:25:12,157 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2021-12-06 20:25:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 20:25:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2021-12-06 20:25:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-12-06 20:25:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-06 20:25:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-06 20:25:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-12-06 20:25:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-12-06 20:25:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 20:25:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 20:25:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 20:25:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 20:25:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2021-12-06 20:25:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2021-12-06 20:25:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2021-12-06 20:25:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2021-12-06 20:25:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-06 20:25:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-06 20:25:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2021-12-06 20:25:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2021-12-06 20:25:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-06 20:25:12,159 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-06 20:25:12,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:25:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 20:25:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-06 20:25:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-06 20:25:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-06 20:25:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-06 20:25:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2021-12-06 20:25:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2021-12-06 20:25:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2021-12-06 20:25:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2021-12-06 20:25:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2021-12-06 20:25:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2021-12-06 20:25:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-06 20:25:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-06 20:25:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 20:25:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 20:25:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 20:25:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 20:25:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-06 20:25:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-06 20:25:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2021-12-06 20:25:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2021-12-06 20:25:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2021-12-06 20:25:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2021-12-06 20:25:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:25:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2021-12-06 20:25:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2021-12-06 20:25:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-06 20:25:12,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-06 20:25:12,161 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-06 20:25:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-06 20:25:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:25:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:25:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2021-12-06 20:25:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2021-12-06 20:25:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2021-12-06 20:25:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2021-12-06 20:25:12,162 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 20:25:12,162 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 20:25:12,486 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:25:12,488 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:25:12,697 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 20:25:13,681 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:25:13,696 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:25:13,696 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 20:25:13,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:25:13 BoogieIcfgContainer [2021-12-06 20:25:13,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:25:13,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:25:13,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:25:13,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:25:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:25:10" (1/3) ... [2021-12-06 20:25:13,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b8ae68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:25:13, skipping insertion in model container [2021-12-06 20:25:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:25:11" (2/3) ... [2021-12-06 20:25:13,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b8ae68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:25:13, skipping insertion in model container [2021-12-06 20:25:13,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:25:13" (3/3) ... [2021-12-06 20:25:13,705 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2021-12-06 20:25:13,710 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:25:13,710 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:25:13,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:25:13,759 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:25:13,759 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:25:13,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 826 states, 571 states have (on average 1.3134851138353765) internal successors, (750), 588 states have internal predecessors, (750), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2021-12-06 20:25:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 20:25:13,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:13,807 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:25:13,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1130854638, now seen corresponding path program 1 times [2021-12-06 20:25:13,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:13,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781676356] [2021-12-06 20:25:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:13,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:25:14,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:14,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781676356] [2021-12-06 20:25:14,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781676356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:14,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:14,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:25:14,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999903706] [2021-12-06 20:25:14,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:14,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:25:14,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:25:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:25:14,246 INFO L87 Difference]: Start difference. First operand has 826 states, 571 states have (on average 1.3134851138353765) internal successors, (750), 588 states have internal predecessors, (750), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:25:16,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:16,652 INFO L93 Difference]: Finished difference Result 2630 states and 3786 transitions. [2021-12-06 20:25:16,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:25:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-06 20:25:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:16,679 INFO L225 Difference]: With dead ends: 2630 [2021-12-06 20:25:16,680 INFO L226 Difference]: Without dead ends: 1763 [2021-12-06 20:25:16,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:25:16,692 INFO L933 BasicCegarLoop]: 1225 mSDtfsCounter, 1572 mSDsluCounter, 3306 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:16,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1726 Valid, 4531 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 20:25:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2021-12-06 20:25:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1601. [2021-12-06 20:25:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1111 states have (on average 1.297929792979298) internal successors, (1442), 1136 states have internal predecessors, (1442), 370 states have call successors, (370), 118 states have call predecessors, (370), 119 states have return successors, (383), 368 states have call predecessors, (383), 369 states have call successors, (383) [2021-12-06 20:25:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2195 transitions. [2021-12-06 20:25:16,848 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2195 transitions. Word has length 32 [2021-12-06 20:25:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:16,848 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2195 transitions. [2021-12-06 20:25:16,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:25:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2195 transitions. [2021-12-06 20:25:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:25:16,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:16,861 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:25:16,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:25:16,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:16,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1456852114, now seen corresponding path program 1 times [2021-12-06 20:25:16,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:16,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024058267] [2021-12-06 20:25:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:16,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:16,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:16,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 20:25:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:17,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:25:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:17,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:25:17,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:17,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024058267] [2021-12-06 20:25:17,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024058267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:17,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:17,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:25:17,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63318663] [2021-12-06 20:25:17,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:17,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:25:17,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:17,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:25:17,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:25:17,046 INFO L87 Difference]: Start difference. First operand 1601 states and 2195 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 20:25:19,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:25:20,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:20,420 INFO L93 Difference]: Finished difference Result 3585 states and 5064 transitions. [2021-12-06 20:25:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:25:20,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2021-12-06 20:25:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:20,432 INFO L225 Difference]: With dead ends: 3585 [2021-12-06 20:25:20,432 INFO L226 Difference]: Without dead ends: 1992 [2021-12-06 20:25:20,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:25:20,438 INFO L933 BasicCegarLoop]: 1065 mSDtfsCounter, 1016 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 827 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 827 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:20,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 2458 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [827 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 20:25:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-12-06 20:25:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1702. [2021-12-06 20:25:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1188 states have (on average 1.2971380471380471) internal successors, (1541), 1216 states have internal predecessors, (1541), 382 states have call successors, (382), 127 states have call predecessors, (382), 131 states have return successors, (401), 380 states have call predecessors, (401), 381 states have call successors, (401) [2021-12-06 20:25:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2324 transitions. [2021-12-06 20:25:20,516 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2324 transitions. Word has length 77 [2021-12-06 20:25:20,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:20,516 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 2324 transitions. [2021-12-06 20:25:20,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 20:25:20,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2324 transitions. [2021-12-06 20:25:20,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 20:25:20,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:20,522 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-06 20:25:20,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:25:20,522 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:20,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1040348853, now seen corresponding path program 1 times [2021-12-06 20:25:20,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:20,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528130603] [2021-12-06 20:25:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:20,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 