./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.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_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/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_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/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_6ddbe211-7cc4-4455-abd2-7a5391034be0/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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:56:47,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:56:47,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:56:47,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:56:47,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:56:47,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:56:47,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:56:47,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:56:47,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:56:47,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:56:47,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:56:47,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:56:47,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:56:47,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:56:47,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:56:47,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:56:47,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:56:47,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:56:47,912 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:56:47,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:56:47,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:56:47,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:56:47,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:56:47,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:56:47,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:56:47,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:56:47,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:56:47,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:56:47,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:56:47,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:56:47,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:56:47,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:56:47,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:56:47,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:56:47,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:56:47,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:56:47,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:56:47,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:56:47,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:56:47,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:56:47,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:56:47,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 20:56:47,946 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:56:47,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:56:47,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:56:47,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:56:47,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:56:47,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:56:47,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:56:47,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:56:47,948 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:56:47,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:56:47,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:56:47,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:56:47,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:56:47,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:56:47,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:56:47,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:56:47,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:56:47,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:56:47,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:56:47,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:56:47,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:56:47,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:56:47,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:56:47,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:56:47,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:56:47,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:56:47,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:56:47,950 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:56:47,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:56:47,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:56:47,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:56:47,950 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_6ddbe211-7cc4-4455-abd2-7a5391034be0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-12-06 20:56:48,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:56:48,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:56:48,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:56:48,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:56:48,153 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:56:48,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-06 20:56:48,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/data/e0b8dcd75/93ca87876ae847fc9263457cfb37c864/FLAG3247c3a99 [2021-12-06 20:56:48,769 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:56:48,769 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-06 20:56:48,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/data/e0b8dcd75/93ca87876ae847fc9263457cfb37c864/FLAG3247c3a99 [2021-12-06 20:56:49,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/data/e0b8dcd75/93ca87876ae847fc9263457cfb37c864 [2021-12-06 20:56:49,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:56:49,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:56:49,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:56:49,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:56:49,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:56:49,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:56:49" (1/1) ... [2021-12-06 20:56:49,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606d3b5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:49, skipping insertion in model container [2021-12-06 20:56:49,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:56:49" (1/1) ... [2021-12-06 20:56:49,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:56:49,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:56:50,057 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_6ddbe211-7cc4-4455-abd2-7a5391034be0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-12-06 20:56:50,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:56:50,105 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:56:50,248 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_6ddbe211-7cc4-4455-abd2-7a5391034be0/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-12-06 20:56:50,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:56:50,295 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:56:50,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50 WrapperNode [2021-12-06 20:56:50,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:56:50,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:56:50,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:56:50,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:56:50,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,451 INFO L137 Inliner]: procedures = 189, calls = 1289, calls flagged for inlining = 74, calls inlined = 74, statements flattened = 3243 [2021-12-06 20:56:50,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:56:50,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:56:50,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:56:50,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:56:50,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:56:50,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:56:50,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:56:50,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:56:50,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (1/1) ... [2021-12-06 20:56:50,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:56:50,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:56:50,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:56:50,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:56:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2021-12-06 20:56:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2021-12-06 20:56:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-06 20:56:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-06 20:56:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2021-12-06 20:56:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2021-12-06 20:56:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-06 20:56:50,671 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-06 20:56:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 20:56:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 20:56:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 20:56:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 20:56:50,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 20:56:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:56:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 20:56:50,671 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 20:56:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2021-12-06 20:56:50,671 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2021-12-06 20:56:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2021-12-06 20:56:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2021-12-06 20:56:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 20:56:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 20:56:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-12-06 20:56:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-12-06 20:56:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2021-12-06 20:56:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2021-12-06 20:56:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 20:56:50,672 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 20:56:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 20:56:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 20:56:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-12-06 20:56:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-12-06 20:56:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2021-12-06 20:56:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2021-12-06 20:56:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-06 20:56:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-06 20:56:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-12-06 20:56:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-12-06 20:56:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2021-12-06 20:56:50,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2021-12-06 20:56:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2021-12-06 20:56:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2021-12-06 20:56:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:56:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-06 20:56:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-06 