20:25:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:25:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 20:25:20,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:20,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528130603] [2021-12-06 20:25:20,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528130603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:20,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:20,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:25:20,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930255011] [2021-12-06 20:25:20,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:20,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:25:20,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:25:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:25:20,703 INFO L87 Difference]: Start difference. First operand 1702 states and 2324 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 20:25:23,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:23,679 INFO L93 Difference]: Finished difference Result 5174 states and 7332 transitions. [2021-12-06 20:25:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:25:23,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 101 [2021-12-06 20:25:23,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:23,696 INFO L225 Difference]: With dead ends: 5174 [2021-12-06 20:25:23,696 INFO L226 Difference]: Without dead ends: 3501 [2021-12-06 20:25:23,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:25:23,702 INFO L933 BasicCegarLoop]: 1195 mSDtfsCounter, 2523 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:23,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 2475 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1607 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 20:25:23,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-12-06 20:25:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2946. [2021-12-06 20:25:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2072 states have (on average 1.2866795366795367) internal successors, (2666), 2114 states have internal predecessors, (2666), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2021-12-06 20:25:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 3953 transitions. [2021-12-06 20:25:23,852 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 3953 transitions. Word has length 101 [2021-12-06 20:25:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:23,852 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 3953 transitions. [2021-12-06 20:25:23,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 20:25:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 3953 transitions. [2021-12-06 20:25:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 20:25:23,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:23,859 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-06 20:25:23,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:25:23,860 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2025083819, now seen corresponding path program 1 times [2021-12-06 20:25:23,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:23,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515434135] [2021-12-06 20:25:23,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:23,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:23,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:23,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:23,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:23,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:25:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:25:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 20:25:24,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:24,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515434135] [2021-12-06 20:25:24,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515434135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:24,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:24,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:25:24,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137399998] [2021-12-06 20:25:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:24,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:25:24,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:25:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:25:24,032 INFO L87 Difference]: Start difference. First operand 2946 states and 3953 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-06 20:25:27,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:25:28,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:28,078 INFO L93 Difference]: Finished difference Result 5025 states and 7069 transitions. [2021-12-06 20:25:28,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:25:28,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 101 [2021-12-06 20:25:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:28,094 INFO L225 Difference]: With dead ends: 5025 [2021-12-06 20:25:28,094 INFO L226 Difference]: Without dead ends: 3496 [2021-12-06 20:25:28,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:25:28,099 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 908 mSDsluCounter, 1427 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 792 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:28,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 2440 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 1329 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 20:25:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2021-12-06 20:25:28,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2950. [2021-12-06 20:25:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2076 states have (on average 1.2861271676300579) internal successors, (2670), 2118 states have internal predecessors, (2670), 630 states have call successors, (630), 234 states have call predecessors, (630), 243 states have return successors, (657), 627 states have call predecessors, (657), 629 states have call successors, (657) [2021-12-06 20:25:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 3957 transitions. [2021-12-06 20:25:28,229 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 3957 transitions. Word has length 101 [2021-12-06 20:25:28,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:28,229 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 3957 transitions. [2021-12-06 20:25:28,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-06 20:25:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 3957 transitions. [2021-12-06 20:25:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 20:25:28,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:28,235 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2021-12-06 20:25:28,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:25:28,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash -383645622, now seen corresponding path program 1 times [2021-12-06 20:25:28,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:28,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687025849] [2021-12-06 20:25:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:28,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:25:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:25:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 20:25:28,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:28,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687025849] [2021-12-06 20:25:28,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687025849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:28,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:28,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 20:25:28,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029738046] [2021-12-06 20:25:28,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:28,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:25:28,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:25:28,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:25:28,476 INFO L87 Difference]: Start difference. First operand 2950 states and 3957 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 20:25:35,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:25:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:36,839 INFO L93 Difference]: Finished difference Result 7117 states and 9910 transitions. [2021-12-06 20:25:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 20:25:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 103 [2021-12-06 20:25:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:36,860 INFO L225 Difference]: With dead ends: 7117 [2021-12-06 20:25:36,860 INFO L226 Difference]: Without dead ends: 4196 [2021-12-06 20:25:36,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-12-06 20:25:36,867 INFO L933 BasicCegarLoop]: 1152 mSDtfsCounter, 2286 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 7494 mSolverCounterSat, 1288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 8782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1288 IncrementalHoareTripleChecker+Valid, 7494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:36,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2560 Valid, 4362 Invalid, 8782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1288 Valid, 7494 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-12-06 20:25:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2021-12-06 20:25:37,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 3490. [2021-12-06 20:25:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 2456 states have (on average 1.278501628664495) internal successors, (3140), 2506 states have internal predecessors, (3140), 752 states have call successors, (752), 276 states have call predecessors, (752), 281 states have return successors, (777), 745 states have call predecessors, (777), 751 states have call successors, (777) [2021-12-06 20:25:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 4669 transitions. [2021-12-06 20:25:37,028 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 4669 transitions. Word has length 103 [2021-12-06 20:25:37,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:37,029 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 4669 transitions. [2021-12-06 20:25:37,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 20:25:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 4669 transitions. [2021-12-06 20:25:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-06 20:25:37,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:37,035 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:37,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:25:37,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1730679408, now seen corresponding path program 1 times [2021-12-06 20:25:37,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:37,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6151582] [2021-12-06 20:25:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:37,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:25:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 20:25:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:25:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 20:25:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 20:25:37,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:37,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6151582] [2021-12-06 20:25:37,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6151582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:37,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:37,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:25:37,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851361201] [2021-12-06 20:25:37,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:37,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:25:37,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:37,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:25:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:25:37,329 INFO L87 Difference]: Start difference. First operand 3490 states and 4669 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 20:25:40,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:40,266 INFO L93 Difference]: Finished difference Result 7571 states and 10519 transitions. [2021-12-06 20:25:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:25:40,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 129 [2021-12-06 20:25:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:40,283 INFO L225 Difference]: With dead ends: 7571 [2021-12-06 20:25:40,284 INFO L226 Difference]: Without dead ends: 4110 [2021-12-06 20:25:40,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:25:40,291 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 873 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:40,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 3941 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 20:25:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-12-06 20:25:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 3518. [2021-12-06 20:25:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3518 states, 2476 states have (on average 1.2762520193861067) internal successors, (3160), 2528 states have internal predecessors, (3160), 752 states have call successors, (752), 276 states have call predecessors, (752), 289 states have return successors, (789), 751 states have call predecessors, (789), 751 states have call successors, (789) [2021-12-06 20:25:40,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3518 states to 3518 states and 4701 transitions. [2021-12-06 20:25:40,435 INFO L78 Accepts]: Start accepts. Automaton has 3518 states and 4701 transitions. Word has length 129 [2021-12-06 20:25:40,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:40,435 INFO L470 AbstractCegarLoop]: Abstraction has 3518 states and 4701 transitions. [2021-12-06 20:25:40,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 20:25:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3518 states and 4701 transitions. [2021-12-06 20:25:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 20:25:40,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:40,455 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:40,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:25:40,456 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:40,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1502778086, now seen corresponding path program 1 times [2021-12-06 20:25:40,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:40,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108979795] [2021-12-06 20:25:40,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:40,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:25:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 20:25:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:25:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:25:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 20:25:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:25:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 20:25:40,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:40,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108979795] [2021-12-06 20:25:40,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108979795] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:40,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:40,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:25:40,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414075164] [2021-12-06 20:25:40,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:40,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:25:40,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:40,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:25:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:25:40,711 INFO L87 Difference]: Start difference. First operand 3518 states and 4701 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:25:43,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:25:45,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:25:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:45,732 INFO L93 Difference]: Finished difference Result 7580 states and 10454 transitions. [2021-12-06 20:25:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:25:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 150 [2021-12-06 20:25:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:45,748 INFO L225 Difference]: With dead ends: 7580 [2021-12-06 20:25:45,748 INFO L226 Difference]: Without dead ends: 4078 [2021-12-06 20:25:45,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:25:45,756 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 1875 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 1036 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 2016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:45,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2004 Valid, 1753 Invalid, 2016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 979 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-12-06 20:25:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2021-12-06 20:25:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3494. [2021-12-06 20:25:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3494 states, 2454 states have (on average 1.2709861450692748) internal successors, (3119), 2506 states have internal predecessors, (3119), 750 states have call successors, (750), 276 states have call predecessors, (750), 289 states have return successors, (785), 749 states have call predecessors, (785), 749 states have call successors, (785) [2021-12-06 20:25:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3494 states to 3494 states and 4654 transitions. [2021-12-06 20:25:45,888 INFO L78 Accepts]: Start accepts. Automaton has 3494 states and 4654 transitions. Word has length 150 [2021-12-06 20:25:45,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:45,889 INFO L470 AbstractCegarLoop]: Abstraction has 3494 states and 4654 transitions. [2021-12-06 20:25:45,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:25:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3494 states and 4654 transitions. [2021-12-06 20:25:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-06 20:25:45,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:45,895 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:45,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:25:45,895 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1027987929, now seen corresponding path program 1 times [2021-12-06 20:25:45,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:45,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233547052] [2021-12-06 20:25:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:45,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:45,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:25:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 20:25:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:25:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:25:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 20:25:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:25:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 20:25:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:25:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,208 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 20:25:46,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:46,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233547052] [2021-12-06 20:25:46,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233547052] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:25:46,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476180652] [2021-12-06 20:25:46,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:46,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:25:46,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:25:46,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:25:46,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:25:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:46,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 20:25:46,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:46,819 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 20:25:46,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:25:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-06 20:25:47,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476180652] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 20:25:47,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:25:47,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 8] total 22 [2021-12-06 20:25:47,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586532405] [2021-12-06 20:25:47,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:47,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:25:47,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:47,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:25:47,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-12-06 20:25:47,283 INFO L87 Difference]: Start difference. First operand 3494 states and 4654 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-06 20:25:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:50,029 INFO L93 Difference]: Finished difference Result 8206 states and 11201 transitions. [2021-12-06 20:25:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:25:50,029 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 158 [2021-12-06 20:25:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:50,055 INFO L225 Difference]: With dead ends: 8206 [2021-12-06 20:25:50,055 INFO L226 Difference]: Without dead ends: 6126 [2021-12-06 20:25:50,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 336 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=673, Unknown=0, NotChecked=0, Total=870 [2021-12-06 20:25:50,063 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 4171 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 2015 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4304 SdHoareTripleChecker+Valid, 3528 SdHoareTripleChecker+Invalid, 5829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2015 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:50,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4304 Valid, 3528 Invalid, 5829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2015 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 20:25:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2021-12-06 20:25:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 5092. [2021-12-06 20:25:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 3569 states have (on average 1.2729055757915382) internal successors, (4543), 3652 states have internal predecessors, (4543), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-12-06 20:25:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 6835 transitions. [2021-12-06 20:25:50,276 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 6835 transitions. Word has length 158 [2021-12-06 20:25:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:50,276 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 6835 transitions. [2021-12-06 20:25:50,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-06 20:25:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 6835 transitions. [2021-12-06 20:25:50,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-06 20:25:50,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:50,283 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:50,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:25:50,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:25:50,485 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1503595608, now seen corresponding path program 1 times [2021-12-06 20:25:50,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:50,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224100093] [2021-12-06 20:25:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:50,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:25:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 20:25:50,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:25:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:25:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 20:25:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:25:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 20:25:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 20:25:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-06 20:25:50,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:50,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224100093] [2021-12-06 20:25:50,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224100093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:50,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:50,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:25:50,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112452788] [2021-12-06 20:25:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:50,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:25:50,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:50,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:25:50,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:25:50,716 INFO L87 Difference]: Start difference. First operand 5092 states and 6835 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:25:53,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:53,375 INFO L93 Difference]: Finished difference Result 9609 states and 13438 transitions. [2021-12-06 20:25:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:25:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-06 20:25:53,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:53,397 INFO L225 Difference]: With dead ends: 9609 [2021-12-06 20:25:53,397 INFO L226 Difference]: Without dead ends: 5931 [2021-12-06 20:25:53,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:25:53,409 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 624 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:53,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 3214 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 20:25:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5931 states. [2021-12-06 20:25:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5931 to 5090. [2021-12-06 20:25:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 3567 states have (on average 1.271937202130642) internal successors, (4537), 3650 states have internal predecessors, (4537), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-12-06 20:25:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 6829 transitions. [2021-12-06 20:25:53,608 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 6829 transitions. Word has length 160 [2021-12-06 20:25:53,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:53,609 INFO L470 AbstractCegarLoop]: Abstraction has 5090 states and 6829 transitions. [2021-12-06 20:25:53,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:25:53,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 6829 transitions. [2021-12-06 20:25:53,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 20:25:53,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:53,615 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:53,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:25:53,615 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:53,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1513318799, now seen corresponding path program 1 times [2021-12-06 20:25:53,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:53,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546697000] [2021-12-06 20:25:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:53,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:25:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 20:25:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:25:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:25:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 