20:56:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 20:56:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 20:56:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2021-12-06 20:56:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2021-12-06 20:56:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-12-06 20:56:50,674 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-12-06 20:56:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2021-12-06 20:56:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2021-12-06 20:56:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 20:56:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 20:56:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 20:56:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 20:56:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2021-12-06 20:56:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2021-12-06 20:56:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 20:56:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 20:56:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 20:56:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 20:56:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2021-12-06 20:56:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2021-12-06 20:56:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:56:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-12-06 20:56:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2021-12-06 20:56:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2021-12-06 20:56:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-06 20:56:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-06 20:56:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 20:56:50,676 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 20:56:50,676 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2021-12-06 20:56:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2021-12-06 20:56:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-06 20:56:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-06 20:56:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:56:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-12-06 20:56:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-12-06 20:56:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2021-12-06 20:56:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2021-12-06 20:56:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-06 20:56:50,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-06 20:56:50,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:56:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:56:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 20:56:50,678 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 20:56:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 20:56:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2021-12-06 20:56:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2021-12-06 20:56:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-12-06 20:56:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-12-06 20:56:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:56:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2021-12-06 20:56:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2021-12-06 20:56:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2021-12-06 20:56:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2021-12-06 20:56:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-06 20:56:50,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-06 20:56:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-06 20:56:50,690 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-06 20:56:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 20:56:50,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 20:56:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-06 20:56:50,690 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-06 20:56:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 20:56:50,690 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 20:56:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-06 20:56:50,690 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-06 20:56:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2021-12-06 20:56:50,690 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2021-12-06 20:56:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:56:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 20:56:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-06 20:56:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-06 20:56:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-06 20:56:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-06 20:56:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 20:56:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 20:56:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-12-06 20:56:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-12-06 20:56:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-06 20:56:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-06 20:56:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-12-06 20:56:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-12-06 20:56:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-06 20:56:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-06 20:56:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-06 20:56:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-06 20:56:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2021-12-06 20:56:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2021-12-06 20:56:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2021-12-06 20:56:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2021-12-06 20:56:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 20:56:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 20:56:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-06 20:56:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-06 20:56:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2021-12-06 20:56:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2021-12-06 20:56:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-06 20:56:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-06 20:56:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2021-12-06 20:56:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2021-12-06 20:56:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:56:50,693 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-06 20:56:50,693 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-06 20:56:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 20:56:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-06 20:56:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-06 20:56:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:56:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:56:50,694 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 20:56:50,694 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 20:56:51,073 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:56:51,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:56:51,219 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 20:57:05,812 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:57:05,829 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:57:05,829 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 20:57:05,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:57:05 BoogieIcfgContainer [2021-12-06 20:57:05,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:57:05,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:57:05,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:57:05,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:57:05,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:56:49" (1/3) ... [2021-12-06 20:57:05,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f7b40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:57:05, skipping insertion in model container [2021-12-06 20:57:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:56:50" (2/3) ... [2021-12-06 20:57:05,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f7b40d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:57:05, skipping insertion in model container [2021-12-06 20:57:05,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:57:05" (3/3) ... [2021-12-06 20:57:05,840 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-06 20:57:05,846 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:57:05,846 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:57:05,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:57:05,898 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 20:57:05,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:57:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 1227 states, 835 states have (on average 1.362874251497006) internal successors, (1138), 878 states have internal predecessors, (1138), 323 states have call successors, (323), 68 states have call predecessors, (323), 67 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) [2021-12-06 20:57:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-06 20:57:05,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:05,964 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:05,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:05,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2026460203, now seen corresponding path program 1 times [2021-12-06 20:57:05,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:05,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458990610] [2021-12-06 20:57:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:05,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:57:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:57:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:57:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:57:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:57:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:57:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:57:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:57:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 20:57:06,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 20:57:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:57:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 20:57:06,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-06 20:57:06,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:06,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458990610] [2021-12-06 20:57:06,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458990610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:06,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:06,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:57:06,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468386119] [2021-12-06 20:57:06,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:06,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:57:06,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:06,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:57:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:57:06,789 INFO L87 Difference]: Start difference. First operand has 1227 states, 835 states have (on average 1.362874251497006) internal successors, (1138), 878 states have internal predecessors, (1138), 323 states have