20:25:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:25:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 20:25:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 20:25:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:53,868 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 20:25:53,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:53,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546697000] [2021-12-06 20:25:53,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546697000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:53,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:53,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:25:53,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290010364] [2021-12-06 20:25:53,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:53,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:25:53,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:25:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:25:53,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:25:53,870 INFO L87 Difference]: Start difference. First operand 5090 states and 6829 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:25:57,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:57,001 INFO L93 Difference]: Finished difference Result 11009 states and 15299 transitions. [2021-12-06 20:25:57,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:25:57,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2021-12-06 20:25:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:57,024 INFO L225 Difference]: With dead ends: 11009 [2021-12-06 20:25:57,024 INFO L226 Difference]: Without dead ends: 5971 [2021-12-06 20:25:57,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:25:57,034 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 345 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 3492 SdHoareTripleChecker+Invalid, 2472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:57,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 3492 Invalid, 2472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 20:25:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2021-12-06 20:25:57,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5102. [2021-12-06 20:25:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 3579 states have (on average 1.2710254260966751) internal successors, (4549), 3662 states have internal predecessors, (4549), 1100 states have call successors, (1100), 389 states have call predecessors, (1100), 422 states have return successors, (1192), 1105 states have call predecessors, (1192), 1099 states have call successors, (1192) [2021-12-06 20:25:57,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 6841 transitions. [2021-12-06 20:25:57,233 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 6841 transitions. Word has length 162 [2021-12-06 20:25:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:57,234 INFO L470 AbstractCegarLoop]: Abstraction has 5102 states and 6841 transitions. [2021-12-06 20:25:57,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:25:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 6841 transitions. [2021-12-06 20:25:57,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 20:25:57,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:57,240 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:57,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:25:57,240 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:57,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1008301203, now seen corresponding path program 1 times [2021-12-06 20:25:57,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:57,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114202493] [2021-12-06 20:25:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:57,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:57,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:25:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:57,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:25:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:57,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:25:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:25:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:58,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:25:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:25:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:25:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:25:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:25:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 20:25:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:25:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 20:25:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 20:25:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:59,851 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 20:25:59,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:25:59,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114202493] [2021-12-06 20:25:59,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114202493] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:25:59,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874040205] [2021-12-06 20:25:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:59,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:25:59,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:25:59,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:25:59,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:26:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:00,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 20:26:00,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:26:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 20:26:00,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:26:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 20:26:01,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874040205] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:26:01,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:26:01,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 14, 12] total 56 [2021-12-06 20:26:01,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793194850] [2021-12-06 20:26:01,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:26:01,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-12-06 20:26:01,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:26:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-12-06 20:26:01,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2923, Unknown=0, NotChecked=0, Total=3080 [2021-12-06 20:26:01,748 INFO L87 Difference]: Start difference. First operand 5102 states and 6841 transitions. Second operand has 56 states, 50 states have (on average 4.58) internal successors, (229), 44 states have internal predecessors, (229), 14 states have call successors, (37), 5 states have call predecessors, (37), 13 states have return successors, (38), 17 states have call predecessors, (38), 14 states have call successors, (38) [2021-12-06 20:26:28,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:30,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:33,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:42,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:26:42,245 INFO L93 Difference]: Finished difference Result 13855 states and 19621 transitions. [2021-12-06 20:26:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-12-06 20:26:42,246 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 50 states have (on average 4.58) internal successors, (229), 44 states have internal predecessors, (229), 14 states have call successors, (37), 5 states have call predecessors, (37), 13 states have return successors, (38), 17 states have call predecessors, (38), 14 states have call successors, (38) Word has length 163 [2021-12-06 20:26:42,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:26:42,269 INFO L225 Difference]: With dead ends: 13855 [2021-12-06 20:26:42,269 INFO L226 Difference]: Without dead ends: 8782 [2021-12-06 20:26:42,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 359 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5620 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1430, Invalid=20622, Unknown=0, NotChecked=0, Total=22052 [2021-12-06 20:26:42,286 INFO L933 BasicCegarLoop]: 1188 mSDtfsCounter, 2959 mSDsluCounter, 21555 mSDsCounter, 0 mSdLazyCounter, 35317 mSolverCounterSat, 2043 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 22743 SdHoareTripleChecker+Invalid, 37361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2043 IncrementalHoareTripleChecker+Valid, 35317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:26:42,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3058 Valid, 22743 Invalid, 37361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2043 Valid, 35317 Invalid, 1 Unknown, 0 Unchecked, 33.5s Time] [2021-12-06 20:26:42,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8782 states. [2021-12-06 20:26:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8782 to 6012. [2021-12-06 20:26:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 4224 states have (on average 1.2663352272727273) internal successors, (5349), 4334 states have internal predecessors, (5349), 1271 states have call successors, (1271), 463 states have call predecessors, (1271), 516 states have return successors, (1483), 1273 states have call predecessors, (1483), 1270 states have call successors, (1483) [2021-12-06 20:26:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 8103 transitions. [2021-12-06 20:26:42,590 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 8103 transitions. Word has length 163 [2021-12-06 20:26:42,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:26:42,591 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 8103 transitions. [2021-12-06 20:26:42,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 50 states have (on average 4.58) internal successors, (229), 44 states have internal predecessors, (229), 14 states have call successors, (37), 5 states have call predecessors, (37), 13 states have return successors, (38), 17 states have call predecessors, (38), 14 states have call successors, (38) [2021-12-06 20:26:42,591 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 8103 transitions. [2021-12-06 20:26:42,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-06 20:26:42,600 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:26:42,600 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:26:42,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:26:42,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:26:42,801 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:26:42,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:26:42,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1385830112, now seen corresponding path program 1 times [2021-12-06 20:26:42,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:26:42,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806958340] [2021-12-06 20:26:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:26:42,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:26:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:26:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:26:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:26:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:26:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:26:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:26:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:26:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:26:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:42,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:26:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:26:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:26:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:26:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 20:26:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:26:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:26:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 20:26:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 20:26:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 20:26:43,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:26:43,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806958340] [2021-12-06 20:26:43,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806958340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:26:43,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:26:43,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:26:43,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635946466] [2021-12-06 20:26:43,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:26:43,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:26:43,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:26:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:26:43,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:26:43,103 INFO L87 Difference]: Start difference. First operand 6012 states and 8103 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 20:26:47,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:48,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:26:48,103 INFO L93 Difference]: Finished difference Result 11946 states and 16568 transitions. [2021-12-06 20:26:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:26:48,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 177 [2021-12-06 20:26:48,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:26:48,121 INFO L225 Difference]: With dead ends: 11946 [2021-12-06 20:26:48,121 INFO L226 Difference]: Without dead ends: 6767 [2021-12-06 20:26:48,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:26:48,130 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 607 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 2929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:26:48,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 3927 Invalid, 2929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 20:26:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6767 states. [2021-12-06 20:26:48,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6767 to 6006. [2021-12-06 20:26:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6006 states, 4223 states have (on average 1.2659246980819323) internal successors, (5346), 4332 states have internal predecessors, (5346), 1269 states have call successors, (1269), 461 states have call predecessors, (1269), 513 states have return successors, (1477), 1271 states have call predecessors, (1477), 1268 states have call successors, (1477) [2021-12-06 20:26:48,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6006 states to 6006 states and 8092 transitions. [2021-12-06 20:26:48,413 INFO L78 Accepts]: Start accepts. Automaton has 6006 states and 8092 transitions. Word has length 177 [2021-12-06 20:26:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:26:48,414 INFO L470 AbstractCegarLoop]: Abstraction has 6006 states and 8092 transitions. [2021-12-06 20:26:48,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 20:26:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 6006 states and 8092 transitions. [2021-12-06 20:26:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-06 20:26:48,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:26:48,422 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:26:48,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:26:48,423 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:26:48,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:26:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash 404118342, now seen corresponding path program 1 times [2021-12-06 20:26:48,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:26:48,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469632849] [2021-12-06 20:26:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:26:48,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:26:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:26:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:26:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:26:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:26:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:26:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:26:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:26:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:26:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:26:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:26:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 20:26:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:26:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:26:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:26:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:26:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 20:26:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 20:26:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 20:26:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 20:26:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-06 20:26:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 20:26:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:48,719 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-06 20:26:48,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:26:48,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469632849] [2021-12-06 20:26:48,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469632849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:26:48,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:26:48,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:26:48,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862406058] [2021-12-06 20:26:48,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:26:48,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:26:48,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:26:48,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:26:48,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:26:48,720 INFO L87 Difference]: Start difference. First operand 6006 states and 8092 transitions. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 4 states have internal predecessors, (141), 3 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 20:26:52,570 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:53,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:26:53,221 INFO L93 Difference]: Finished difference Result 12008 states and 16647 transitions. [2021-12-06 20:26:53,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:26:53,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 4 states have internal predecessors, (141), 3 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 224 [2021-12-06 20:26:53,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:26:53,239 INFO L225 Difference]: With dead ends: 12008 [2021-12-06 20:26:53,240 INFO L226 Difference]: Without dead ends: 6847 [2021-12-06 20:26:53,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:26:53,248 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 635 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 2553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:26:53,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 3532 Invalid, 2553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 20:26:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2021-12-06 20:26:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6020. [2021-12-06 20:26:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6020 states, 4237 states have (on average 1.2650460231295728) internal successors, (5360), 4346 states have internal predecessors, (5360), 1269 states have call successors, (1269), 461 states have call predecessors, (1269), 513 states have return successors, (1477), 1271 states have call predecessors, (1477), 1268 states have call successors, (1477) [2021-12-06 20:26:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 8106 transitions. [2021-12-06 20:26:53,570 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 8106 transitions. Word has length 224 [2021-12-06 20:26:53,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:26:53,570 INFO L470 AbstractCegarLoop]: Abstraction has 6020 states and 8106 transitions. [2021-12-06 20:26:53,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 4 states have internal predecessors, (141), 3 states have call successors, (22), 7 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 20:26:53,571 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 8106 transitions. [2021-12-06 20:26:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 20:26:53,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:26:53,579 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:26:53,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:26:53,579 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:26:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:26:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1409743659, now seen corresponding path program 1 times [2021-12-06 20:26:53,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:26:53,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775025815] [2021-12-06 20:26:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:26:53,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:26:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:26:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:26:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:26:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:26:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:26:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:26:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:26:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:26:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:26:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:26:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 20:26:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 20:26:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:26:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:26:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:26:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 20:26:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 20:26:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 20:26:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 20:26:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 20:26:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:26:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:26:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:54,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-06 20:26:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 20:26:54,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:26:54,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775025815] [2021-12-06 20:26:54,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775025815] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:26:54,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778101345] [2021-12-06 20:26:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:26:54,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:26:54,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:26:54,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:26:54,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:26:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:54,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 20:26:54,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:26:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 20:26:54,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:26:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 20:26:55,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778101345] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:26:55,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:26:55,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2021-12-06 20:26:55,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240823701] [2021-12-06 20:26:55,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:26:55,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:26:55,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:26:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:26:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:26:55,079 INFO L87 Difference]: Start difference. First operand 6020 states and 8106 transitions. Second operand has 15 states, 15 states have (on average 10.8) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (39), 7 states have call predecessors, (39), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 20:26:58,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:00,347 INFO L93 Difference]: Finished difference Result 12008 states and 16653 transitions. [2021-12-06 20:27:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:27:00,348 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.8) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (39), 7 states have call predecessors, (39), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 226 [2021-12-06 20:27:00,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:00,364 INFO L225 Difference]: With dead ends: 12008 [2021-12-06 20:27:00,364 INFO L226 Difference]: Without dead ends: 6801 [2021-12-06 20:27:00,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:27:00,373 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 946 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 5192 SdHoareTripleChecker+Invalid, 3651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:00,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 5192 Invalid, 3651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [849 Valid, 2802 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-06 20:27:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2021-12-06 20:27:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6044. [2021-12-06 20:27:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6044 states, 4261 states have (on average 1.2635531565360245) internal successors, (5384), 4370 states have internal predecessors, (5384), 1269 states have call successors, (1269), 461 states have call predecessors, (1269), 513 states have return successors, (1477), 1271 states have call predecessors, (1477), 1268 states have call successors, (1477) [2021-12-06 20:27:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 8130 transitions. [2021-12-06 20:27:00,653 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 8130 transitions. Word has length 226 [2021-12-06 20:27:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:00,653 INFO L470 AbstractCegarLoop]: Abstraction has 6044 states and 8130 transitions. [2021-12-06 20:27:00,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.8) internal successors, (162), 10 states have internal predecessors, (162), 2 states have call successors, (39), 7 states have call predecessors, (39), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 20:27:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 8130 transitions. [2021-12-06 20:27:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 20:27:00,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:00,661 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:00,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:27:00,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:00,863 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:00,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash -523094384, now seen corresponding path program 1 times [2021-12-06 20:27:00,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:00,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999198192] [2021-12-06 20:27:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:00,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:00,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:00,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:00,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 