call successors, (323), 68 states have call predecessors, (323), 67 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:57:08,832 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 20:57:10,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:57:15,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:15,171 INFO L93 Difference]: Finished difference Result 2859 states and 4316 transitions. [2021-12-06 20:57:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:57:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 171 [2021-12-06 20:57:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:15,201 INFO L225 Difference]: With dead ends: 2859 [2021-12-06 20:57:15,201 INFO L226 Difference]: Without dead ends: 1625 [2021-12-06 20:57:15,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:57:15,213 INFO L933 BasicCegarLoop]: 1641 mSDtfsCounter, 1892 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 1911 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1911 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:15,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1971 Valid, 3134 Invalid, 2981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1911 Valid, 1068 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-12-06 20:57:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-12-06 20:57:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1215. [2021-12-06 20:57:15,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 830 states have (on average 1.355421686746988) internal successors, (1125), 866 states have internal predecessors, (1125), 318 states have call successors, (318), 67 states have call predecessors, (318), 66 states have return successors, (305), 302 states have call predecessors, (305), 305 states have call successors, (305) [2021-12-06 20:57:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1748 transitions. [2021-12-06 20:57:15,335 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1748 transitions. Word has length 171 [2021-12-06 20:57:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:15,335 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1748 transitions. [2021-12-06 20:57:15,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:57:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1748 transitions. [2021-12-06 20:57:15,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-06 20:57:15,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:15,340 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:15,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:57:15,341 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:15,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:15,341 INFO L85 PathProgramCache]: Analyzing trace with hash -491852215, now seen corresponding path program 1 times [2021-12-06 20:57:15,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:15,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998841352] [2021-12-06 20:57:15,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:15,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:57:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:57:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:57:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:57:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:57:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:57:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:57:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:57:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 20:57:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 20:57:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:57:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 20:57:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-06 20:57:15,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:15,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998841352] [2021-12-06 20:57:15,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998841352] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:15,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:15,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:57:15,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886503521] [2021-12-06 20:57:15,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:15,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:57:15,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:15,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:57:15,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:57:15,867 INFO L87 Difference]: Start difference. First operand 1215 states and 1748 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 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 20:57:17,905 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 20:57:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:25,799 INFO L93 Difference]: Finished difference Result 3188 states and 4819 transitions. [2021-12-06 20:57:25,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:57:25,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 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 171 [2021-12-06 20:57:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:25,825 INFO L225 Difference]: With dead ends: 3188 [2021-12-06 20:57:25,825 INFO L226 Difference]: Without dead ends: 3164 [2021-12-06 20:57:25,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:57:25,829 INFO L933 BasicCegarLoop]: 1805 mSDtfsCounter, 4810 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 3253 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5098 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3253 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:25,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5098 Valid, 4617 Invalid, 5631 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3253 Valid, 2377 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2021-12-06 20:57:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-12-06 20:57:25,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2343. [2021-12-06 20:57:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 1610 states have (on average 1.3571428571428572) internal successors, (2185), 1671 states have internal predecessors, (2185), 604 states have call successors, (604), 130 states have call predecessors, (604), 128 states have return successors, (592), 583 states have call predecessors, (592), 592 states have call successors, (592) [2021-12-06 20:57:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3381 transitions. [2021-12-06 20:57:25,967 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3381 transitions. Word has length 171 [2021-12-06 20:57:25,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:25,968 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 3381 transitions. [2021-12-06 20:57:25,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 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 20:57:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3381 transitions. [2021-12-06 20:57:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-06 20:57:25,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:25,971 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:25,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:57:25,971 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1931608669, now seen corresponding path program 1 times [2021-12-06 20:57:25,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:25,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507265124] [2021-12-06 20:57:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:25,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:57:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:57:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:57:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:57:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:57:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:57:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:57:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:57:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 20:57:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 20:57:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:57:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 20:57:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-06 20:57:26,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:26,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507265124] [2021-12-06 20:57:26,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507265124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:26,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:26,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:57:26,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960474442] [2021-12-06 20:57:26,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:26,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:57:26,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:57:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:57:26,464 INFO L87 Difference]: Start difference. First operand 2343 states and 3381 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (16), 6 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 20:57:28,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:57:30,536 WARN L534 Checker$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 20:57:32,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:57:34,643 WARN L534 Checker$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 20:57:47,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:57:47,066 INFO L93 Difference]: Finished difference Result 8568 states and 12822 transitions. [2021-12-06 20:57:47,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:57:47,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (16), 6 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 172 [2021-12-06 20:57:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:57:47,107 INFO L225 Difference]: With dead ends: 8568 [2021-12-06 20:57:47,107 INFO L226 Difference]: Without dead ends: 6255 [2021-12-06 20:57:47,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:57:47,118 INFO L933 BasicCegarLoop]: 1937 mSDtfsCounter, 3919 mSDsluCounter, 4450 mSDsCounter, 0 mSdLazyCounter, 4071 mSolverCounterSat, 2219 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4205 SdHoareTripleChecker+Valid, 6387 SdHoareTripleChecker+Invalid, 6294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2219 IncrementalHoareTripleChecker+Valid, 4071 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:57:47,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4205 Valid, 6387 Invalid, 6294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2219 Valid, 4071 Invalid, 4 Unknown, 0 Unchecked, 20.1s Time] [2021-12-06 20:57:47,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2021-12-06 20:57:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 4616. [2021-12-06 20:57:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 3183 states have (on average 1.3594093622368835) internal successors, (4327), 3296 states have internal predecessors, (4327), 1180 states have call successors, (1180), 256 states have call predecessors, (1180), 252 states have return successors, (1162), 1147 states have call predecessors, (1162), 1162 states have call successors, (1162) [2021-12-06 20:57:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6669 transitions. [2021-12-06 20:57:47,310 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6669 transitions. Word has length 172 [2021-12-06 20:57:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:57:47,311 INFO L470 AbstractCegarLoop]: Abstraction has 4616 states and 6669 transitions. [2021-12-06 20:57:47,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (16), 6 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 20:57:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6669 transitions. [2021-12-06 20:57:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-06 20:57:47,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:57:47,314 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:47,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:57:47,314 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:57:47,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:57:47,314 INFO L85 PathProgramCache]: Analyzing trace with hash 209883035, now seen corresponding path program 1 times [2021-12-06 20:57:47,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:57:47,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378553716] [2021-12-06 20:57:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:57:47,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:57:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:57:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:57:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:57:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:57:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:57:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:57:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:57:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:57:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:57:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 20:57:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 20:57:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:57:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:57:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 20:57:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 20:57:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:57:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-06 20:57:47,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:57:47,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378553716] [2021-12-06 20:57:47,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378553716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:57:47,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:57:47,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:57:47,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811733025] [2021-12-06 20:57:47,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:57:47,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:57:47,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:57:47,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:57:47,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:57:47,705 INFO L87 Difference]: Start difference. First operand 4616 states and 6669 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 20:57:49,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:57:51,833 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:57:53,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:57:55,870 WARN L534 Checker$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 20:58:06,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:58:06,077 INFO L93 Difference]: Finished difference Result 15335 states and 22651 transitions. [2021-12-06 20:58:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:58:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 174 [2021-12-06 20:58:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:58:06,148 INFO L225 Difference]: With dead ends: 15335 [2021-12-06 20:58:06,148 INFO L226 Difference]: Without dead ends: 10749 [2021-12-06 20:58:06,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:58:06,167 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 2988 mSDsluCounter, 3795 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 1871 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3232 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1871 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:58:06,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3232 Valid, 5741 Invalid, 4677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1871 Valid, 2802 Invalid, 4 Unknown, 0 Unchecked, 17.9s Time] [2021-12-06 20:58:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10749 states. [2021-12-06 20:58:06,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10749 to 8938. [2021-12-06 20:58:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8938 states, 6162 states have (on average 1.3620577734501784) internal successors, (8393), 6370 states have internal predecessors, (8393), 2280 states have call successors, (2280), 500 states have call predecessors, (2280), 495 states have return successors, (2262), 2235 states have call predecessors, (2262), 2262 states have call successors, (2262) [2021-12-06 20:58:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 12935 transitions. [2021-12-06 20:58:06,550 INFO L78 Accepts]: Start accepts. Automaton has 8938 states and 12935 transitions. Word has length 174 [2021-12-06 20:58:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:58:06,550 INFO L470 AbstractCegarLoop]: Abstraction has 8938 states and 12935 transitions. [2021-12-06 20:58:06,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 20:58:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 8938 states and 12935 transitions. [2021-12-06 20:58:06,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 20:58:06,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:58:06,554 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:06,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:58:06,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:58:06,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:58:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash 547971873, now seen corresponding path program 1 times [2021-12-06 20:58:06,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:58:06,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895969994] [2021-12-06 20:58:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:58:06,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:58:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:58:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:58:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:58:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:58:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:58:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:58:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:58:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:58:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 20:58:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 20:58:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:58:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:07,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:07,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 20:58:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 20:58:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-06 20:58:07,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:58:07,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895969994] [2021-12-06 20:58:07,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895969994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:58:07,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:58:07,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:58:07,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203265929] [2021-12-06 20:58:07,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:58:07,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:58:07,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:58:07,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:58:07,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:58:07,083 INFO L87 Difference]: Start difference. First operand 8938 states and 12935 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:58:09,116 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:58:11,146 WARN L534 Checker$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 20:58:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:58:20,615 INFO L93 Difference]: Finished difference Result 33252 states and 49860 transitions. [2021-12-06 20:58:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:58:20,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 190 [2021-12-06 20:58:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:58:20,734 INFO L225 Difference]: With dead ends: 33252 [2021-12-06 20:58:20,734 INFO L226 Difference]: Without dead ends: 24341 [2021-12-06 20:58:20,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:58:20,769 INFO L933 BasicCegarLoop]: 1833 mSDtfsCounter, 4815 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 3247 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5103 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 5831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3247 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:58:20,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5103 Valid, 4861 Invalid, 5831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3247 Valid, 2582 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2021-12-06 20:58:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24341 states. [2021-12-06 20:58:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24341 to 17785. [2021-12-06 20:58:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17785 states, 12277 states have (on average 1.3627922130813717) internal successors, (16731), 12681 states have internal predecessors, (16731), 4524 states have call successors, (4524), 991 states have call predecessors, (4524), 983 states have return successors, (4504), 4448 states have call predecessors, (4504), 4504 states have call successors, (4504) [2021-12-06 20:58:21,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17785 states to 17785 states and 25759 transitions. [2021-12-06 20:58:21,484 INFO L78 Accepts]: Start accepts. Automaton has 17785 states and 25759 transitions. Word has length 190 [2021-12-06 20:58:21,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:58:21,484 INFO L470 AbstractCegarLoop]: Abstraction has 17785 states and 25759 transitions. [2021-12-06 20:58:21,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:58:21,485 INFO L276 IsEmpty]: Start isEmpty. Operand 17785 states and 25759 transitions. [2021-12-06 20:58:21,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-06 20:58:21,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:58:21,489 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:21,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:58:21,489 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:58:21,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:58:21,489 INFO L85 PathProgramCache]: Analyzing trace with hash 257665740, now seen corresponding path program 1 times [2021-12-06 20:58:21,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:58:21,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19258517] [2021-12-06 