20:27:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:27:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:27:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 20:27:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 20:27:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 20:27:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 20:27:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 20:27:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-06 20:27:01,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:01,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999198192] [2021-12-06 20:27:01,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999198192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:01,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:01,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:27:01,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218981224] [2021-12-06 20:27:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:01,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:27:01,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:27:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:01,153 INFO L87 Difference]: Start difference. First operand 6044 states and 8130 transitions. Second operand has 8 states, 8 states have (on average 16.25) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 20:27:04,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:05,294 INFO L93 Difference]: Finished difference Result 11964 states and 16518 transitions. [2021-12-06 20:27:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:27:05,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 190 [2021-12-06 20:27:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:05,318 INFO L225 Difference]: With dead ends: 11964 [2021-12-06 20:27:05,318 INFO L226 Difference]: Without dead ends: 6765 [2021-12-06 20:27:05,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:27:05,328 INFO L933 BasicCegarLoop]: 1603 mSDtfsCounter, 2206 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 1652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1652 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:05,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2353 Valid, 3382 Invalid, 3675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1652 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 20:27:05,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2021-12-06 20:27:05,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 5999. [2021-12-06 20:27:05,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5999 states, 4228 states have (on average 1.250236518448439) internal successors, (5286), 4336 states have internal predecessors, (5286), 1262 states have call successors, (1262), 456 states have call predecessors, (1262), 508 states have return successors, (1470), 1265 states have call predecessors, (1470), 1261 states have call successors, (1470) [2021-12-06 20:27:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5999 states to 5999 states and 8018 transitions. [2021-12-06 20:27:05,615 INFO L78 Accepts]: Start accepts. Automaton has 5999 states and 8018 transitions. Word has length 190 [2021-12-06 20:27:05,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:05,615 INFO L470 AbstractCegarLoop]: Abstraction has 5999 states and 8018 transitions. [2021-12-06 20:27:05,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.25) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 20:27:05,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5999 states and 8018 transitions. [2021-12-06 20:27:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-06 20:27:05,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:05,624 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:05,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:27:05,624 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1572021232, now seen corresponding path program 2 times [2021-12-06 20:27:05,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:05,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426168638] [2021-12-06 20:27:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:05,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:27:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 20:27:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 20:27:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:05,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 20:27:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 20:27:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 20:27:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 20:27:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:27:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 20:27:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 20:27:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 20:27:06,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:06,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426168638] [2021-12-06 20:27:06,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426168638] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:27:06,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544392667] [2021-12-06 20:27:06,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:27:06,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:06,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:06,146 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:27:06,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:27:07,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:27:07,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:27:07,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 20:27:07,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 20:27:07,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:27:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 20:27:07,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544392667] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:27:07,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:27:07,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 24 [2021-12-06 20:27:07,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511382102] [2021-12-06 20:27:07,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:27:07,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 20:27:07,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 20:27:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2021-12-06 20:27:07,762 INFO L87 Difference]: Start difference. First operand 5999 states and 8018 transitions. Second operand has 24 states, 24 states have (on average 7.125) internal successors, (171), 19 states have internal predecessors, (171), 2 states have call successors, (39), 7 states have call predecessors, (39), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 20:27:12,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:12,902 INFO L93 Difference]: Finished difference Result 11990 states and 16525 transitions. [2021-12-06 20:27:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 20:27:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 19 states have internal predecessors, (171), 2 states have call successors, (39), 7 states have call predecessors, (39), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 229 [2021-12-06 20:27:12,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:12,929 INFO L225 Difference]: With dead ends: 11990 [2021-12-06 20:27:12,929 INFO L226 Difference]: Without dead ends: 6804 [2021-12-06 20:27:12,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 495 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:27:12,938 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 961 mSDsluCounter, 8520 mSDsCounter, 0 mSdLazyCounter, 4901 mSolverCounterSat, 866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 9528 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 866 IncrementalHoareTripleChecker+Valid, 4901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:12,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 9528 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [866 Valid, 4901 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-06 20:27:12,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6804 states. [2021-12-06 20:27:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6804 to 6047. [2021-12-06 20:27:13,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6047 states, 4276 states have (on average 1.2474275023386343) internal successors, (5334), 4384 states have internal predecessors, (5334), 1262 states have call successors, (1262), 456 states have call predecessors, (1262), 508 states have return successors, (1470), 1265 states have call predecessors, (1470), 1261 states have call successors, (1470) [2021-12-06 20:27:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6047 states to 6047 states and 8066 transitions. [2021-12-06 20:27:13,221 INFO L78 Accepts]: Start accepts. Automaton has 6047 states and 8066 transitions. Word has length 229 [2021-12-06 20:27:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:13,222 INFO L470 AbstractCegarLoop]: Abstraction has 6047 states and 8066 transitions. [2021-12-06 20:27:13,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.125) internal successors, (171), 19 states have internal predecessors, (171), 2 states have call successors, (39), 7 states have call predecessors, (39), 5 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 20:27:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 6047 states and 8066 transitions. [2021-12-06 20:27:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:27:13,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:13,230 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:13,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:27:13,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 20:27:13,432 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:13,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:13,433 INFO L85 PathProgramCache]: Analyzing trace with hash -587216006, now seen corresponding path program 1 times [2021-12-06 20:27:13,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:13,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160889356] [2021-12-06 20:27:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:13,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 20:27:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:27:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 20:27:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 20:27:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 20:27:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 20:27:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 20:27:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 20:27:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 20:27:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-06 20:27:13,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:13,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160889356] [2021-12-06 20:27:13,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160889356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:13,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:13,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:27:13,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589144751] [2021-12-06 20:27:13,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:13,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:27:13,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:13,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:27:13,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:13,667 INFO L87 Difference]: Start difference. First operand 6047 states and 8066 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 20:27:17,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:18,633 INFO L93 Difference]: Finished difference Result 12108 states and 16594 transitions. [2021-12-06 20:27:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:27:18,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2021-12-06 20:27:18,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:18,648 INFO L225 Difference]: With dead ends: 12108 [2021-12-06 20:27:18,649 INFO L226 Difference]: Without dead ends: 6906 [2021-12-06 20:27:18,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:27:18,656 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 755 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 588 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:18,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 3704 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1853 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-12-06 20:27:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6906 states. [2021-12-06 20:27:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6906 to 6083. [2021-12-06 20:27:18,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 4303 states have (on average 1.2486637229839648) internal successors, (5373), 4411 states have internal predecessors, (5373), 1268 states have call successors, (1268), 459 states have call predecessors, (1268), 511 states have return successors, (1476), 1271 states have call predecessors, (1476), 1267 states have call successors, (1476) [2021-12-06 20:27:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 8117 transitions. [2021-12-06 20:27:18,939 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 8117 transitions. Word has length 208 [2021-12-06 20:27:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:18,940 INFO L470 AbstractCegarLoop]: Abstraction has 6083 states and 8117 transitions. [2021-12-06 20:27:18,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 20:27:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 8117 transitions. [2021-12-06 20:27:18,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:27:18,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:18,946 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:18,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:27:18,946 