20:58:21,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:58:21,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:58:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:58:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:58:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:58:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:58:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:58:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:58:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:58:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:58:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 20:58:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 20:58:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:58:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 20:58:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 20:58:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,199 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-12-06 20:58:22,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:58:22,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19258517] [2021-12-06 20:58:22,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19258517] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:58:22,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401824785] [2021-12-06 20:58:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:58:22,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:58:22,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:58:22,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:58:22,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:58:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:22,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 20:58:22,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:58:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-12-06 20:58:23,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:58:23,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401824785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:58:23,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:58:23,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-12-06 20:58:23,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324658610] [2021-12-06 20:58:23,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:58:23,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:58:23,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:58:23,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:58:23,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:58:23,340 INFO L87 Difference]: Start difference. First operand 17785 states and 25759 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 20:58:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:58:24,067 INFO L93 Difference]: Finished difference Result 35605 states and 51567 transitions. [2021-12-06 20:58:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:58:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 192 [2021-12-06 20:58:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:58:24,158 INFO L225 Difference]: With dead ends: 35605 [2021-12-06 20:58:24,158 INFO L226 Difference]: Without dead ends: 17833 [2021-12-06 20:58:24,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:58:24,222 INFO L933 BasicCegarLoop]: 1728 mSDtfsCounter, 6 mSDsluCounter, 6895 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8623 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:58:24,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 8623 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:58:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17833 states. [2021-12-06 20:58:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17833 to 17788. [2021-12-06 20:58:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17788 states, 12279 states have (on average 1.3628145614463718) internal successors, (16734), 12684 states have internal predecessors, (16734), 4524 states have call successors, (4524), 991 states have call predecessors, (4524), 984 states have return successors, (4505), 4448 states have call predecessors, (4505), 4504 states have call successors, (4505) [2021-12-06 20:58:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17788 states to 17788 states and 25763 transitions. [2021-12-06 20:58:24,875 INFO L78 Accepts]: Start accepts. Automaton has 17788 states and 25763 transitions. Word has length 192 [2021-12-06 20:58:24,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:58:24,876 INFO L470 AbstractCegarLoop]: Abstraction has 17788 states and 25763 transitions. [2021-12-06 20:58:24,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 20:58:24,876 INFO L276 IsEmpty]: Start isEmpty. Operand 17788 states and 25763 transitions. [2021-12-06 20:58:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-06 20:58:24,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:58:24,880 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:24,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:58:25,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:58:25,081 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:58:25,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:58:25,081 INFO L85 PathProgramCache]: Analyzing trace with hash 724073131, now seen corresponding path program 1 times [2021-12-06 20:58:25,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:58:25,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039923083] [2021-12-06 20:58:25,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:58:25,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:58:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:58:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:58:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:58:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:58:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:58:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:58:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:58:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 20:58:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 20:58:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 20:58:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 20:58:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 20:58:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 20:58:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-12-06 20:58:25,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:58:25,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039923083] [2021-12-06 20:58:25,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039923083] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:58:25,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789002565] [2021-12-06 20:58:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:58:25,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:58:25,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:58:25,805 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:58:25,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:58:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:29,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 20:58:29,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:58:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-12-06 20:58:29,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:58:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-12-06 20:58:30,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789002565] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:58:30,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:58:30,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-12-06 20:58:30,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646855730] [2021-12-06 20:58:30,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:58:30,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 20:58:30,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:58:30,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 20:58:30,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:58:30,444 INFO L87 Difference]: Start difference. First operand 17788 states and 25763 transitions. Second operand has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-06 20:58:32,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:58:34,502 WARN L534 Checker$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 20:58:36,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:58:51,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:58:51,858 INFO L93 Difference]: Finished difference Result 42125 states and 62977 transitions. [2021-12-06 20:58:51,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:58:51,859 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 197 [2021-12-06 20:58:51,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:58:51,944 INFO L225 Difference]: With dead ends: 42125 [2021-12-06 20:58:51,944 INFO L226 Difference]: Without dead ends: 24318 [2021-12-06 20:58:51,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:58:51,984 INFO L933 BasicCegarLoop]: 1604 mSDtfsCounter, 1230 mSDsluCounter, 8827 mSDsCounter, 0 mSdLazyCounter, 4267 mSolverCounterSat, 1030 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 10431 SdHoareTripleChecker+Invalid, 5300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1030 IncrementalHoareTripleChecker+Valid, 4267 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:58:51,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1309 Valid, 10431 Invalid, 5300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1030 Valid, 4267 Invalid, 3 Unknown, 0 Unchecked, 19.9s Time] [2021-12-06 20:58:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24318 states. [2021-12-06 20:58:52,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24318 to 17824. [2021-12-06 20:58:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17824 states, 12313 states have (on average 1.3630309429058718) internal successors, (16783), 12718 states have internal predecessors, (16783), 4525 states have call successors, (4525), 992 states have call predecessors, (4525), 985 states have return successors, (4506), 4449 states have call predecessors, (4506), 4505 states have call successors, (4506) [2021-12-06 20:58:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17824 states to 17824 states and 25814 transitions. [2021-12-06 20:58:52,723 INFO L78 Accepts]: Start accepts. Automaton has 17824 states and 25814 transitions. Word has length 197 [2021-12-06 20:58:52,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:58:52,724 INFO L470 AbstractCegarLoop]: Abstraction has 17824 states and 25814 transitions. [2021-12-06 20:58:52,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.6) internal successors, (99), 13 states have internal predecessors, (99), 4 states have call successors, (43), 6 states have call predecessors, (43), 6 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2021-12-06 20:58:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 17824 states and 25814 transitions. [2021-12-06 20:58:52,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-06 20:58:52,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:58:52,729 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:52,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:58:52,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:58:52,930 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:58:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:58:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash 218100524, now seen corresponding path program 2 times [2021-12-06 