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:18,946 INFO L85 PathProgramCache]: Analyzing trace with hash -743196548, now seen corresponding path program 1 times [2021-12-06 20:27:18,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:18,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757673331] [2021-12-06 20:27:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:18,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 20:27:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:27:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 20:27:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 20:27:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 20:27:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 20:27:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 20:27:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 20:27:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 20:27:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-06 20:27:19,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:19,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757673331] [2021-12-06 20:27:19,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757673331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:19,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:19,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:27:19,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444354396] [2021-12-06 20:27:19,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:19,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:27:19,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:19,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:27:19,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:19,130 INFO L87 Difference]: Start difference. First operand 6083 states and 8117 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 20:27:22,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:23,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:23,540 INFO L93 Difference]: Finished difference Result 12962 states and 18278 transitions. [2021-12-06 20:27:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 20:27:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 208 [2021-12-06 20:27:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:23,559 INFO L225 Difference]: With dead ends: 12962 [2021-12-06 20:27:23,559 INFO L226 Difference]: Without dead ends: 6926 [2021-12-06 20:27:23,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:27:23,570 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 410 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 357 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 3877 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:23,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 3877 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 2436 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-12-06 20:27:23,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2021-12-06 20:27:23,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6089. [2021-12-06 20:27:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 4306 states have (on average 1.2480260102183) internal successors, (5374), 4420 states have internal predecessors, (5374), 1265 states have call successors, (1265), 459 states have call predecessors, (1265), 517 states have return successors, (1503), 1268 states have call predecessors, (1503), 1264 states have call successors, (1503) [2021-12-06 20:27:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 8142 transitions. [2021-12-06 20:27:23,874 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 8142 transitions. Word has length 208 [2021-12-06 20:27:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:23,874 INFO L470 AbstractCegarLoop]: Abstraction has 6089 states and 8142 transitions. [2021-12-06 20:27:23,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 4 states have internal predecessors, (128), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 20:27:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 8142 transitions. [2021-12-06 20:27:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:27:23,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:23,880 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:23,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:27:23,880 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash -539240044, now seen corresponding path program 1 times [2021-12-06 20:27:23,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:23,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637958809] [2021-12-06 20:27:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:23,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 20:27:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:27:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 20:27:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 20:27:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 20:27:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 20:27:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 20:27:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 20:27:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 20:27:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-06 20:27:24,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:24,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637958809] [2021-12-06 20:27:24,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637958809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:27:24,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341575423] [2021-12-06 20:27:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:24,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:24,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:24,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:27:24,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:27:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:24,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1571 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 20:27:24,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-06 20:27:24,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:27:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-06 20:27:25,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341575423] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:27:25,341 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:27:25,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 12] total 27 [2021-12-06 20:27:25,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212124275] [2021-12-06 20:27:25,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:27:25,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 20:27:25,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 20:27:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-12-06 20:27:25,342 INFO L87 Difference]: Start difference. First operand 6089 states and 8142 transitions. Second operand has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2021-12-06 20:27:29,857 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:31,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:31,583 INFO L93 Difference]: Finished difference Result 12234 states and 16883 transitions. [2021-12-06 20:27:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 20:27:31,584 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) Word has length 208 [2021-12-06 20:27:31,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:31,600 INFO L225 Difference]: With dead ends: 12234 [2021-12-06 20:27:31,600 INFO L226 Difference]: Without dead ends: 6986 [2021-12-06 20:27:31,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 449 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 20:27:31,608 INFO L933 BasicCegarLoop]: 1017 mSDtfsCounter, 694 mSDsluCounter, 13175 mSDsCounter, 0 mSdLazyCounter, 7237 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 14192 SdHoareTripleChecker+Invalid, 7803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 7237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:31,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 14192 Invalid, 7803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 7237 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-06 20:27:31,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2021-12-06 20:27:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 6098. [2021-12-06 20:27:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6098 states, 4315 states have (on average 1.2475086906141368) internal successors, (5383), 4426 states have internal predecessors, (5383), 1265 states have call successors, (1265), 459 states have call predecessors, (1265), 517 states have return successors, (1503), 1271 states have call predecessors, (1503), 1264 states have call successors, (1503) [2021-12-06 20:27:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 8151 transitions. [2021-12-06 20:27:31,898 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 8151 transitions. Word has length 208 [2021-12-06 20:27:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:31,898 INFO L470 AbstractCegarLoop]: Abstraction has 6098 states and 8151 transitions. [2021-12-06 20:27:31,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.115384615384615) internal successors, (159), 17 states have internal predecessors, (159), 5 states have call successors, (43), 6 states have call predecessors, (43), 7 states have return successors, (34), 8 states have call predecessors, (34), 5 states have call successors, (34) [2021-12-06 20:27:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 8151 transitions. [2021-12-06 20:27:31,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-06 20:27:31,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:31,904 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:31,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:27:32,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:32,106 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1145802450, now seen corresponding path program 1 times [2021-12-06 20:27:32,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:32,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094756145] [2021-12-06 20:27:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:32,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 20:27:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:27:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:27:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:27:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:27:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:27:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 20:27:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 20:27:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-06 20:27:32,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:32,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094756145] [2021-12-06 20:27:32,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094756145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:32,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:32,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:27:32,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909137580] [2021-12-06 20:27:32,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:32,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:27:32,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:27:32,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:27:32,313 INFO L87 Difference]: Start difference. First operand 6098 states and 8151 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 20:27:35,454 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:37,627 INFO L93 Difference]: Finished difference Result 15814 states and 21993 transitions. [2021-12-06 20:27:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:27:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 196 [2021-12-06 20:27:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:37,658 INFO L225 Difference]: With dead ends: 15814 [2021-12-06 20:27:37,658 INFO L226 Difference]: Without dead ends: 10557 [2021-12-06 20:27:37,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:27:37,669 INFO L933 BasicCegarLoop]: 1216 mSDtfsCounter, 2089 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2264 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 3811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 970 IncrementalHoareTripleChecker+Valid, 2841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:37,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2264 Valid, 4083 Invalid, 3811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [970 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 20:27:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10557 states. [2021-12-06 20:27:38,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10557 to 8792. [2021-12-06 20:27:38,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8792 states, 6210 states have (on average 1.2466988727858292) internal successors, (7742), 6367 states have internal predecessors, (7742), 1843 states have call successors, (1843), 656 states have call predecessors, (1843), 738 states have return successors, (2142), 1853 states have call predecessors, (2142), 1842 states have call successors, (2142) [2021-12-06 20:27:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8792 states to 8792 states and 11727 transitions. [2021-12-06 20:27:38,137 INFO L78 Accepts]: Start accepts. Automaton has 8792 states and 11727 transitions. Word has length 196 [2021-12-06 20:27:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:38,138 INFO L470 AbstractCegarLoop]: Abstraction has 8792 states and 11727 transitions. [2021-12-06 20:27:38,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (21), 7 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 20:27:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 8792 states and 11727 transitions. [2021-12-06 20:27:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-06 