20:58:52,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:58:52,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412030595] [2021-12-06 20:58:52,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:58:52,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:58:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:58:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:58:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:58:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:58:53,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:58:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:58:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:58:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:58:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:58:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 20:58:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 20:58:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 20:58:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 20:58:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 20:58:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:58:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:58:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-12-06 20:58:53,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:58:53,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412030595] [2021-12-06 20:58:53,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412030595] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:58:53,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406564094] [2021-12-06 20:58:53,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:58:53,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:58:53,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:58:53,682 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:58:53,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:58:56,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 20:58:56,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:58:56,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2272 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-06 20:58:56,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:58:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2021-12-06 20:58:58,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:58:58,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406564094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:58:58,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:58:58,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2021-12-06 20:58:58,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922095889] [2021-12-06 20:58:58,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:58:58,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:58:58,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:58:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:58:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2021-12-06 20:58:58,333 INFO L87 Difference]: Start difference. First operand 17824 states and 25814 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 20:59:00,386 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:59:02,418 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 20:59:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:11,681 INFO L93 Difference]: Finished difference Result 51786 states and 75572 transitions. [2021-12-06 20:59:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 20:59:11,682 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 202 [2021-12-06 20:59:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:11,834 INFO L225 Difference]: With dead ends: 51786 [2021-12-06 20:59:11,834 INFO L226 Difference]: Without dead ends: 33997 [2021-12-06 20:59:11,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=103, Invalid=889, Unknown=0, NotChecked=0, Total=992 [2021-12-06 20:59:11,871 INFO L933 BasicCegarLoop]: 3210 mSDtfsCounter, 2506 mSDsluCounter, 28568 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 285 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2579 SdHoareTripleChecker+Valid, 31778 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:11,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2579 Valid, 31778 Invalid, 3134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [285 Valid, 2847 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2021-12-06 20:59:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33997 states. [2021-12-06 20:59:12,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33997 to 30976. [2021-12-06 20:59:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30976 states, 21391 states have (on average 1.3639381048104342) internal successors, (29176), 22103 states have internal predecessors, (29176), 7865 states have call successors, (7865), 1714 states have call predecessors, (7865), 1719 states have return successors, (7888), 7746 states have call predecessors, (7888), 7845 states have call successors, (7888) [2021-12-06 20:59:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30976 states to 30976 states and 44929 transitions. [2021-12-06 20:59:12,928 INFO L78 Accepts]: Start accepts. Automaton has 30976 states and 44929 transitions. Word has length 202 [2021-12-06 20:59:12,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:12,929 INFO L470 AbstractCegarLoop]: Abstraction has 30976 states and 44929 transitions. [2021-12-06 20:59:12,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 20:59:12,929 INFO L276 IsEmpty]: Start isEmpty. Operand 30976 states and 44929 transitions. [2021-12-06 20:59:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-06 20:59:12,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:12,933 INFO L514 BasicCegarLoop]: trace histogram [10, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-06 20:59:12,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 20:59:13,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 20:59:13,134 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:13,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:13,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1447437160, now seen corresponding path program 1 times [2021-12-06 20:59:13,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:13,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100046352] [2021-12-06 20:59:13,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:13,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:59:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:59:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:59:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:59:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:59:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:59:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:59:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:59:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 20:59:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 20:59:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 20:59:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 20:59:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:59:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:59:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:59:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 20:59:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-12-06 20:59:13,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:13,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100046352] [2021-12-06 20:59:13,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100046352] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:13,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607999860] [2021-12-06 20:59:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:13,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:13,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:13,989 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:13,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:59:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:28,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 3095 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:59:28,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:59:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 116 proven. 3 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-06 20:59:29,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:59:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-12-06 20:59:30,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607999860] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:59:30,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:59:30,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2021-12-06 20:59:30,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178586860] [2021-12-06 20:59:30,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:59:30,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 20:59:30,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:59:30,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 20:59:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-12-06 20:59:30,446 INFO L87 Difference]: Start difference. First operand 30976 states and 44929 transitions. Second operand has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-06 20:59:32,472 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 20:59:34,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:59:36,541 WARN L534 Checker$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 20:59:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:59:52,942 INFO L93 Difference]: Finished difference Result 73364 states and 109374 transitions. [2021-12-06 20:59:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:59:52,943 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 223 [2021-12-06 20:59:52,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:59:53,094 INFO L225 Difference]: With dead ends: 73364 [2021-12-06 20:59:53,094 INFO L226 Difference]: Without dead ends: 42398 [2021-12-06 20:59:53,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 501 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2021-12-06 20:59:53,179 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 1492 mSDsluCounter, 10130 mSDsCounter, 0 mSdLazyCounter, 4795 mSolverCounterSat, 1403 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 11736 SdHoareTripleChecker+Invalid, 6201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 4795 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:59:53,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 11736 Invalid, 6201 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1403 Valid, 4795 Invalid, 3 Unknown, 0 Unchecked, 20.4s Time] [2021-12-06 20:59:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42398 states. [2021-12-06 20:59:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42398 to 30977. [2021-12-06 20:59:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30977 states, 21392 states have (on average 1.3639678384442782) internal successors, (29178), 22104 states have internal predecessors, (29178), 7865 states have call successors, (7865), 1714 states have call predecessors, (7865), 1719 states have return successors, (7888), 7746 states have call predecessors, (7888), 7845 states have call successors, (7888) [2021-12-06 20:59:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30977 states to 30977 states and 44931 transitions. [2021-12-06 20:59:54,432 INFO L78 Accepts]: Start accepts. Automaton has 30977 states and 44931 transitions. Word has length 223 [2021-12-06 20:59:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:59:54,432 INFO L470 AbstractCegarLoop]: Abstraction has 30977 states and 44931 transitions. [2021-12-06 20:59:54,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.055555555555555) internal successors, (109), 16 states have internal predecessors, (109), 4 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-12-06 20:59:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand 30977 states and 44931 transitions. [2021-12-06 20:59:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-06 20:59:54,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:59:54,436 INFO L514 BasicCegarLoop]: trace histogram [15, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-06 20:59:54,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:59:54,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:54,638 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:59:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:59:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash 608309673, now seen corresponding path program 2 times [2021-12-06 20:59:54,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:59:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976739653] [2021-12-06 20:59:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:59:54,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:59:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:59:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:59:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:59:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:59:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:59:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:59:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:59:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:59:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:59:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 20:59:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 20:59:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 20:59:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 20:59:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:59:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:59:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:59:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 20:59:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:59:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:59:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2021-12-06 20:59:55,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:59:55,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976739653] [2021-12-06 20:59:55,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976739653] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:59:55,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554033184] [2021-12-06 20:59:55,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:59:55,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:59:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:59:55,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:59:55,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 21:04:41,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 21:04:41,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 21:04:41,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2154 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-06 21:04:41,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:04:42,826 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2021-12-06 21:04:42,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 21:04:42,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554033184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:04:42,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 21:04:42,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2021-12-06 21:04:42,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591470727] [2021-12-06 21:04:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:04:42,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 21:04:42,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:04:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 21:04:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-12-06 21:04:42,829 INFO L87 Difference]: Start difference. First operand 30977 states and 44931 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 21:04:44,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:46,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:49,001 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:04:51,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:05:02,446 INFO L93 Difference]: Finished difference Result 78189 states and 113962 transitions. [2021-12-06 21:05:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 21:05:02,448 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 228 [2021-12-06 21:05:02,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:05:02,600 INFO L225 Difference]: With dead ends: 78189 [2021-12-06 21:05:02,600 INFO L226 Difference]: Without dead ends: 47247 [2021-12-06 21:05:02,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2021-12-06 21:05:02,663 INFO L933 BasicCegarLoop]: 2287 mSDtfsCounter, 2646 mSDsluCounter, 17371 mSDsCounter, 0 mSdLazyCounter, 3137 mSolverCounterSat, 233 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 19658 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 3137 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2021-12-06 21:05:02,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2716 Valid, 19658 Invalid, 3374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [233 Valid, 3137 Invalid, 4 Unknown, 0 Unchecked, 17.2s Time] [2021-12-06 21:05:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47247 states. [2021-12-06 21:05:03,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47247 to 36515. [2021-12-06 21:05:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36515 states, 25216 states have (on average 1.3638959390862944) internal successors, (34392), 26057 states have internal predecessors, (34392), 9270 states have call successors, (9270), 2023 states have call predecessors, (9270), 2028 states have return successors, (9299), 9127 states have call predecessors, (9299), 9250 states have call successors, (9299) [2021-12-06 21:05:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36515 states to 36515 states and 52961 transitions. [2021-12-06 21:05:04,110 INFO L78 Accepts]: Start accepts. Automaton has 36515 states and 52961 transitions. Word has length 228 [2021-12-06 21:05:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:05:04,110 INFO L470 AbstractCegarLoop]: Abstraction has 36515 states and 52961 transitions. [2021-12-06 21:05:04,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 21:05:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 36515 states and 52961 transitions. [2021-12-06 21:05:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-06 21:05:04,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:05:04,114 INFO L514 BasicCegarLoop]: trace histogram [15, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:04,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 21:05:04,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 21:05:04,315 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:05:04,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:04,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1186962255, now seen corresponding path program 1 times [2021-12-06 21:05:04,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:04,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312621827] [2021-12-06 21:05:04,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:04,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:05:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:05:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 21:05:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 21:05:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:05:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:05:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:05:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:05:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 21:05:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 21:05:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 21:05:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 21:05:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 21:05:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 21:05:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 21:05:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2021-12-06 21:05:04,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:04,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312621827] [2021-12-06 21:05:04,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312621827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 21:05:04,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 21:05:04,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 21:05:04,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740468977] [2021-12-06 21:05:04,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 21:05:04,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 21:05:04,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:05:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 21:05:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 21:05:04,757 INFO L87 Difference]: Start difference. First operand 36515 states and 52961 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 21:05:06,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:08,796 WARN L534 Checker$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 21:05:20,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:05:20,597 INFO L93 Difference]: Finished difference Result 86368 states and 128737 transitions. [2021-12-06 21:05:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 21:05:20,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 226 [2021-12-06 21:05:20,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:05:20,788 INFO L225 Difference]: With dead ends: 86368 [2021-12-06 21:05:20,788 INFO L226 Difference]: Without dead ends: 49888 [2021-12-06 21:05:20,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 21:05:20,864 INFO L933 BasicCegarLoop]: 3062 mSDtfsCounter, 3297 mSDsluCounter, 4213 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 2188 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3584 SdHoareTripleChecker+Valid, 7275 SdHoareTripleChecker+Invalid, 4958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2188 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-12-06 21:05:20,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3584 Valid, 7275 Invalid, 4958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2188 Valid, 2768 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2021-12-06 21:05:20,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49888 states. [2021-12-06 21:05:22,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49888 to 36496. [2021-12-06 21:05:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36496 states, 25197 states have (on average 1.363455966980196) internal successors, (34355), 26040 states have internal predecessors, (34355), 9270 states have call