20:27:38,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:38,144 INFO L514 BasicCegarLoop]: trace histogram [10, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:38,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 20:27:38,145 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash -498245120, now seen corresponding path program 1 times [2021-12-06 20:27:38,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:38,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216789812] [2021-12-06 20:27:38,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:38,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:27:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:38,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:27:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:27:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:27:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:27:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:27:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 20:27:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:27:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 20:27:38,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:38,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216789812] [2021-12-06 20:27:38,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216789812] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:27:38,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74697759] [2021-12-06 20:27:38,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:38,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:38,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:38,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:27:38,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:27:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 20:27:39,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 20:27:39,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:27:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 20:27:40,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74697759] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:27:40,509 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:27:40,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 42 [2021-12-06 20:27:40,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474432691] [2021-12-06 20:27:40,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:27:40,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-06 20:27:40,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:40,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-06 20:27:40,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 20:27:40,510 INFO L87 Difference]: Start difference. First operand 8792 states and 11727 transitions. Second operand has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 37 states have internal predecessors, (180), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 20:27:47,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:47,910 INFO L93 Difference]: Finished difference Result 18067 states and 24989 transitions. [2021-12-06 20:27:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 20:27:47,910 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 37 states have internal predecessors, (180), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 187 [2021-12-06 20:27:47,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:47,936 INFO L225 Difference]: With dead ends: 18067 [2021-12-06 20:27:47,937 INFO L226 Difference]: Without dead ends: 10068 [2021-12-06 20:27:47,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 385 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=526, Invalid=1826, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 20:27:47,953 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 703 mSDsluCounter, 10470 mSDsCounter, 0 mSdLazyCounter, 6142 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 11483 SdHoareTripleChecker+Invalid, 6787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 6142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:47,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 11483 Invalid, 6787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 6142 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-06 20:27:47,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10068 states. [2021-12-06 20:27:48,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10068 to 8864. [2021-12-06 20:27:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8864 states, 6282 states have (on average 1.2438713785418656) internal successors, (7814), 6439 states have internal predecessors, (7814), 1843 states have call successors, (1843), 656 states have call predecessors, (1843), 738 states have return successors, (2142), 1853 states have call predecessors, (2142), 1842 states have call successors, (2142) [2021-12-06 20:27:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 11799 transitions. [2021-12-06 20:27:48,423 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 11799 transitions. Word has length 187 [2021-12-06 20:27:48,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:48,423 INFO L470 AbstractCegarLoop]: Abstraction has 8864 states and 11799 transitions. [2021-12-06 20:27:48,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.285714285714286) internal successors, (180), 37 states have internal predecessors, (180), 2 states have call successors, (38), 7 states have call predecessors, (38), 5 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 20:27:48,424 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 11799 transitions. [2021-12-06 20:27:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:27:48,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:48,430 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:48,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:48,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 20:27:48,632 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1383710344, now seen corresponding path program 2 times [2021-12-06 20:27:48,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:48,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870167807] [2021-12-06 20:27:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:48,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 20:27:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:27:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 20:27:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 20:27:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 20:27:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 20:27:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 20:27:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 20:27:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 20:27:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-06 20:27:49,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870167807] [2021-12-06 20:27:49,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870167807] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:27:49,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106398544] [2021-12-06 20:27:49,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:27:49,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:49,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:49,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:27:49,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:27:49,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:27:49,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:27:49,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1571 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 20:27:49,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 20:27:49,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:27:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-06 20:27:50,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106398544] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:27:50,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:27:50,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 12] total 27 [2021-12-06 20:27:50,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755563210] [2021-12-06 20:27:50,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:27:50,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 20:27:50,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:50,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 20:27:50,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2021-12-06 20:27:50,100 INFO L87 Difference]: Start difference. First operand 8864 states and 11799 transitions. Second operand has 27 states, 26 states have (on average 6.384615384615385) internal successors, (166), 17 states have internal predecessors, (166), 5 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2021-12-06 20:27:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:55,338 INFO L93 Difference]: Finished difference Result 18226 states and 25061 transitions. [2021-12-06 20:27:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 20:27:55,338 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.384615384615385) internal successors, (166), 17 states have internal predecessors, (166), 5 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) Word has length 208 [2021-12-06 20:27:55,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:55,373 INFO L225 Difference]: With dead ends: 18226 [2021-12-06 20:27:55,373 INFO L226 Difference]: Without dead ends: 10203 [2021-12-06 20:27:55,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 449 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 20:27:55,385 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 698 mSDsluCounter, 14423 mSDsCounter, 0 mSdLazyCounter, 7855 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 15441 SdHoareTripleChecker+Invalid, 8432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 7855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:55,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 15441 Invalid, 8432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 7855 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-12-06 20:27:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10203 states. [2021-12-06 20:27:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10203 to 8873. [2021-12-06 20:27:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8873 states, 6291 states have (on average 1.2435224924495312) internal successors, (7823), 6445 states have internal predecessors, (7823), 1843 states have call successors, (1843), 656 states have call predecessors, (1843), 738 states have return successors, (2142), 1856 states have call predecessors, (2142), 1842 states have call successors, (2142) [2021-12-06 20:27:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8873 states to 8873 states and 11808 transitions. [2021-12-06 20:27:55,844 INFO L78 Accepts]: Start accepts. Automaton has 8873 states and 11808 transitions. Word has length 208 [2021-12-06 20:27:55,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:55,845 INFO L470 AbstractCegarLoop]: Abstraction has 8873 states and 11808 transitions. [2021-12-06 20:27:55,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.384615384615385) internal successors, (166), 17 states have internal predecessors, (166), 5 states have call successors, (45), 6 states have call predecessors, (45), 7 states have return successors, (36), 8 states have call predecessors, (36), 5 states have call successors, (36) [2021-12-06 20:27:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 8873 states and 11808 transitions. [2021-12-06 20:27:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-06 20:27:55,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:55,852 INFO L514 BasicCegarLoop]: trace histogram [16, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:55,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:56,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 20:27:56,054 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash -624497240, now seen corresponding path program 2 times [2021-12-06 20:27:56,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:56,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913191571] [2021-12-06 20:27:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:56,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:27:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:27:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:56,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:27:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:27:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 20:27:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 20:27:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 20:27:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 20:27:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 20:27:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-12-06 20:27:56,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:56,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913191571] [2021-12-06 20:27:56,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913191571] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:27:56,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453761987] [2021-12-06 20:27:56,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:27:56,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:56,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:56,868 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:27:56,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1e2ee3d-1571-4009-add2-e279608cc180/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:27:59,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:27:59,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:27:59,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-06 20:27:59,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:59,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-06 20:29:05,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4