successors, (9270), 2023 states have call predecessors, (9270), 2028 states have return successors, (9299), 9125 states have call predecessors, (9299), 9250 states have call successors, (9299) [2021-12-06 21:05:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36496 states to 36496 states and 52924 transitions. [2021-12-06 21:05:22,451 INFO L78 Accepts]: Start accepts. Automaton has 36496 states and 52924 transitions. Word has length 226 [2021-12-06 21:05:22,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:05:22,451 INFO L470 AbstractCegarLoop]: Abstraction has 36496 states and 52924 transitions. [2021-12-06 21:05:22,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (22), 7 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 21:05:22,452 INFO L276 IsEmpty]: Start isEmpty. Operand 36496 states and 52924 transitions. [2021-12-06 21:05:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-06 21:05:22,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:05:22,458 INFO L514 BasicCegarLoop]: trace histogram [15, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:05:22,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 21:05:22,458 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:05:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:05:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 983234697, now seen corresponding path program 1 times [2021-12-06 21:05:22,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:05:22,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454364764] [2021-12-06 21:05:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:22,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:05:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:05:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:05:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 21:05:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 21:05:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:05:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:05:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:05:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:05:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:22,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 21:05:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 21:05:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 21:05:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 21:05:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 21:05:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:05:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 21:05:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:05:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-06 21:05:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 21:05:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:05:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-06 21:05:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2021-12-06 21:05:23,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:05:23,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454364764] [2021-12-06 21:05:23,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454364764] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:05:23,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715285153] [2021-12-06 21:05:23,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:05:23,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:05:23,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:05:23,258 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:05:23,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 21:05:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:05:29,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 21:05:29,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 21:05:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 144 proven. 6 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2021-12-06 21:05:30,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 21:05:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2021-12-06 21:05:31,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715285153] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 21:05:31,486 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 21:05:31,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 23 [2021-12-06 21:05:31,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001514909] [2021-12-06 21:05:31,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 21:05:31,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 21:05:31,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 21:05:31,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 21:05:31,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-12-06 21:05:31,487 INFO L87 Difference]: Start difference. First operand 36496 states and 52924 transitions. Second operand has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 19 states have internal predecessors, (130), 4 states have call successors, (56), 6 states have call predecessors, (56), 6 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-12-06 21:05:33,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:05:35,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 21:06:02,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 21:06:02,208 INFO L93 Difference]: Finished difference Result 86543 states and 129511 transitions. [2021-12-06 21:06:02,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 21:06:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 19 states have internal predecessors, (130), 4 states have call successors, (56), 6 states have call predecessors, (56), 6 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 244 [2021-12-06 21:06:02,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 21:06:02,396 INFO L225 Difference]: With dead ends: 86543 [2021-12-06 21:06:02,396 INFO L226 Difference]: Without dead ends: 49991 [2021-12-06 21:06:02,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 547 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=202, Invalid=1204, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 21:06:02,479 INFO L933 BasicCegarLoop]: 1605 mSDtfsCounter, 1903 mSDsluCounter, 17471 mSDsCounter, 0 mSdLazyCounter, 7366 mSolverCounterSat, 1902 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 19076 SdHoareTripleChecker+Invalid, 9270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1902 IncrementalHoareTripleChecker+Valid, 7366 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2021-12-06 21:06:02,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 19076 Invalid, 9270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1902 Valid, 7366 Invalid, 2 Unknown, 0 Unchecked, 27.1s Time] [2021-12-06 21:06:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49991 states. [2021-12-06 21:06:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49991 to 36561. [2021-12-06 21:06:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36561 states, 25262 states have (on average 1.3637875069274008) internal successors, (34452), 26105 states have internal predecessors, (34452), 9270 states have call successors, (9270), 2023 states have call predecessors, (9270), 2028 states have return successors, (9299), 9125 states have call predecessors, (9299), 9250 states have call successors, (9299) [2021-12-06 21:06:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36561 states to 36561 states and 53021 transitions. [2021-12-06 21:06:04,080 INFO L78 Accepts]: Start accepts. Automaton has 36561 states and 53021 transitions. Word has length 244 [2021-12-06 21:06:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 21:06:04,081 INFO L470 AbstractCegarLoop]: Abstraction has 36561 states and 53021 transitions. [2021-12-06 21:06:04,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 6.190476190476191) internal successors, (130), 19 states have internal predecessors, (130), 4 states have call successors, (56), 6 states have call predecessors, (56), 6 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-12-06 21:06:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 36561 states and 53021 transitions. [2021-12-06 21:06:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-12-06 21:06:04,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 21:06:04,086 INFO L514 BasicCegarLoop]: trace histogram [20, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 21:06:04,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 21:06:04,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 21:06:04,288 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 21:06:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 21:06:04,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1762252776, now seen corresponding path program 2 times [2021-12-06 21:06:04,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 21:06:04,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040080709] [2021-12-06 21:06:04,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 21:06:04,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 21:06:04,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:06:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:06:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 21:06:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:06:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 21:06:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:06:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 21:06:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:06:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 21:06:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:06:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 21:06:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:04,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 21:06:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 21:06:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 21:06:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 21:06:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 21:06:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 21:06:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 21:06:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 21:06:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 21:06:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 21:06:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 21:06:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-06 21:06:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 21:06:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 21:06:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 21:06:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-12-06 21:06:05,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 21:06:05,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040080709] [2021-12-06 21:06:05,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040080709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 21:06:05,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830062164] [2021-12-06 21:06:05,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 21:06:05,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 21:06:05,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 21:06:05,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 21:06:05,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ddbe211-7cc4-4455-abd2-7a5391034be0/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process